Hey Tom, I'm about to do all that as I changed valve cover gasket and still no spark. As I was changing it smelt the petrol in the cylinders which indicates my pump is working so r my injectors... I'm now more focused on the ECU as I know the ignition cable get the signal from it and I replaced the sensor and no change... Thanks for the help m8 I really appreciate it! I wouldn't manage that sensor without ur video :)
+Ivaylo Vasilev Yeah, if you smell fuel, then the crank sensor is ok (should be)... if you are not getting enough fuel, you can smell fuel, but it's not enough to run the engine. The timing belt could have stripped teeth.... it can still move / rotate the engine, but timing could be off due to the stripped teeth. Check fuel pressure, and the cam/ crank TDC marks.
I had to cut mine out as well, I just did this in my car, but the zipties on like 3 cords together including the one for this sensor, I was worried if I tried to cut the zipties i could damage the others, so I cut the old sensor out, new one is much shorter and better though
Hi Tom, I managed to replace the sensor, but still I get crank no start. So then I had a closer look at my spark plugs and they had oil on as well as the ignition coils.. I don't know if it's enough to prevent spark, but I'm changing rocker cover gasket all together. EPC light still ON. What worries me if it's not the sensor and the light is still on, I don't know what it could be. I have engine light on as well.
Scan for fault codes...oil in the spark plug wells can be an issue but you should have at least one plug that fires. they don't all stop at the same time unless there's an electrical issue. how did you check for spark & spark control from the ecm? is the timing belt OK? is the fuel pump running? the pump fuse? the ignition coil fuse?
Nice work Thomas. What were the symptoms for this crank sensor replacement?And I must say, that you've got a lot of patience to work on these cars as crapped as they are. Take care....
Customer complained about long crank time when hot... I was able to recreate the symptom on the hoist (had no rpm signal when viewed with VCDS). Original sensor, so I did not bother scoping... although, I also checked fuel pump current ramp just in case, it was a bit bumpy but still ok. I figured I post this video so people can see that the sensor can be replaced from the top (as one of my viewers pointed out to me).
***** Did the same with the wife's 1.8 it had a RPM sensor code and hard start, caught it with no RPM and just put a new sensor in it, as you,I did not bother to scope it as it was OE and original.
It cranks all the way, no start.EPC light ON. My spark plugs are fine, Diagnostics confirmed my suspicion of the sensor....hopefully it will fix the problem, as u know it could even be bad wiring or ECU. I'll let u know of my progress tomorrow, I have also an electrical problem, as I switch off my car....the fan comes on by itself and eats by battery. And it does that on it's own demand, it could happen 5 minutes after I turn it off or an hour. Do u think it could be a bad ECM relay?
Hi Thomas, I find this video very informative thank you for posting. Attempting this exact procedure tomorrow on my 2001 1.8t A4. Located the sensor, must say it's one hell of awkward place they stick it... Just wanted to ask, the 10 mm bolt that holds it is that a normal 10mm socket I need to use to take it out? Thanks in advance.
Can you help me with wiring on relays underneath my ecu as I need to know what color wires go into the black and the brown relay holder ... a4 b6 1.8t manual .. the 219 goes into one and a 4 prong into another .
Are the wires not in the connector? Are you splicing wires / repairing damage? All you need is a wiring diagram... that will show you what you need to know.
@@EXOVCDS nope Completely my bad as half were so corroded then fell out and the others I pulled out but had them zip tied but also were toast so cut em back and after flipping ecu over few times that was that.. Never thought putting back like 6 wires would be such a pain..
What blows my mind is all These people are dealing with issues with no power to ecu .. crank semsor . ect ect .. knowing the relay carrier has been compromised with water and replace relays and dont even clean and check the backside of the relay or least from what ive seen (trust me ive paused and zoomed ) Maybe if easier Can send quick picture or two .. 5309416767 or jeremyremington78@gmail.com ..
@@jeremyremington8897 I had to deal with wet relays not too long ago. fkh161.ca/Audi/ComponentPowerRelay.jpg I'll send you a wiring diagram in an email shortly. You can edit your last reply and delete the phone number & email address.
Hello I have 2002 Audi 1.8T Quattro - with Check Engine Light ON, Scan shows a P0716 and Sometimes PRNDS "All ON" - I need to change the same sensor that is on your Video...??? - On some forum i find that low transmission oil level can cause the same Codes? - Also what is a part number for that? - Please Help --- Donation DONE ;-)
MrTotalZone This video is about the "engine speed sensor" (crankshaft position sensor). P0716 is the transmission input speed sensor... not the same part.
MrTotalZone You / we don't know if it is a sensor problem... could be a wiring or bad connection issue. Could also be low on transmission fluid. Send me an email and I will send you some info. fkh161@fkh161.ca
I have been having problems with 1.8t not starting when really hot was it the same problem with this one? Mine does turn over and I give it a couple seconds an then it starts just fine and it wont do it until the nect day
I have the code p0717 and p0722 turbine speed sensor, and something with shaft do you know wat it could, gear to shift, so tranny wont run at all can you help me?
+Thomas EXOVCDS Thx for such a fast response! it starts fine. I do recall (twice) it shutting down after initial start, but second start was fine. right now i have no warning codes, and twice now has it just shut down, while coasting both times.
My car hasn't been starting easy when it's cold and/or when it sits too long, if it's just been a couple hours, it will start right up but in the morning is when I have the most trouble, especially now that it's getting colder out. I make sure to go out and start my car on lunch breaks. Well I got around to checking codes, p0116, p0321 (speed ignition input/crank sensor whatever it's called lol) and P0420 which is catalytic converter don't know why but that's the easy one to remember, is it coincidence that it has to do with exhaust? Which I think P0420 can be set off from running too lean or rich and giving giving bad emmissions and in return setting off the p0420 catalytic converter picking up those bad emissions, then again that could be a host of many other problems all on it's own. But I started from the basic and cheapest with changing those 2 sensors the one on this video (crankshaft position/ignition speed input) sensor, and the coolant temp sensor, located by the firewall behind the engine with the c-clamp and 4-pins. I hope it's not the one underneath by the radiator fan, can't get much info on that coolant temp sensor and if that one would have a different code thank P0116 or not. Well i'm letting my car sit overnight and not touching it until morning to see if it still has trouble starting or not. I also have an engine ticking noise, almost makes it sounds like a diesel engine but not quite as loud. It only does it when the engine is hot (a few minutes after needle hits normal operating temperature) and low RPM or idle. It doesn't do it when my engine is cold. Or when I give it high RPMs. The noise ticks steady with the engine, until I get to a higher RPM and it goes away until i let off the gas and the RPMs drop again. I was leaning towards timing chain tensionor, but told also could be sticky lifters, or even a spark plug, even though I don't think I'm misfiring when my engine is hot. It's weird my car has one problem when engine is cold, another when its hot
A4 1.t Quattro 2001 B6 I was thinking a coolant sensor or a relay, just not very clued up on electrical, back in the day our cars were only mechanical...there was no computer boxes or any of that sensor staff :)
***** 2005 VW Passat 1.8t gasoline. error code PO322 I am assuming it is the crankshaft senor. Sometimes it is hard to start up and the EPC light comes on and the car runs a little rough. Still drivable though.
no... don't think so. If no engine running issues, I don't see how the tcm would be affected... unless the crank signal gets corrupted on the way to the tcm. what is the car doing or not doing?
+Thomas EXOVCDS ok buddy recently i had a pal who was getting some tcm issues and after much troubleshooting it ended up being his crank sensor so i was thinking if that could be the issue with my car as well im getting a p1773 hydraulic pressure sensor 1 signal to large and a p1741 clutch adaptation limit reached i changed 2 mechatronics unit and everything else possible concerning the transmission filters seals clutches variator assembly idk wat can be causing it can you assist? Thanks.
+Shimon La Hee' You're asking the wrong guy... I've never pulled a mechatronic or done any CVT or Auto tranny teardown... aside from oil filter change. I would gave to see what the service manual says about those codes and go from there. There are some great TH-cam channels that are transmission based. I'm out for an appointment... but might get a chance to post some links here later tonight.
Hey Thomas I have the AWM 1.8t in a 2001 audi a4. Im changing the crankshaft sensor and it won't come out of the hole that it's in. I wiggled the damn thing for like 2 hours. It spins but will not pull out. Have you ran into this before?
Alex glass Yes... they can get stuck pretty good. Us some type of tool to pry / pop it out. Here's a recent video where I had to pry it out. th-cam.com/video/8WufwHIzaUM/w-d-xo.html
Thomas Nevermind! Haha. I sprayed a lot of penetrating oil on it. Literally as soon as I got done asking you I went back to go pull on it some more and it popped out. Thanks for the videos and the reply, you definitely helped me find it when I first started.
Hey Thomas. What brand name lube did you use for the o ring? Is there a specific lube I need or is it not neccessary? The same thing with the Anti Seize. Do i need that as well? Thanks
I'm having problems with my a4 cab, its an 04 audi A4 cabriolet 1.8T FWD model, the engine turns but doesn't turn on, we changed spark plugs on a engine mechanics suggestions and it seemed to work for 3 days but i just got tow'd home by dad. i was told if the car cranks but doesn't start. and the rpm dial doesn't go past zero then it would be the crank shaft sensor. just wondering if you could give your second opinion on it. the cranking and not turning on has been intermittent and very random for the past 2 weeks, and earlier i was able to turn it on after the cranking issue however it shut off on me and gave me a Red ( normally orange) battery warning light. just wondering if im looking at the right place to solve my problem.
Question. I have an 04 Audi A4 quattro avant and I was planning to replace the cps but noticed that it didn't exist. Just an empty hole and no bolt. I have a 6 speed manual. Am I missing something or was my car made that way?
***** sry. I was looking at the wrong thing. That sensor was extremely hard to see. After some bruised knuckles I was able to get it replaced. It didn't fix my start issue though.. So now onto the cam position sensor.
***** Its a 1.8T engine. no codes yet but sometimes when I go to start the engine it will hesitate to start. I've replaced the coolant temp sensor with a new bosch sensor and now the crank position sensor. Last year I replaced the spark plugs, coil packs, fuel filter and injector seals.
Jay Sheeley Every start-up or only when cold / warm. Could be a faulrt EVAP purge solenoid, fuel pump (fuel draining back), fuel pressure regulator... you need to monitor engine sensors & fuel pressure to find the issue. The ECM data stream can be monitored to find values that are out of place... the trick is finding them when they happen.
Yes, a bad crankshaft position sensor (engine speed sensor) can cause an engine to stall or not start.... but there could be other reasons as well. Year, make, model, engine? Any ECM fault codes?
Is the engine turning over? Are you getting spark? Are you getting fuel? Is fuel in the tank? Did you check for stored fault codes? When was the last time the engine ran?
+love treasurer Could be several things... while you hold the key in the start position, have someone tap on the bottom of the gas tank with an open hand... don't hit the tank too hard, but not to soft. If it doesn't help start the engine... it could still be the pump, but you would have to check further inside the car at the pump connector. Could be a crankshaft position sensor fault, could be a blown fuse, broken timing belt... or something else.
I have a 99 VW Passat 1.8t I just changed the crank case breather hose bc it was broke and spit oil out every where I fixed it but now it won't start it'll crank and crank until a ball of fire come out the intake can you help me
Probably not because of the breather hose... if that were the case, you can disconnect it again and the engine will run. Look for anything that you might have forgotten to reconnect (a big vacuum hose for example).
IV went over everything and IV taken the hose off again it still dose nothing just cranks over until it pops and fire comes out the intake I even tried starting fluid
Hi guys hope someone out their can help me.I had an audi a4 2003 18t B6 .I drive my car from work park and go shopping.When i got back my car won't start.Please help
@@EXOVCDS starter turns engin very well.The first time i try start my car .Engine running but on about 500rpm then engine go off.Do it for few times and after that car won't start at all
@@EXOVCDS Hi good day.You this morning when i go and just check if he will start and on the third try he start and idle smooth.But after a few minutes the idle drop and feel like a jerk
Could be fuel pump problem... maybe something else. You need to check things... tell me what works and what does not. Can you check fuel pressure? Can you check for engine computer fault codes? Do you have scan tool?
Hey Tom,
I'm about to do all that as I changed valve cover gasket and still no spark.
As I was changing it smelt the petrol in the cylinders which indicates my pump is working so r my injectors...
I'm now more focused on the ECU as I know the ignition cable get the signal from it and I replaced the sensor and no change...
Thanks for the help m8 I really appreciate it!
I wouldn't manage that sensor without ur video :)
+Ivaylo Vasilev Yeah, if you smell fuel, then the crank sensor is ok (should be)... if you are not getting enough fuel, you can smell fuel, but it's not enough to run the engine. The timing belt could have stripped teeth.... it can still move / rotate the engine, but timing could be off due to the stripped teeth. Check fuel pressure, and the cam/ crank TDC marks.
I had to cut mine out as well, I just did this in my car, but the zipties on like 3 cords together including the one for this sensor, I was worried if I tried to cut the zipties i could damage the others, so I cut the old sensor out, new one is much shorter and better though
Hi Tom,
I managed to replace the sensor, but still I get crank no start.
So then I had a closer look at my spark plugs and they had oil on as well as the ignition coils..
I don't know if it's enough to prevent spark, but I'm changing rocker cover gasket all together.
EPC light still ON.
What worries me if it's not the sensor and the light is still on, I don't know what it could be.
I have engine light on as well.
Scan for fault codes...oil in the spark plug wells can be an issue but you should have at least one plug that fires. they don't all stop at the same time unless there's an electrical issue. how did you check for spark & spark control from the ecm? is the timing belt OK? is the fuel pump running? the pump fuse? the ignition coil fuse?
Nice work Thomas. What were the symptoms for this crank sensor replacement?And I must say, that you've got a lot of patience to work on these cars as crapped as they are. Take care....
Customer complained about long crank time when hot... I was able to recreate the symptom on the hoist (had no rpm signal when viewed with VCDS). Original sensor, so I did not bother scoping... although, I also checked fuel pump current ramp just in case, it was a bit bumpy but still ok. I figured I post this video so people can see that the sensor can be replaced from the top (as one of my viewers pointed out to me).
***** Thanks for the reply, I appreciate it.
***** Did the same with the wife's 1.8 it had a RPM sensor code and hard start, caught it with no RPM and just put a new sensor in it, as you,I did not bother to scope it as it was OE and original.
It cranks all the way, no start.EPC light ON.
My spark plugs are fine,
Diagnostics confirmed my suspicion of the sensor....hopefully it will fix the problem, as u know it could even be bad wiring or ECU.
I'll let u know of my progress tomorrow,
I have also an electrical problem, as I switch off my car....the fan comes on by itself and eats by battery.
And it does that on it's own demand, it could happen 5 minutes after I turn it off or an hour.
Do u think it could be a bad ECM relay?
+Ivaylo Vasilev Not sure... I can send you a wiring diagram if you need one. 2001 Audi A4, right?
Hi Thomas,
I find this video very informative thank you for posting.
Attempting this exact procedure tomorrow on my 2001 1.8t A4.
Located the sensor, must say it's one hell of awkward place they stick it...
Just wanted to ask, the 10 mm bolt that holds it is that a normal 10mm socket I need to use to take it out?
Thanks in advance.
+Ivaylo Vasilev 10mm is 10mm, use whatever combination of short 10mm or long ./ deep socket 10mm with or without an extension... whatever works.
Can you help me with wiring on relays underneath my ecu as I need to know what color wires go into the black and the brown relay holder ... a4 b6 1.8t manual .. the 219 goes into one and a 4 prong into another .
Are the wires not in the connector? Are you splicing wires / repairing damage? All you need is a wiring diagram... that will show you what you need to know.
@@EXOVCDS nope Completely my bad as half were so corroded then fell out and the others I pulled out but had them zip tied but also were toast so cut em back and after flipping ecu over few times that was that.. Never thought putting back like 6 wires would be such a pain..
What blows my mind is all These people are dealing with issues with no power to ecu .. crank semsor . ect ect .. knowing the relay carrier has been compromised with water and replace relays and dont even clean and check the backside of the relay or least from what ive seen (trust me ive paused and zoomed ) Maybe if easier Can send quick picture or two .. 5309416767 or jeremyremington78@gmail.com ..
@@jeremyremington8897 I had to deal with wet relays not too long ago. fkh161.ca/Audi/ComponentPowerRelay.jpg
I'll send you a wiring diagram in an email shortly. You can edit your last reply and delete the phone number & email address.
Hello I have 2002 Audi 1.8T Quattro - with Check Engine Light ON, Scan shows a P0716 and Sometimes PRNDS "All ON" - I need to change the same sensor that is on your Video...??? - On some forum i find that low transmission oil level can cause the same Codes? - Also what is a part number for that? - Please Help --- Donation DONE ;-)
MrTotalZone This video is about the "engine speed sensor" (crankshaft position sensor). P0716 is the transmission input speed sensor... not the same part.
***** :( - this look easy - the other maybe a complicated...?
MrTotalZone I will send you more information a little later.
wiki.ross-tech.com/wiki/index.php/17100/P0716/001814
***** OK THANKS!!! - I mine time i just find that: www.germanautoparts.com/Audi/A4/Transmission/194/2 --- its two of them: $106.32 or $94.25
MrTotalZone You / we don't know if it is a sensor problem... could be a wiring or bad connection issue. Could also be low on transmission fluid. Send me an email and I will send you some info. fkh161@fkh161.ca
I have been having problems with 1.8t not starting when really hot was it the same problem with this one? Mine does turn over and I give it a couple seconds an then it starts just fine and it wont do it until the nect day
Yes, long crank tome when hot.
Yeah exactly
Thanks man ima change it
I have the code p0717 and p0722 turbine speed sensor, and something with shaft do you know wat it could, gear to shift, so tranny wont run at all can you help me?
bboygoofy714 year of vehicle & transmission type / code?
Thank u for the quick reply,
I'm so exited to do this tomorrow.
Again, ur video has helped me to get the idea of the replacement!
Thanks!
+Ivaylo Vasilev Is your engine not running / starting? Or is it stalling sometimes?
+Thomas EXOVCDS mine is stalling sometimes.....with no warning lights on.
+bigtreesfall Could be crank sensor... does it start right away? Could be ecm relay or something else. Have you checked for fault codes?
+Thomas EXOVCDS Thx for such a fast response!
it starts fine. I do recall (twice) it shutting down after initial start, but second start was fine.
right now i have no warning codes, and twice now has it just shut down, while coasting both times.
My car hasn't been starting easy when it's cold and/or when it sits too long, if it's just been a couple hours, it will start right up but in the morning is when I have the most trouble, especially now that it's getting colder out. I make sure to go out and start my car on lunch breaks. Well I got around to checking codes, p0116, p0321 (speed ignition input/crank sensor whatever it's called lol) and P0420 which is catalytic converter don't know why but that's the easy one to remember, is it coincidence that it has to do with exhaust? Which I think P0420 can be set off from running too lean or rich and giving giving bad emmissions and in return setting off the p0420 catalytic converter picking up those bad emissions, then again that could be a host of many other problems all on it's own. But I started from the basic and cheapest with changing those 2 sensors the one on this video (crankshaft position/ignition speed input) sensor, and the coolant temp sensor, located by the firewall behind the engine with the c-clamp and 4-pins. I hope it's not the one underneath by the radiator fan, can't get much info on that coolant temp sensor and if that one would have a different code thank P0116 or not. Well i'm letting my car sit overnight and not touching it until morning to see if it still has trouble starting or not.
I also have an engine ticking noise, almost makes it sounds like a diesel engine but not quite as loud. It only does it when the engine is hot (a few minutes after needle hits normal operating temperature) and low RPM or idle. It doesn't do it when my engine is cold. Or when I give it high RPMs. The noise ticks steady with the engine, until I get to a higher RPM and it goes away until i let off the gas and the RPMs drop again. I was leaning towards timing chain tensionor, but told also could be sticky lifters, or even a spark plug, even though I don't think I'm misfiring when my engine is hot. It's weird my car has one problem when engine is cold, another when its hot
Update. It's the next morning and after my car sat for 16 hours or so, and it started first try. Yay
I can't seem to find the part for an Audi A4 18.T Quattro Automatic. Could you help me out. I don't want to buy the wrong part.
Choose the model year you have: www.germanautoparts.com/Audi/A4/EngineElectrical/182
A4 1.t Quattro 2001 B6
I was thinking a coolant sensor or a relay, just not very clued up on electrical, back in the day our cars were only mechanical...there was no computer boxes or any of that sensor staff :)
+Ivaylo Vasilev Check your youtube messages for a link to a pdf.
Awesome m8, appreciate the effort !
Do you have a part number for the crankshaft sensor?
Make, Model, engine code?
*****
2005 VW Passat 1.8t gasoline. error code PO322 I am assuming it is the crankshaft senor. Sometimes it is hard to start up and the EPC light comes on and the car runs a little rough. Still drivable though.
Chris Davis www.germanautoparts.com/Volkswagen/Passat/EngineElectrical/182/6
hey thomas have you ever came across a problem in which a crank sensor would throw off the tcm in a audi 1.8t with a 01j cvt transmission?
no... don't think so. If no engine running issues, I don't see how the tcm would be affected... unless the crank signal gets corrupted on the way to the tcm. what is the car doing or not doing?
+Thomas EXOVCDS ok buddy recently i had a pal who was getting some tcm issues and after much troubleshooting it ended up being his crank sensor so i was thinking if that could be the issue with my car as well im getting a p1773 hydraulic pressure sensor 1 signal to large and a p1741 clutch adaptation limit reached i changed 2 mechatronics unit and everything else possible concerning the transmission filters seals clutches variator assembly idk wat can be causing it can you assist? Thanks.
+Shimon La Hee' You're asking the wrong guy... I've never pulled a mechatronic or done any CVT or Auto tranny teardown... aside from oil filter change.
I would gave to see what the service manual says about those codes and go from there.
There are some great TH-cam channels that are transmission based. I'm out for an appointment... but might get a chance to post some links here later tonight.
+Thomas EXOVCDS ok thanks alot brother much appreciated
Hey Thomas I have the AWM 1.8t in a 2001 audi a4.
Im changing the crankshaft sensor and it won't come out of the hole that it's in. I wiggled the damn thing for like 2 hours. It spins but will not pull out.
Have you ran into this before?
Alex glass Yes... they can get stuck pretty good. Us some type of tool to pry / pop it out. Here's a recent video where I had to pry it out. th-cam.com/video/8WufwHIzaUM/w-d-xo.html
Thomas
Nevermind! Haha. I sprayed a lot of penetrating oil on it. Literally as soon as I got done asking you I went back to go pull on it some more and it popped out.
Thanks for the videos and the reply, you definitely helped me find it when I first started.
Alex glass No problem!
Hey Thomas. What brand name lube did you use for the o ring? Is there a specific lube I need or is it not neccessary? The same thing with the Anti Seize. Do i need that as well? Thanks
Daniel Nguyen 4:25 is engine oil... anti-seize is not needed, you can also use a little bit of engine oil.
oh ok. awesome. thanks!
I'm having problems with my a4 cab, its an 04 audi A4 cabriolet 1.8T FWD model, the engine turns but doesn't turn on, we changed spark plugs on a engine mechanics suggestions and it seemed to work for 3 days but i just got tow'd home by dad. i was told if the car cranks but doesn't start. and the rpm dial doesn't go past zero then it would be the crank shaft sensor. just wondering if you could give your second opinion on it. the cranking and not turning on has been intermittent and very random for the past 2 weeks, and earlier i was able to turn it on after the cranking issue however it shut off on me and gave me a Red ( normally orange) battery warning light. just wondering if im looking at the right place to solve my problem.
Yes could be crank sensor if you are not getting an rpm signal. Use a scan tool to be sure to get an accurate rpm reading.
thanks i'll try that out, but if it isn't he crankshaft sensor what could it be then?
+Major Winters Could be fuel related... could be timing belt or something else. You need to check individual components to rule them out.
i'll have to check timing next then, as i recently had to replace both fuel pump filter and fuel pump.
Question. I have an 04 Audi A4 quattro avant and I was planning to replace the cps but noticed that it didn't exist. Just an empty hole and no bolt. I have a 6 speed manual. Am I missing something or was my car made that way?
What's the engine code? AWM? ATQ?
***** sry. I was looking at the wrong thing. That sensor was extremely hard to see. After some bruised knuckles I was able to get it replaced. It didn't fix my start issue though.. So now onto the cam position sensor.
Jay Sheeley What engine code? AWM? ATQ? Camshaft position sensor should not cause a no start.
***** Its a 1.8T engine. no codes yet but sometimes when I go to start the engine it will hesitate to start. I've replaced the coolant temp sensor with a new bosch sensor and now the crank position sensor. Last year I replaced the spark plugs, coil packs, fuel filter and injector seals.
Jay Sheeley Every start-up or only when cold / warm. Could be a faulrt EVAP purge solenoid, fuel pump (fuel draining back), fuel pressure regulator... you need to monitor engine sensors & fuel pressure to find the issue. The ECM data stream can be monitored to find values that are out of place... the trick is finding them when they happen.
My sensor bolt is an allen bolt and I can't crack it free. I'm worried about proceeding for fear of stripping the head.
Kinburn101 Use an extractor socket to bite on the outside of the bolt head. www.irwin.com/uploads/products/large/bolt-extractors-802.jpg
Would this make the car not run?
Yes, a bad crankshaft position sensor (engine speed sensor) can cause an engine to stall or not start.... but there could be other reasons as well. Year, make, model, engine? Any ECM fault codes?
Plz i need your help...My Audi 4 3.0 Refused to start,what could be the problem?
Is the engine turning over? Are you getting spark? Are you getting fuel? Is fuel in the tank? Did you check for stored fault codes? When was the last time the engine ran?
Yes the engine is turning over! there fuel in the tank,No i havent check the stored fault codes...It was on monday that the engine ran last
+love treasurer Could be several things... while you hold the key in the start position, have someone tap on the bottom of the gas tank with an open hand... don't hit the tank too hard, but not to soft. If it doesn't help start the engine... it could still be the pump, but you would have to check further inside the car at the pump connector.
Could be a crankshaft position sensor fault, could be a blown fuse, broken timing belt... or something else.
by any chance do you have the wiring diagram for an 03' B6 1.8t ?
Which diagram... engine, auto transmission, lights, AC etc?
+Thomas EXOVCDS I am sorry for the specifications.
the engine and electrical please
Engine & what electrical?
Here's the engine pdf: fkh161.ca/Audi/A4/03A4Engine.pdf I picked 03 A4 1.8T Automatic Quattro
So did you need anything else? Did I give the correct info?
I have a 99 VW Passat 1.8t I just changed the crank case breather hose bc it was broke and spit oil out every where I fixed it but now it won't start it'll crank and crank until a ball of fire come out the intake can you help me
Probably not because of the breather hose... if that were the case, you can disconnect it again and the engine will run. Look for anything that you might have forgotten to reconnect (a big vacuum hose for example).
IV went over everything and IV taken the hose off again it still dose nothing just cranks over until it pops and fire comes out the intake I even tried starting fluid
Hi guys hope someone out their can help me.I had an audi a4 2003 18t B6 .I drive my car from work park and go shopping.When i got back my car won't start.Please help
Starter doesn't turn the engine... or it turns the engine?
@@EXOVCDS starter turns engin very well.The first time i try start my car .Engine running but on about 500rpm then engine go off.Do it for few times and after that car won't start at all
Check for fuel pressure, check for spark. Do you have a scan tool? Can your scan tool communicate with the Engine computer?
@@EXOVCDS Hi good day.You this morning when i go and just check if he will start and on the third try he start and idle smooth.But after a few minutes the idle drop and feel like a jerk
Could be fuel pump problem... maybe something else. You need to check things... tell me what works and what does not. Can you check fuel pressure? Can you check for engine computer fault codes? Do you have scan tool?