If the crankshaft position sensor, or timing cover, are moved, removed, replaced, or disturbed in any way, the focus point of the sensor changes and the relearn data that the PCM uses is incorrect. If the engine or PCM is replaced, the relearn is necessary as well. Incorrect relearn data has a direct affect on ignition timing and injector timing and will cause a multitude of driveability issues
In a situation where you have a straight shot at the hole, Which you don’t always have the ability to do. I like to use the caliper to measure the depth of the reluctor wheel with the bottom depth gauge then measure the sensor and subtract the two. That’s just me though. I think I have a touch of the ocd and if I don’t know exactly what it is it will drive me nuts. Sometimes I still wonder if I did it right anyway. It’s a nightmare. Thank you for taking the time to help us with your videos.
As a DIYer this is like a huge revelation to me hahahaha!!!! AWESOME. I learn so much on this channel. I had a dream last night that you hired me as an apprentice...a 49 year old drummer working at SMA...your worst nightmare lol
It's an old trick my grandmother taught me. I read that in the description of the video and just had to see what that funny line was about. Great tips like this takes the guess-work out of the repair job. Thank you South Main Auto Repair.
Verneer caliper not a micrometer. Great tip .My truck needs one starts hard runs ,acelerates rough and then when I shut it off it doesn't start right away.
I used to own a '00 Jimmy. Nothing but problems! When the money light came on for the 7th time in 3 months, I yanked that engine out, parted the truck out, and dropped the engine into a '89 S10 Blazer, and bolted on a Edelbrock intake manifold, manual choke carb, and a chinese HEI distributor off eBay. FIXED! She got 17.5 mpg, WAY better throttle response and low-midrange power. That is, until the chinese HEI module fried itself after just 8k miles. Second one lasted 2k miles. Gutted the second one and installed all Echlin electronics. FIXED again! 😁 Great tip! Even with all the trouble I had with that Jimmy, the crank sensor was the one component I never had to change, lol. I'll definitely remember this one. 👍
Great tip about the air gap! I used play dough and measured. I had to use both shims to get the proper air gap. Truck started right up and my oil leak is gone! I also dropped the connector gasket and put it back on to the connector and had to repair the wires with liquid tape. Thanks for the video!
It wasnt until my truck started shuttering that i was questioned if my sensor had shims or not. The previous owner did not have shims so when i ordered a new crank sensor i just pulled it out and put the new one. It started shuttering so i changed out the fuel filter, fuel pump, fuel lines, plugs, wires, distributor and just went ahead and put a new timing chain while i was at it. What a waste of time after watching this video come to find out some sensors dont come with shims, so they were put on and wham, it runs now. SMDH.
A side note to anyone that cares. I was getting a p0300 code on my 2002 chevy silverado. Took it to 3 mechanics, couldn't solve it. I replaced my crank sensor after researching as much as possible. Wasn't throwing a crank code at all. Fixed my p0300. Finally a mechanic says it! Thanks Mr. O!
0.030 is minimum for the air gap I wonder what the maximum is, where do you get those spacers I can’t seem to locate any, I will look for a suitable washer. So if the face of the sensor is gouged from contacting the exciter wheel does that mean main bearing slop, or would a wearing timing chain cause this ?
Great videos Eric. Of all the TH-cam channels I subscribe to, you are the first I check for new content. Keep up the great work. Small point... those are vernier calipers and not a micrometer. Likely not news to you and guessing you just misspoke during filming.
Hey Eric great video I just did this on my 1999 gmc sierra. Also did this on my ex wives 2008 Silverado they send 2 in package I measured like you did truck ran great I only had to add one shim
G'day, Mr. O! “Having rumpled clothing is a pressing issue, but I am sure that we can iron out a solution.” To Shim or not to Shim, that is the Question! Another, Fantastic Quick Tip: (Tuesday) P0335 Chevy Crankshaft!! Thank you very much! Cheers! 😊✌🏼🛠❤️
just curious if you could have just measured from the outside flange of the motor with the caliper and then measured the the distnace from the snesor to its base?
Quick tip Tuesday on a Thursday? but it's actually Tuesday. Great tip no matter what day of the week it is. Disclaimer before I get yelled at by someone Yeah yeah I know, it was recorded on a Thursday.
Hey, nice video. I have a 2006 Chevy Silverado 4.3 manual with 180k miles. I’m having issue with misfire when going down on the way at about 70mph it starts to vibrate the shifter and misfires, and it hesitates making the mph go down. I already changed spark plugs, checked the wires, changed ignition coil, crankshaft sensor. Do you thing this could be my problem? I’m about to check the airgap on it. Thanks
Hey my name is Mike! & that there tool my friend, I've always called callipers, or Vernier Callipers to be more accurate!!! That's my tip for Tuesday 🤣
Hey Eric, just an idea but I think it'd be cool to see a video on some common automotive no-cost solutions that you see often in the shop. Love the videos!
I have a p0335 code in my 99 cummins I wanted a shop to replace it but wouldn't until they did a diagnosis is this just to get more money out of you. I would have nothing to lose having this replaced and if that didn't fix it then diagnose it
So if the space between the reluctor wheel and the sensor arent within speck will that cause a no spark? I had same code, changed the crank shaft sensor and wasnt getting spark. It didnt come with and shims either. Thanks man.
@@carcasscruncher9354 if the crank sensor doesnt sense metal it wont activate the coil or injectors. ive messed with the harnesses in these trucks for a while you can literally take a paperclip thats like a quarter inch away from the sensor and it will trigger it. (see my channel)
@@lt.schlechtnacht9414 I’m having a no spark issue right now. The new crank sensor the previous owner did not put a shim on it, I did notice that it was scratched up. I wonder if I get another sensor with a shim that it would solve my problem?
@@kevinking9874 i would suggest doing that. buy a new sensor and put a few shims in it. the shim i have in mine I believe is 30 thou. but yeah try that and give me feedback. usually a no spark means either no power to the engine harness or the crank sensor isnt working.
Have the same type issue on my dodge dakota flywheel location. Dodge shows no recommendation on setting air gap (not that i could find) destroyed one crankshaft position sensor. Had to figure this out and shim the thing. Joy
I believe Mr. O. was referring to a known GM issue wherein the crank pulley and or balancer loosens or wears out and this causes the data from the sensor to throw a code.
This was a great video! I’ve been watching a bunch of TH-cam videos to learn how to replace the Crankshaft Position Sensor after my OBDII scan tool showed a P0338 code on my 2000 ZR2. But then I thought, “How do I know if I need a shim? And how do I measure that distance?” Brilliant technique!! And I have a nice micrometer. Thanks a million!! PS: Do I need to do some kind of driving re-learn sequence to get the Blazer to properly use the new sensor? Thanks again!
Had the exact thing happen to my 2011 Nissan Versa. Took my mechanic a few tries but it finally threw a code for him. If it wasn't for the code, it might have been parts cannon time and he didn't want to do that.
Great video. I am in the same exact scenario. I was wondering if you could relay the pinouts with color codes. Only the center yellow wire is connected the other two are detached. The replacement part by BWD has all white wires (ABC) and no schematic. Supplier was no help. Thank-you again for the great videos.
I'm working on 08 and im like sma I hope there is a video! Stalled only when hot...212 at idle sitting g at idle for 10 seconds or more maybe 20...30 lol it dies for sure after time...hot.
the piece I have must have broke in the hole.. The one that came out is smaller then the replacement? Do they seperate? Or do I grab whats in there and pull on it? It looks like the piece in there is metal? Nobody can answer this yet..
Sort of related. Can't find either a crank or cam sensor at O'Reilly's? Doesn't show on their web site for a 1994 Chevy Silverado K1500 V8 5.7 4x4? Could it not have either?
Thanks for the tip Eric.. I have the same problem except I have a Nissan 1.8 and I cannot find anyone who has the connecter.. How can I find on? I've checked junkyard and ur standard parts stores..
Hi, Great tip! I just bought a sensor from A1, but am concerned, that the sensor is not held snugly in the retaining plate. I haven't installed it yet, but wonder if that play is 'not a concern' . The part is from Taiwan. Thanks for your great channel!
My 02 astro had crank no start symptom, and I replaced the ckp sensor without the shim. my q. is do you need to rotate the ckp pully to tdc or you just stick it inside?
Man everyone is killin him in the comments for this. Really not a big deal i knew what he ment and im sure everyone else that takes the time to correct his every word did as well. Thats wasnt the point of the video its just a quick tip to help everyone. Give the guy a break
I have. 98 Silverado 5.7l. New distributor. Crank sensor plugs wires and pcm. Keeps frying coil packs and icms. Had it in a shop and they adjusted timing. But didn't fix the issue. Showing cam crank correlation code. And crank sensor variation not learned. Any help is appreciated
I remember having a paper shim on a sensor and locking in the sensor when it touched and the reluctor would wear the shim off but don't remember the application???? Old Timers.
If the crankshaft position sensor, or timing cover, are moved, removed, replaced, or disturbed in any way, the focus point of the sensor changes and the relearn data that the PCM uses is incorrect. If the engine or PCM is replaced, the relearn is necessary as well. Incorrect relearn data has a direct affect on ignition timing and injector timing and will cause a multitude of driveability issues
In a situation where you have a straight shot at the hole, Which you don’t always have the ability to do. I like to use the caliper to measure the depth of the reluctor wheel with the bottom depth gauge then measure the sensor and subtract the two. That’s just me though. I think I have a touch of the ocd and if I don’t know exactly what it is it will drive me nuts. Sometimes I still wonder if I did it right anyway. It’s a nightmare. Thank you for taking the time to help us with your videos.
As a DIYer this is like a huge revelation to me hahahaha!!!! AWESOME. I learn so much on this channel. I had a dream last night that you hired me as an apprentice...a 49 year old drummer working at SMA...your worst nightmare lol
That's the kind of knowledge that we love and usually comes from hard lessons
Eric was just testing everyone to see if they knew the difference between a micrometer and a vernier caliper! Excellent job!
Thank you. I am trouble shooting a crank position sensor today on a 4.3L.
It's an old trick my grandmother taught me.
I read that in the description of the video and just had to see what that funny line was about.
Great tips like this takes the guess-work out of the repair job. Thank you South Main Auto Repair.
Haven't even had my morning coffee yet, and I've already got myself a quick tip! Gonna be a good day. Thanks Dr. O!
Verneer caliper not a micrometer. Great tip .My truck needs one starts hard runs ,acelerates rough and then when I shut it off it doesn't start right away.
Wow, he even quotes Shakespeare! An edumacated man!
Wow, I never thought I'd find a use for play-doh in the shop.
Never a dull moment in the SMA shop. Great mind candy while I'm waiting to get my eyes examined. Thanks Eric.
I used to own a '00 Jimmy. Nothing but problems! When the money light came on for the 7th time in 3 months, I yanked that engine out, parted the truck out, and dropped the engine into a '89 S10 Blazer, and bolted on a Edelbrock intake manifold, manual choke carb, and a chinese HEI distributor off eBay. FIXED! She got 17.5 mpg, WAY better throttle response and low-midrange power. That is, until the chinese HEI module fried itself after just 8k miles. Second one lasted 2k miles. Gutted the second one and installed all Echlin electronics. FIXED again! 😁
Great tip! Even with all the trouble I had with that Jimmy, the crank sensor was the one component I never had to change, lol. I'll definitely remember this one. 👍
Hi Eric, cool tip we call it 'Blu tack' across the pond. S
Great tip about the air gap! I used play dough and measured. I had to use both shims to get the proper air gap. Truck started right up and my oil leak is gone! I also dropped the connector gasket and put it back on to the connector and had to repair the wires with liquid tape. Thanks for the video!
Did you have a crank no start before?
I seen the ckp sensor rubbed before with a p0300 and tach going bonkers. Great tip.
It wasnt until my truck started shuttering that i was questioned if my sensor had shims or not. The previous owner did not have shims so when i ordered a new crank sensor i just pulled it out and put the new one. It started shuttering so i changed out the fuel filter, fuel pump, fuel lines, plugs, wires, distributor and just went ahead and put a new timing chain while i was at it. What a waste of time after watching this video come to find out some sensors dont come with shims, so they were put on and wham, it runs now. SMDH.
It takes experience to know when you're in too deep. Nice tip.
That’s what she said
Miked mine on my 99 burb 5.7 and the closest i could get was with 2 x 3/4 inch copper compression gaskets that are .062 thick, same sensor
Trinity was looking for that in her play dough bucket😂
A side note to anyone that cares. I was getting a p0300 code on my 2002 chevy silverado. Took it to 3 mechanics, couldn't solve it. I replaced my crank sensor after researching as much as possible. Wasn't throwing a crank code at all. Fixed my p0300. Finally a mechanic says it! Thanks Mr. O!
Did you have a crank no start? Like not getting any spark?
@@kevinking9874 No, I had spark.
Free tip back to Ted Branston ,it’s called a Digital Caliper ,it has to have a Vernier scale on it to be called a Vernier Caliper
exactly. buncha brainiacs in the comments section.
Great tip Dr.O I usually use plasti-gage but I like your way it's fun to play with Play-Doh.Great video Dr.O and as usual keep them coming.PEACE
Good tip for a DIYer ! I like these quick tips !!
Lol 2 shim or not to 2 shim that is the questions lol great video
what if you are over .030?
Nice tip bud....however thoses are digital calipers not mic's..made me laugh.great work eric o....have a great day
0.030 is minimum for the air gap I wonder what the maximum is, where do you get those spacers I can’t seem to locate any, I will look for a suitable washer. So if the face of the sensor is gouged from contacting the exciter wheel does that mean main bearing slop, or would a wearing timing chain cause this ?
Great videos Eric. Of all the TH-cam channels I subscribe to, you are the first I check for new content. Keep up the great work.
Small point... those are vernier calipers and not a micrometer. Likely not news to you and guessing you just misspoke during filming.
Hey Eric great video I just did this on my 1999 gmc sierra. Also did this on my ex wives 2008 Silverado they send 2 in package I measured like you did truck ran great I only had to add one shim
In my neck of the woods bearing strips are expensive and only good for .005 or less. He is measuring .030 or more. Great idear.
Plasti Guage, what is used on bearing and piston to valve clearances. Nice tip.
No more of that stupid plastiguage.. It's playdough time!
Great tip. Thank you
Fascinating. I'm working on a 2000 gmc sienna with an intermittent misfire. I'm going to try that relearn procedure.
Love the quick tip Tuesday Mr.O! Enjoy your week :)
Since I own an 07 chevy, that's a fantastic tip :) Thanks much!
Wrigley's spearmint gum works also. LOL
thats not a Micrometer, thats a vernier caliper :P sorry had to :P great tip, I would have never thought to do this, look forward to your next vid :)
G'day, Mr. O! “Having rumpled clothing is a pressing issue, but I am sure that we can iron out a solution.” To Shim or not to Shim, that is the Question! Another, Fantastic Quick Tip: (Tuesday) P0335 Chevy Crankshaft!! Thank you very much! Cheers! 😊✌🏼🛠❤️
just curious if you could have just measured from the outside flange of the motor with the caliper and then measured the the distnace from the snesor to its base?
You sure could
This exact thing happened to me, so this video helped me out tremendously! Thanks!
Quick tip Tuesday on a Thursday? but it's actually Tuesday. Great tip no matter what day of the week it is.
Disclaimer before I get yelled at by someone
Yeah yeah I know, it was recorded on a Thursday.
Just the tip Tuesday
Hey, nice video. I have a 2006 Chevy Silverado 4.3 manual with 180k miles. I’m having issue with misfire when going down on the way at about 70mph it starts to vibrate the shifter and misfires, and it hesitates making the mph go down. I already changed spark plugs, checked the wires, changed ignition coil, crankshaft sensor. Do you thing this could be my problem? I’m about to check the airgap on it. Thanks
hey eric....another tip if the mains wear it can put the sensor out of the window also
Hey my name is Mike! & that there tool my friend, I've always called callipers, or Vernier Callipers to be more accurate!!! That's my tip for Tuesday 🤣
Hey Eric, just an idea but I think it'd be cool to see a video on some common automotive no-cost solutions that you see often in the shop. Love the videos!
Eric o. That was a good quick tip thursday thank you for what you do showing us these tips thanks
Ol Eric hope you doing good man
Great tip! I usually find playdoh stuck to the bottom of my shoe lol maybe I'll save it from now on 😂
Eric
Another great and informative video. Thank you.
God bless
Paul
One of the many perks of having kids, you usually have some playdough laying around somewhere 😜
Did you swipe Hanna's playdoh again? good tip as long a yah put oil on that doh before putting it in.
I have a p0335 code in my 99 cummins I wanted a shop to replace it but wouldn't until they did a diagnosis is this just to get more money out of you. I would have nothing to lose having this replaced and if that didn't fix it then diagnose it
So if the space between the reluctor wheel and the sensor arent within speck will that cause a no spark?
I had same code, changed the crank shaft sensor and wasnt getting spark. It didnt come with and shims either.
Thanks man.
Any response? I still can't get spark to my coil. CKP voltage is ok.
@@ismaelcarrillo3956 no. Still no spark for me either. Got a newer work vehicle and left the old one sitting in drive waiting for time to work on it.
@@carcasscruncher9354 if the crank sensor doesnt sense metal it wont activate the coil or injectors. ive messed with the harnesses in these trucks for a while you can literally take a paperclip thats like a quarter inch away from the sensor and it will trigger it. (see my channel)
@@lt.schlechtnacht9414 I’m having a no spark issue right now. The new crank sensor the previous owner did not put a shim on it, I did notice that it was scratched up. I wonder if I get another sensor with a shim that it would solve my problem?
@@kevinking9874 i would suggest doing that. buy a new sensor and put a few shims in it. the shim i have in mine I believe is 30 thou. but yeah try that and give me feedback. usually a no spark means either no power to the engine harness or the crank sensor isnt working.
Have the same type issue on my dodge dakota flywheel location. Dodge shows no recommendation on setting air gap (not that i could find) destroyed one crankshaft position sensor. Had to figure this out and shim the thing. Joy
go 0.030 " use a sticky paper gasket circle...
ok you confused me. you were saying about crankshaft end play due to thrust bearings but in that configuration it wouldnt matter.
I believe Mr. O. was referring to a known GM issue wherein the crank pulley and or balancer loosens or wears out and this causes the data from the sensor to throw a code.
What about wear in the timing chain, stretch
I didnt even know that was a problem thank you
This was a great video! I’ve been watching a bunch of TH-cam videos to learn how to replace the Crankshaft Position Sensor after my OBDII scan tool showed a P0338 code on my 2000 ZR2. But then I thought, “How do I know if I need a shim? And how do I measure that distance?” Brilliant technique!! And I have a nice micrometer. Thanks a million!! PS: Do I need to do some kind of driving re-learn sequence to get the Blazer to properly use the new sensor? Thanks again!
Thanks for being thorough. Great video
What is the MAX clearance that will work?
Ya nobody ever mentions that I would be tempted to just add both spacers and call it a day
Had the exact thing happen to my 2011 Nissan Versa. Took my mechanic a few tries but it finally threw a code for him. If it wasn't for the code, it might have been parts cannon time and he didn't want to do that.
Great tip , cheers Eric O
Dont you need to allow for the o ring? The o ring will keep it from inserting all the way . we are talking thousanths right ? what say you?
Well I don’t think you would dare install it without the oring, it collapses as the bolt is tightened
Best of the morning to you Eric.
Took son's truck sensor out and sure enough the ASE mechanic that rebuilt the engine did not shim the sensor, it had a gouge and scratch marks on it.
this is also popular method for oil pickup tube to pan clearance.
Wow where else can u get shimming with Shakespeare, what a channel!
Great video. I am in the same exact scenario. I was wondering if you could relay the pinouts with color codes. Only the center yellow wire is connected the other two are detached. The replacement part by BWD has all white wires (ABC) and no schematic. Supplier was no help.
Thank-you again for the great videos.
I'm doing this same job on my 99 Tahoe with a 5.7 vortec do I have to have some relearn procedure done after installing the new sensor?
If you get a misfire code you will. There's one other code you can get but I can't remember what it is
clever and simple! dont forget to hang back the picture , lol
I can do it cause you showed me how! Thanks!
... GREAT TIP !!...Thanks ;)... 'bout time.
Bearing clearance squshable strips are a clever idea too, but playing with putty is fun lol :-D
I have not seen them to measure gaps this big though? Have you?
It exists, but it's a really stupid price.
plastigauge.co.uk/shop/plastigauge-pl-d/
Yeah, gonna have to go find shims. silicone isnt working out
I'm working on 08 and im like sma I hope there is a video! Stalled only when hot...212 at idle sitting g at idle for 10 seconds or more maybe 20...30 lol it dies for sure after time...hot.
Can I clean the crank shaft sensor on my 99 Chevy Tahoe replaced it 3 years ago
the piece I have must have broke in the hole.. The one that came out is smaller then the replacement? Do they seperate? Or do I grab whats in there and pull on it? It looks like the piece in there is metal? Nobody can answer this yet..
Good to know info.
Did you put the rubber O-ring back on it when you installed it?
Sort of related. Can't find either a crank or cam sensor at O'Reilly's? Doesn't show on their web site for a 1994 Chevy Silverado K1500 V8 5.7 4x4? Could it not have either?
Thank you very much well explained appreciate it have a wonderful day.
Thanks for the tip Eric.. I have the same problem except I have a Nissan 1.8 and I cannot find anyone who has the connecter.. How can I find on? I've checked junkyard and ur standard parts stores..
Helps me out. But aren’t those called calipers?
Measure the hole with you micrometer?
That's like using a plasti- gauge for front crankshaft and Rod clearances, I'm not sure if they use that anymore.
Just the tip, and only for a minute. I stick 30 thou of grease on the end, stick er in and see what transfers over to the reluctor.
That’s what she said
Hi, Great tip! I just bought a sensor from A1, but am concerned, that the sensor is not held snugly in the retaining plate. I haven't installed it yet, but wonder if that play is 'not a concern' . The part is from Taiwan. Thanks for your great channel!
Should hold in place by small bolt
Just the tip for quik tip Tuesday on a Thursday saved for a Tuesday but filmed on a Thursday.
Good tip Mr. O. thank you.
Good tip!!
hello Eric O! how do you sync GM crank sensor after you change the sensor? thank you have a safe day!
Got a 4.3 p0300 driving me nuts. Cat not plugged. Distributor gear good. Next ,after seeing this Ill scope the sensor signal.
That was my problem. This was helpful.
My 02 astro had crank no start symptom, and I replaced the ckp sensor without the shim. my q. is do you need to rotate the ckp pully to tdc or you just stick it inside?
Eric, since you are the scope on a rope master what is your opinion on the LED test lights from snap on since they are only rated at 20mA?
I have the same problem in my crysler town and country 2010 and just noticed 2 lines in the sensor is this why they want the shim done
Did he just call those digital calipers micrometers?
Paul Sosa
Yup, he must have picked that term up from the Wing Wang company.
@DYI harbor freight I just keep spare batteries in the case too.
Paul Sosa just get a set of manual calipers.no batteries needed..and yes he called calipers, a digital mic...lol....two diffrent tools
Potato, potatoes. Got the job done right :)
Man everyone is killin him in the comments for this. Really not a big deal i knew what he ment and im sure everyone else that takes the time to correct his every word did as well. Thats wasnt the point of the video its just a quick tip to help everyone. Give the guy a break
Thanks Eric.
I have. 98 Silverado 5.7l. New distributor. Crank sensor plugs wires and pcm. Keeps frying coil packs and icms. Had it in a shop and they adjusted timing. But didn't fix the issue. Showing cam crank correlation code. And crank sensor variation not learned. Any help is appreciated
I remember having a paper shim on a sensor and locking in the sensor when it touched and the reluctor would wear the shim off but don't remember the application???? Old Timers.
Ahh as I recall DoDge 3.3 use the paper shim on the crank sensor and cam sensor installation......