it was just switching the lambda probe. I think it should switch around 1-2 times a second if the ECU is doing its thing to keep the catalyst functioning correctly . Not that I could verify this as I did not have a good signal reference. On my car I had already had 2 catalysts the cam timing checked new lambda probe new down tube recon injectors injector cleaner a tank full of Optimax plus the fiat
Originally Posted by bravo80SX It could be the sensor in the MOT the result was something like 1.001 and the max for the test was 1.030 whereas with the other emissions test the results were no where near the maximum When I first saw the car with the exhaust snapped the light was on all the time once it was welded the light went off and now that its blowing like mad its come back on so yeah weird stuff.
Panic not lots of cars have a separate threaded hole in the exhaust before the cat so fiat could bung a probe in for diagnostics. Chances are the lambda sensor is still plugged in and working especially if the cars running ok and getting sensible mpg.
Well fiat at Slough put the car on the ramp this morning and Im glad to say that the lambda sensor is fitted and working well. The lambda probe exhaust entry point is WELL up the down pipe right next to the block.The miscreant hole in question WAS indeed the inspectionprobe hole 3 inches in fron tof the catalytic convertor and they tell me there is no need to de-weld the hole. If it holds all will be well. Really pleased as wasnt looking forward to costly repairs
The timing belt is new and the tensioner too(i bought a cambelt kit). I checked the new belt and its the same size as the old one(size and number of teeth are same).Tried to fit back the old belt just for checking and the result was the same S My friend will bring a dial gauge at the end of the week to make sure about TDC so will see. When the oil light flickers the idle is about 800-850 so i rule
Did he try another lead in this coil in other words say it is No1 not working did he take off No2 lead plug No 2 lead into No1 coil plug and try for a spark to make sure it was not just No1 lead having a break in it I think someone else said the same thing on this thread it is not very often these coils lose one cylinder they seem to lose 2 i.e 1 and 3 or 2 and 4 I think that is how the bank works