Thanks Paul. I have not forgotten the Plenum Splitter for you. In testing the mod, I seem to have lost some power 5500-6500rpm. My plugs need changing so I will do that first and see if that improves. I also have a hesitation around 5200-5300rpm but that was starting to happen before the mod. Maybe it is the O2 sensors? I have more mid-range torque though. Your thoughts please.
+Desmond Sequerah Hi, Des, not to sure at the moment, changing the 02 sensors on mine hasn't made a blind bit of difference! my hesitation is always below 2000rpm and when using very light throttle movements, so far I've cleaned the throttle body replaced the throttle position sensor, replaced the mass air flow sensor and now the 02 sensors! I'm thing of replacing the idle control valve as it is fast becoming just a process of elimination, Porsche have now started on about the variocam solenoid!
Hmmm. Must be very frustrating for you. Mine was running perfect until recently when I pulled through the gears to 6500 rpm and noticed a hesitation around 5200 rpm. I happens most of the time but not all the time. As I mentioned, it struggles between 5500-6500. I think it was doing that before I installed the plenum splitter but not sure. I will replace the plugs and if that does not work, I will put in the standard one back and see if it makes a difference. As for your problem. Does it feel like electrical or fuel hesitation?
Desmond Sequerah all my instincts are saying its a fuel problem! trouble is I'm old school, I grew up on carburettor's and I really don't like all this new shit, lol if it was a carb I would say dirt idle/slow running jets. to me, just listening to the car on tick over it is running very slightly to rich and hunting just a bit, (so it needs leaning out just slightly) but apparently that's not professional anymore! lol when I come off and go back on the throttle (lightly) it jerks just for a split second,
It may be a long shot but have you tried a good injection cleaner. If injectors are dribbling or not spraying at low revs it could cause hesitation and also idle hunting and rich smelling because of the unburnt fuel.
+Desmond Sequerah yes, tied that back last year, :) thing is its just enough of a problem to annoy you, but not enough to really effect the use of the car, lol
Please bear in mind that this is an old video . But sort of yes, every time it goes in for MOT it is very close to the limit. my mot guy normally has to rev it hard for a couple of minutes to get the readings down. he thinks its just where I don't use regularly. I now do the engine service a couple of weeks before the test and run a cat cleaner through it. That seems to help a bit.
hi paul great videos mate, ive just purchased an 04 boxster, its started spluttering like flat spots , I have an OBD2 reader but I cancelled the codes and turned off the light as I fitted a new MAF and oil separator and it ran great but now I'm getting 02 sensor, cat and air coming up on my reader, do you think it could be a sensor issue??? cheers mate in advance
Hi Nick, it does sound like a sensor problem. what codes are you getting? the early car's only had 2 sensors, one for each bank, but some of the later car's had 4, 2 each side, how is it running at the moment?
At least it doesn't drone. I removed mine and went back to OEM with a little modification. I drilled a 10mm hole into the primary chamber on each side through the tail piece. Sounds a little louder but no drone. BTW any ideas/info on supercharging or turbocharging out your way.
+Desmond Sequerah no I've never gone done that road, I know the principals but that's about it. I thing I would go the route of putting a 911 engine in personally
@@Paul1962 yes i have 2. Design911 shows for 2.5 only option 4. Nowhere can i find information about 2 versions of two and four. Do you have a document where I can learn more about it? thank you Paul
@@PorscheBoxster986 I don't have documentation any more, I crashed my website a couple of years back and lost a lot of stuff. From memory the early cars, first couple of years (it may have be the pre-face lift 97 - 02) had 2 sensors, after this they changed the 4 sensor setup. Car destine for the American market had to have the 4 sensor setup from day one (1996/7) to meet their emissions law.
Hi, sorry for the late reply, Porsche did the diagnosis and say both o2 sensors had gone, the odd thing was no check engine light came on, I do have my own fault code reader now
That was a good tender touch getting that O/S sensor out though.......... you don't want to know what Porsche charged me for an O2 sensor that THEY broke when doing my clutch and RMS..... wish I'd paid 30 quid for one LOL Where in Essex are you , if indeed you are in Essex, I'm Colchester
Rules to changing o2 sensor. Step one. Drive car. Step 2 use correct tool and keep tool flat against head of o2 sensor. Step 3 add lube unto 02 sensor. Step 4 remove o2 sensor. Do not do this with a cold car.
Those are good basic rules. Since handling seized components is more advanced, we assumed that anyone attempting this would already know the fundamentals. We focused more on the technique of separating components while applying the least amount of stress to them.
+Desmond Sequerah well that wasn't strictly true, the exhaust tone has changed slightly, lol it is just a little more raspy now! lol but that is it! lol
@@Paul1962 so I am having the same issues a hesitation after shifting and then a winding acceleration at around 4000 rpm....have done the same fixes with no luck, have you narrowed it down and found the solution yet?
Paul1962 I think my problem was worst than the video. I actually had pay someone to take the muffler off, pop a blood vessel, rethread it, and done. I’m sure it 100% welded itself on.
+Eric Gruntfuttock that's a possibility, and I will be looking into it, I brought a code reader over the weekend and will keep a regular check over the next few weeks for any fault codes, it may just need time to settle in with the new oxygen sensors, so I'm going to focus on getting the top mounts changed this coming weekend, then reassess this hesitation problem.
Why not use a penetrating oil, or coca-cola? Either would have helped break those sensors free. Coca-Cola actually works exceptionally well for seized bolts, or in this case, an old O2 sensor.
+Desmond Sequerah no not really, I am surprised that changing 2 dead oxygen sensors has made no difference at all, but that's life, at least I now know there new!
Oh Paul, you do try your best.... WD40 is a water repellent. It is not ideal for a job like this. Plus Gas would be better. A ratchet spanner is what you also need.
Love your how to vids on the Boxster. Very helpful. Thanks!
your more than welcome, enjoy :)
hi nice vid, where did you source the new sensors , if u remember, thanks
Ebay, I believe.
Thanks Paul. I have not forgotten the Plenum Splitter for you. In testing the mod, I seem to have lost some power 5500-6500rpm. My plugs need changing so I will do that first and see if that improves. I also have a hesitation around 5200-5300rpm but that was starting to happen before the mod. Maybe it is the O2 sensors? I have more mid-range torque though. Your thoughts please.
+Desmond Sequerah Hi, Des, not to sure at the moment, changing the 02 sensors on mine hasn't made a blind bit of difference! my hesitation is always below 2000rpm and when using very light throttle movements, so far I've cleaned the throttle body replaced the throttle position sensor, replaced the mass air flow sensor and now the 02 sensors! I'm thing of replacing the idle control valve as it is fast becoming just a process of elimination, Porsche have now started on about the variocam solenoid!
Hmmm. Must be very frustrating for you. Mine was running perfect until recently when I pulled through the gears to 6500 rpm and noticed a hesitation around 5200 rpm. I happens most of the time but not all the time. As I mentioned, it struggles between 5500-6500. I think it was doing that before I installed the plenum splitter but not sure. I will replace the plugs and if that does not work, I will put in the standard one back and see if it makes a difference.
As for your problem. Does it feel like electrical or fuel hesitation?
Desmond Sequerah all my instincts are saying its a fuel problem! trouble is I'm old school, I grew up on carburettor's and I really don't like all this new shit, lol if it was a carb I would say dirt idle/slow running jets. to me, just listening to the car on tick over it is running very slightly to rich and hunting just a bit, (so it needs leaning out just slightly) but apparently that's not professional anymore! lol when I come off and go back on the throttle (lightly) it jerks just for a split second,
Does anybody have the part number for the connector to the oxygen sensor for Porsche Boxster?
hi nice job are all 4 of the 02 sensors the same for the cats as well
As far as I know Colin, being an early car mine only has the 2
ok thanks for the reply just bought a boxster 986 2003
It may be a long shot but have you tried a good injection cleaner. If injectors are dribbling or not spraying at low revs it could cause hesitation and also idle hunting and rich smelling because of the unburnt fuel.
+Desmond Sequerah yes, tied that back last year, :) thing is its just enough of a problem to annoy you, but not enough to really effect the use of the car, lol
Is Bank 1 the drivers side on a 2003 UK Boxster?
Yes, it is, thanks for watching
Thanks for the reply. Great video :)
Ever have problems with emission's ??
Please bear in mind that this is an old video . But sort of yes, every time it goes in for MOT it is very close to the limit. my mot guy normally has to rev it hard for a couple of minutes to get the readings down. he thinks its just where I don't use regularly. I now do the engine service a couple of weeks before the test and run a cat cleaner through it. That seems to help a bit.
Where are the precat ones plugging in
The early car’s only had 2 after the cats
hi paul great videos mate, ive just purchased an 04 boxster, its started spluttering like flat spots , I have an OBD2 reader but I cancelled the codes and turned off the light as I fitted a new MAF and oil separator and it ran great but now I'm getting 02 sensor, cat and air coming up on my reader, do you think it could be a sensor issue??? cheers mate in advance
Hi Nick, it does sound like a sensor problem. what codes are you getting? the early car's only had 2 sensors, one for each bank, but some of the later car's had 4, 2 each side, how is it running at the moment?
Hi Nick I have done a video reply to your question as I am starting a new play list "Your questions answered" hope you enjoy :)
sorry! here is the link, lol
th-cam.com/video/tZGa29KQhAs/w-d-xo.html
At least it doesn't drone. I removed mine and went back to OEM with a little modification. I drilled a 10mm hole into the primary chamber on each side through the tail piece. Sounds a little louder but no drone. BTW any ideas/info on supercharging or turbocharging out your way.
+Desmond Sequerah no I've never gone done that road, I know the principals but that's about it. I thing I would go the route of putting a 911 engine in personally
Hi Paul, great videos. Was this the upstream or downstream oxygen sensor.
Hi, mine is one of the early cars and only has 2 sensors, which are before the cats.
@@Paul1962 is it by production that only 2? by design911 I have 4 but I really have 2
@@PorscheBoxster986 Hi, so yours was a 2 sensor car and Design911 converted it to the 4 sensor setup?
@@Paul1962 yes i have 2. Design911 shows for 2.5 only option 4. Nowhere can i find information about 2 versions of two and four. Do you have a document where I can learn more about it? thank you Paul
@@PorscheBoxster986 I don't have documentation any more, I crashed my website a couple of years back and lost a lot of stuff. From memory the early cars, first couple of years (it may have be the pre-face lift 97 - 02) had 2 sensors, after this they changed the 4 sensor setup. Car destine for the American market had to have the 4 sensor setup from day one (1996/7) to meet their emissions law.
Thanks paul for another great video . It really helps and gives you confidence to have a go at things for yourself 😀😀😀
+Paul Salter Thanks for the support and great feedback, glad you enjoyed it :)
hi Paul..just wanted to find out ..what codes did it show you..love your channel btw
Hi, sorry for the late reply, Porsche did the diagnosis and say both o2 sensors had gone, the odd thing was no check engine light came on, I do have my own fault code reader now
Nice ... the photo of the o2 sensor you are holding up..is it an oem or aftermarket
Rolando Galang hi, it was an after market one.
Yes I agree. It would be less risky. When my engine blows up, I will have to look at that option. lol
+Desmond Sequerah that's what I like a positive attitude, lol :)
Cheers 😊
O2 sensor socket might have made it easier for replacing Paul... ??
yer, I did consider getting one
That was a good tender touch getting that O/S sensor out though.......... you don't want to know what Porsche charged me for an O2 sensor that THEY broke when doing my clutch and RMS..... wish I'd paid 30 quid for one LOL
Where in Essex are you , if indeed you are in Essex, I'm Colchester
+Mike G I'm in Tilbury, but I try to keep that quite, lol, porsche wanted £1679 to supply and fit the sensors!
I do like using Porsche OPC but some of their pricing is ludicrous........ Do you know of any Boxster / Porsche meets in Essex
+Mike G only the car's and coffee at porsche Colchester, I brought a code read earlier and its not throwing up and codes, but it's still not right
Rules to changing o2 sensor. Step one. Drive car. Step 2 use correct tool and keep tool flat against head of o2 sensor. Step 3 add lube unto 02 sensor. Step 4 remove o2 sensor. Do not do this with a cold car.
Those are good basic rules. Since handling seized components is more advanced, we assumed that anyone attempting this would already know the fundamentals. We focused more on the technique of separating components while applying the least amount of stress to them.
great video and great passion 😉
+Antonio Viola thanks for the excellent feedback, glad you enjoyed it :)
That is surprising. I would have thought you would notice at least something. It must be there for fine adjustments to air/fuel mixture.
+Desmond Sequerah well that wasn't strictly true, the exhaust tone has changed slightly, lol it is just a little more raspy now! lol but that is it! lol
@@Paul1962 so I am having the same issues a hesitation after shifting and then a winding acceleration at around 4000 rpm....have done the same fixes with no luck, have you narrowed it down and found the solution yet?
@@500hpPlusGarageHi, yes, it turned out to be an intermittent fault with the throttle position sensor. it was sending an erratic signal to the ECU
Paul1962 so did yours idle and rev fine in park but as stated hesitate in drive after shifting? Mine revs absolutely fine while parked.
Mine is manual, I would hesitate under very light throttle use, if you tried to accelerate gently, and when moving off from a stop.
Anyone having this problem in January 2020, welcome to the club
Shit time of year to have to work on car's
Paul1962 I think my problem was worst than the video. I actually had pay someone to take the muffler off, pop a blood vessel, rethread it, and done. I’m sure it 100% welded itself on.
@@GhostThriller doesn't sound to good
Top video Paul....Re: the hesitation....i was wondering whether one of the coils you fitted a while back could be a duffer...?
+Eric Gruntfuttock that's a possibility, and I will be looking into it, I brought a code reader over the weekend and will keep a regular check over the next few weeks for any fault codes, it may just need time to settle in with the new oxygen sensors, so I'm going to focus on getting the top mounts changed this coming weekend, then reassess this hesitation problem.
Why not use a penetrating oil, or coca-cola? Either would have helped break those sensors free. Coca-Cola actually works exceptionally well for seized bolts, or in this case, an old O2 sensor.
Well, it looks like back to the drawing board and replacing bits until it stops. Porsche was of no help?
+Desmond Sequerah no not really, I am surprised that changing 2 dead oxygen sensors has made no difference at all, but that's life, at least I now know there new!
Oh Paul, you do try your best....
WD40 is a water repellent. It is not ideal for a job like this. Plus Gas would be better.
A ratchet spanner is what you also need.
TROOPER88881, got to be honest tried plus gas a couple of times and it's just not up to the job,
👍👍