The saga continues with my GT JTS idle and misfire. I started off cheap and got expensive with trying to solve my problems. I have a previous thread here
which documents my attempts. The last thing I did was had the injectors removed and cleaned. They had a good report before cleaning all coming out at low 90% if I remember correctly and after cleaning all 98-99%. After this I lost my will a bit and not sunk any more money into the car.
Anyway, we now have our first house including garage so I want to use it to get to the bottom of this and a new symptom has appeared (or seems to have) recently. On a few occasions when the car has been warm and restarted not long after stopping probably 5-10 minutes if I've called in somewhere. When I do come to restart the engine struggles it seems to initially fire up ok but then hangs on the very edge of stalling maybe 300-500rpm. I try and catch it with a throttle blip which it responds to ok but then will drop and struggle again but once I set off it seems to be fine.
I have two things I am tempted to try:
1) whip the lambdas out to check the condition of the 2 cats. If collapsed then spray something in it to try and clean it out a bit but not sure what. Is there any decarbon style cleaner? I know that would probably ruin the cats but if I know that's the fix I've got until the next MOT to source some replacements.
2) new crankshaft sensor
I have problems with both options:
1) I can't see an easy way of getting the lambdas out. I assume I'm going to have to get the heat shield off first but it all looks a bit tight for space and I don't have any ramps or axle stands to get underneath properly.
2) From a quick look it seems to be £80 for a replacement sensor for a JTS which is a bit more than I want to spend again for a possible fix.