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Strange problem with low glowing check eng light
Posted: Tue May 08, 2018 5:07 pm
by Charlescrown
Hope someone might be able to help. I went on a 5 week holiday and when I got back the car needed a new battery. Now the car starts, runs till it warms up then won't idle. I am running 12P with a tune that is not using IAC. 12P says all is OK with codes and the data seems to look OK to me but the funny thing is the check engine light starts off bright till you start the car but glows a very dim light after that. Any advice is appreciated.
Re: Strange problem with low glowing check eng light
Posted: Tue May 08, 2018 5:46 pm
by Gareth
Failing ECU is often the cause of the engine light glow.
Re: Strange problem with low glowing check eng light
Posted: Tue May 08, 2018 7:42 pm
by pman92
It doesn't happen to be an LED engine light?
Mine glowed very dimly when turned off. Must of been small amount of current flow into ecu.
Resistor over the led to drop the voltage difference fixed the problem
Re: Strange problem with low glowing check eng light
Posted: Wed May 09, 2018 7:57 am
by Charlescrown
Yes it is LED but the thing is it went out before and I have another car also with the same setup and it goes out. I have plenty of spare ECU's so I'll swap it today and see if that fixes it.
Re: Strange problem with low glowing check eng light
Posted: Wed May 09, 2018 12:41 pm
by Charlescrown
Can anyone have a look at this log and advise me whats happening. Loo at the 15 second point where the injector BPW was a happy 1.4ms and suddenly drops to 0.05ms. This is a 12P log.
Re: Strange problem with low glowing check eng light
Posted: Wed May 09, 2018 2:43 pm
by Charlescrown
Just thought you'll also need the ADX