lewis2000boxster Posted November 28, 2023 Report Share Posted November 28, 2023 Hello all, I am at the end of my tether with my car so this is my last resort before taking it into a Porsche garage or driving it off a cliff. The car: 2000 Boxster 986 manual 2.7 (e-gas version) So the car starts fine, drives fine, but once its warm will struggle to idle and ultimately stall. There is no loss in power during driving, I drove it for 2 hours on the motorway no problem. But as soon as I stop at some lights (and put my foot on the clutch) it stalls, it will start again but I need to keep my foot on the throttle to keep it from stalling. It does seem to be getting worse as it used to last longer hunting at idle (going down to 200rpm before catching itself) but now stalls after a few seconds. I have tried: changing coil packs, changing spark plugs, changing MAF sensor, cleaning the throttle body, checking for vacuum leaks (fixed a small one) and re setting the e-gas throttle position. I then bought a Foxwell NT510 elite diagnostic scanner (£120 eBay) to get some fault codes. Here they are: P1341 - Inlet camshaft, bank 1 PO112 - intake air temperature sensor P0103 - hot film MAF sensor P0197 - oil temperature The MAF code makes sense as I replaced it recently and tested it by unplugging while running before that. The oil and air temp sensor readings don't make sense to me. But the most worrying is the camshaft fault, a quick search suggests it could be the variocam solenoid which is not an easy job. I did clear the codes and run the car, it was running quite rough on idle (but only for 5mins, it didn't get up to temperature which is when it usually stalls), I then checked for codes again and there were non? But I assume that's because I hadn't got the car up to temperature Any help is much appreciated, I did speak to the local Porsche garage which quoted me £225 per hour to have a look, and a 3 month waiting list. Thankyou in advance. Lewis Quote Link to comment Share on other sites More sharing options...
½cwt Posted November 28, 2023 Report Share Posted November 28, 2023 Variocam solenoid on bank 1. Quote Link to comment Share on other sites More sharing options...
½cwt Posted November 28, 2023 Report Share Posted November 28, 2023 Or cam position sensor. Quote Link to comment Share on other sites More sharing options...
iborguk Posted November 28, 2023 Report Share Posted November 28, 2023 @lewis2000boxster Welcome and sorry to hear of your issues. Whereabouts are you based - someone might be able to recommend a good Indy ? Quote Link to comment Share on other sites More sharing options...
Nobbie Posted November 28, 2023 Report Share Posted November 28, 2023 Is yours fitted with an idle speed control valve like this. https://www.ebay.co.uk/itm/305270425566?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=qnkst-znqde&sssrc=4429486&ssuid=bm3GNDcwRm6&var=&widget_ver=artemis&media=COPY seems like an obvious candidate for a fault. Quote Link to comment Share on other sites More sharing options...
lewis2000boxster Posted November 28, 2023 Author Report Share Posted November 28, 2023 1 hour ago, iborguk said: @lewis2000boxster Welcome and sorry to hear of your issues. Whereabouts are you based - someone might be able to recommend a good Indy ? Hi all thanks for all of the replies! I am based in Wirral in the north west, a good indy recommendation would be great as I haven't found any good ones in this area 1 hour ago, Nobbie said: Is yours fitted with an idle speed control valve like this. https://www.ebay.co.uk/itm/305270425566?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=qnkst-znqde&sssrc=4429486&ssuid=bm3GNDcwRm6&var=&widget_ver=artemis&media=COPY seems like an obvious candidate for a fault. I don't think I have one like that as it is the e-gas throttle bottle version. I may take it apart at some point anyway though and see if it is indeed a idle valve issue. As others have mentioned I am beginning to think it's the cam solenoid which unfortunately I don't think I could do myself on my driveway! Quote Link to comment Share on other sites More sharing options...
iborguk Posted November 28, 2023 Report Share Posted November 28, 2023 No experience of them but starting suggestion ... https://www.ocdporsche.org.uk 1 Quote Link to comment Share on other sites More sharing options...
BBB Posted November 28, 2023 Report Share Posted November 28, 2023 Hi there. I’m Wirral based too and have used OCD Porsche for some coding and also my coolant lines at the front. They are very friendly and helpful so well worth asking them. 2 Quote Link to comment Share on other sites More sharing options...
Paul P Posted November 28, 2023 Report Share Posted November 28, 2023 5 hours ago, lewis2000boxster said: Hello all, I am at the end of my tether with my car so this is my last resort before taking it into a Porsche garage or driving it off a cliff. The car: 2000 Boxster 986 manual 2.7 (e-gas version) So the car starts fine, drives fine, but once its warm will struggle to idle and ultimately stall. There is no loss in power during driving, I drove it for 2 hours on the motorway no problem. But as soon as I stop at some lights (and put my foot on the clutch) it stalls, it will start again but I need to keep my foot on the throttle to keep it from stalling. It does seem to be getting worse as it used to last longer hunting at idle (going down to 200rpm before catching itself) but now stalls after a few seconds. I have tried: changing coil packs, changing spark plugs, changing MAF sensor, cleaning the throttle body, checking for vacuum leaks (fixed a small one) and re setting the e-gas throttle position. I then bought a Foxwell NT510 elite diagnostic scanner (£120 eBay) to get some fault codes. Here they are: P1341 - Inlet camshaft, bank 1 PO112 - intake air temperature sensor P0103 - hot film MAF sensor P0197 - oil temperature The MAF code makes sense as I replaced it recently and tested it by unplugging while running before that. The oil and air temp sensor readings don't make sense to me. But the most worrying is the camshaft fault, a quick search suggests it could be the variocam solenoid which is not an easy job. I did clear the codes and run the car, it was running quite rough on idle (but only for 5mins, it didn't get up to temperature which is when it usually stalls), I then checked for codes again and there were non? But I assume that's because I hadn't got the car up to temperature Any help is much appreciated, I did speak to the local Porsche garage which quoted me £225 per hour to have a look, and a 3 month waiting list. Thankyou in advance. Lewis Welcome and as per others - sorry to hear of the issues. Clearing historic codes is a great place to start - you now have a baseline. You need to "make it happen" again and see what (if any) codes get registered - codes will only register if the car thinks something is wrong - so a sensor giving an odd reading wont trigger a code if the car doesn't see any anomaly ( for example, if a sensor reads a temp and the temp says -5 deg C - then the car will believe it - even if its +20 in reality - the car would only log a code if the sensor wasn't reading anything ....) Caveat - i am not familiar with the setup on the 986 - but assuming you have a throttle position sensor somewhere ( if its e-gas I assume "fly by wire") So - I would suggest - go again, make it happen, check codes, if no codes, have a look at live readings for throttle position sensor ( however that is reported ) if the car is "happy" with your foot on the pedal - then you have to suspect it is not registering correctly - see if that value changes smoothly in relation to actual movement on the pedal. After that - guess again - but some live readings might give others some clues Quote Link to comment Share on other sites More sharing options...
BBB Posted November 28, 2023 Report Share Posted November 28, 2023 This video suggests an Italian tune up may help. Quote Link to comment Share on other sites More sharing options...
Paul chocks Posted November 28, 2023 Report Share Posted November 28, 2023 A failed Crankshaft Position Sensor gives similar characteristics, which tend to lead to not being able to start a warm engine. Don’t think a CPS gives error codes Quote Link to comment Share on other sites More sharing options...
lewis2000boxster Posted December 18, 2023 Author Report Share Posted December 18, 2023 On 11/28/2023 at 8:02 PM, BBB said: This video suggests an Italian tune up may help. BBB - you are my hero. After watching the video I was pretty pessimistic but though I'd give it a go anyway. I basically drove the car like I'd stole it for a good 20-30 mins. And lo and behold, it wasn't stalling at idle, still a little rough but it was a start. I then took it out again (drove it to an MOT station) again lots of revs, and the idle again improved. It passed the emissions test which I am taking as a bill of health. I am ecstatic this worked, especially after the trouble I have gone through with changing parts, etc. I assume what's happened is due to the car being stood for a long time and me not driving it enthusiastically enough when I do drive it. I think the variocam solenoid has stuck in a slightly too aggressive cam position, leading to poor idling/stalling. It just needed a bit of encouragement to get the solenoid moving again, I will keep a close eye on it. Anyway, thanks again for all of the input, there's a great community on here. Thanks, Lewis 2 Quote Link to comment Share on other sites More sharing options...
BBB Posted December 18, 2023 Report Share Posted December 18, 2023 Glad you seem to have solved it. These cars do seem to prefer being spanked regularly. 1 Quote Link to comment Share on other sites More sharing options...
nelmo Posted December 18, 2023 Report Share Posted December 18, 2023 7 hours ago, BBB said: Glad you seem to have solved it. These cars do seem to prefer being spanked regularly. All cars do, which is why a low mileage is not always a good thing... Quote Link to comment Share on other sites More sharing options...
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