Pots suddenly jumped & are staying there
Discussion
I'd just about got it running perfectly after much fiddling with the air flow meter & was doing one final check, the adaptive were both down at about -10 so I was just given the pots slight tweak, only wanting 1 or 2% change. The pots had been acting a bit odd giving a few % different readings when the engine was running to next second when it was off. But I was getting on fine just using the reading from when the engine was running.
I when to start it, it fired up fine then as I got out it cut out, I looked at the pots display & they had both jumped from about 17 to 62. They were both reading independently still & I could make the slight differences jump between pots by disconnecting them in turn , but they both are now staying at 62. I've got a different chip with a different map on it. I didn't think it would help much but tried swapping that, the pots cam back at 40 odd then started climbing with out me touching anything.
I think the ECU needs to go back to MBE - any one think it could be something else?
I when to start it, it fired up fine then as I got out it cut out, I looked at the pots display & they had both jumped from about 17 to 62. They were both reading independently still & I could make the slight differences jump between pots by disconnecting them in turn , but they both are now staying at 62. I've got a different chip with a different map on it. I didn't think it would help much but tried swapping that, the pots cam back at 40 odd then started climbing with out me touching anything.
I think the ECU needs to go back to MBE - any one think it could be something else?
I should try everything before posting!
I disconnected the ECU to take it back to the house so I had the SN to ring MBE (seems they have a 10 day wait at the mo so that would have put pay to the TVRCC 50th at the weekend)
Put it back after for one last try & the pots are reading normally again. I guess it must have been a bad connection to the ECU, they look fine, nice & clean really. Fills me with confidence for the weekend!
I disconnected the ECU to take it back to the house so I had the SN to ring MBE (seems they have a 10 day wait at the mo so that would have put pay to the TVRCC 50th at the weekend)
Put it back after for one last try & the pots are reading normally again. I guess it must have been a bad connection to the ECU, they look fine, nice & clean really. Fills me with confidence for the weekend!
The car has been standing for a long time so I would expect these sort of things to pop up now and again till she gets fully back up and running.
dirty and damp connectors and the like cause all kinds of things, my cars favorite little trick to show her disdain at having been left for a while is to just cut out, does it a few times and then works fine again till I leave her again for a few weeks.
dirty and damp connectors and the like cause all kinds of things, my cars favorite little trick to show her disdain at having been left for a while is to just cut out, does it a few times and then works fine again till I leave her again for a few weeks.
gruffalo said:
The car has been standing for a long time so I would expect these sort of things to pop up now and again till she gets fully back up and running.
dirty and damp connectors and the like cause all kinds of things, my cars favorite little trick to show her disdain at having been left for a while is to just cut out, does it a few times and then works fine again till I leave her again for a few weeks.
Yes the ECU was unplugged & left in the car for a good couple of years while I did the chassis work, the connections looked perfectly clean but still as you say there could still be some dirt there. I've given them a clean again & it's not done it again, so far! dirty and damp connectors and the like cause all kinds of things, my cars favorite little trick to show her disdain at having been left for a while is to just cut out, does it a few times and then works fine again till I leave her again for a few weeks.
However it does make me think twice about getting the standard ECU remapped, there was a sharp intake of breath from the guy at MBE when I told him which ECU it was, he said the lots of the parts for it now were obsolete so they were happy to look at it but but there would have been a good chance they couldn't do anything with it
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