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Thought I'd let you all know what is going on now.
Timing chain still not fixed. Credit card company want a report doing. The independent Porsche specialist has badly let me down. Been chasing him since May to provide this and there has been nothing back from him. Got a quote from another specialist who stated £4250 for all works.
Gulp!
Hope the credit card company pay oro but I'm starting to lose hope.
Had a bit of work done. In the process it was discovered that the cam sensors had been disconnected. Weird!
Then a few weeks ago the prop shaft bearing went. Bought a £17 special and paid a local garage £100 to fit.
OMG my car drives totally differently.
Yes, P1009 comes up now and then but the total lack of judder is wonderful.
It's not perfect. When in the wrong grea it is a kangaroo slightly but on the whole it's much better.
The PSM is hyper sensitive and so I have to turn it off for the first 500 yards then it's fine to turn back in.
I replaced a tyre without fixing the suspension and guess that's what's screwed it.
Thanks for letting us know, it seems you got your car much more drivable now. Did you do the "cam sensors" work yourself? Which part was screwed after you "replaced a tyre without fixing the suspension"? I got my 4 tires changed at Costco but they didn't touch suspension, i think.
I'm also experiencing this misfire with my '05 base. I'm at 150k and I think I'm still on the original coils, so I'm going to start there. I ordered a set of Denso coils from Pelican for $180, they should be here today.
I've literally never heard of a timing chain problem with the VR6 motor before, so I'm skeptical, but I'll keep an eye on this thread for updates.
I didn't do the cam sensors. Basically, I took the car into an indie Porsche place and asked them to investigate the misfire. They took a few bits apart and in the process saw that the cam sensors had been unplugged and not plugged back in. They guessed that it was possibly linked to the timing chain issue - someone trying to hide a problem with a problem. I've noticed no difference in the car with them plugged back in.
As for the tyres, I had a screw in one of them so I bought a replacement tyre and had it fitted. As soon as I drove away the PSM kicked in and the car juddered and the PSM light flashed. I tried swapping wheels over but that didn't work.
I read somewhere that you have to lock the suspension (I have air suspension) before lifting the car and I failed to do that.
The indie Porsche guy told me that you have to replace tyres in pairs or all 4 at once because differences of just a millimetre or two can trigger the PSM. I've no idea if this is true.
Another garage has plugged the car in and they can find no stored faults so couldn't do anything. But it is hyper-sensitive. I have a roundabout near the end of my road and if I fail to switch off the PSM then it triggers as I go around the roundabout and that's flipping dangerous because the cars behind are not expecting me to suddenly slow down at that point.
Any idea how I can lower the sensitivity of the PSM or get it recalibrated?
i think your tire change might cause the air suspension problem since it was not set to "workshop" mode beforehand. The dealer or someone who works a lot on Porsche should know how to re-calibrate it.
This P1009 code...... could it be a lambda/oxygen sensor problem? I know they the MAF is new, but wonder if a sensor is dirty or on the way out it would cause a misfire....?
I replaced my coils today, took about 20 minutes. Everything seemed immediately better with the motor: It started quicker, it idled smoother. I drove 9 miles into work (35mph top speed) and no CEL, no hesitation, no miss. At this point I'm thinking the coils were the culprit. Looking at them, it's easy to understand why.
I replaced mine a few months ago. I wish that was the problem....
The mechanic said that when he had part of the engine exposed he lined the cams up and checked the position of the timing gears. He said that it showed that the timing was slightly retarded.
Another poster on here said he's never heard of the 3.2 litre getting worn/stretched timing chains.
I'm in the dark and about to be spending a load of money on timing chain replacement if that's genuinely what the problem is.
You and I had exactly the same symptoms, and mine appear to have cleared after changing coils. (Admittedly, I've only gone 9 miles at street speeds, but that was more than enough to get the misfire before.) You say you replaced the coils recently, but someone asked about the wires and you never responded.
Before you spend big money to have the motor pulled apart, check the resistance on the wires from the ECU to the coils. Or get a new wire and start swapping it in.
I never checked the wires in the footwell. I asked the indie garage to do it and they said it would be a waste of money. They'd looked inside the engine and saw that the system was retarded.
I've replaced the spark plug and the coil pack again in cylinder 6 (the one that always comes up in my OBD reader) and it had consistently kept misfiring.
The indie engineer showed me a live readout from the engine which showed all cylinders misfiring, but 6 was the biggest rate of misfire. Strangely, at 3000rpm all misfires disappeared. I saw myself on the readout every cylinder reading 0 for misfires at a consistent 3000rpm.
The MAF is new. Coil packs are new. P1009 comes up regularly which, I'm told, is the timing chain. I'm just wondering if it may be the lambda/oxygen sensors which are giving a bad reading to ECU which is then sending a wrong fuel air mix to the cylinders.
i agree with Shawn... On my other car i had someone replace the coils for me but they used some ****ty ones so the symptoms persisted... until i bought new genuine coils and replaced them myself.
07-25-2018, 10:44 AM
Update
