Bugger!

 

Just got my ECU back from mr andy p with a nice new chip, installed it no probs and took her for a drive.

All was fine about half hour into my drive i pulled up at a car wash and let the lads set about there work and whilst they were spraying her an engine check light appeared.

I start to reverse out and my car stalls and will not turn back on, engines turning but would not fire, after a few minutes trying it started with the engine check light still on.

I pull out of the wash bay and park up so they can do the inside.

 

10 - 15 mins later the car is dry and clean so i get back in and fire her up no problem, (engine check light still on) and start to drive home so i can fiqure out the problem.

The car is idling high about 1300RPM

Everytime i touch the throttle lightly the revs drop to a near stall, if i touch the throttle heavy it revs fine.

 

I pull over a few yards from the car wash and notice that if i put just the ignition on i can hear the sound of the fan but the fan doesn't spin (didn't used to do that) but when i fire her up it spins.

I also notice that everything sounds louder, exhaust, revs, everything...

I looked around the engine and nothing seemed out of place, no oil, water, no loose connections nothing.

 

I start to drive home and it starts no problem (engine light still on) and notice that it feels like its holding back, still droping the revs whenever i press lightly on the throttle and whenever i let off the pedal.

I try to give her a boot to see if she'd boost and she wont go past 7psi (ish) and wont go above about 4-5k RPM.

When i tryed to get higher it developed a missfire so i backed off.

 

Got home and left it for 10mins, went back to her and now she wont even start, just turns and splutters...

 

Its a early 92 JSPEC Auto TT, with what i believe to be a UK ecu

 

Edit - Skip to Post 45

Edited September 13, 200817 yr by petes21st

There won't be any error code because the LED is on permenant but only when the problem occurs. This can only be ECU/Chip problem or at very least wiring to/from ECU, however i doubt it personally.

The only sure way to know is plug in another ECU chipped or not it don't matter and run it for either a few days or if the problem occurrs again, which ever is the sooner.

It's an intermittent fault which seems to happen every couple of days or so.

If it was the ECU temp Sensor, car would run like a bag of pooo with the extra fuel constantly being dumped into the engine to what it thinks, cool things down.

smithy

I've run the ECU in my car and it's perfectly fine. ECUs don't have intermittent problems, it has to be the wiring somewhere.

pm sent

this is very similar to the problems i have.

I just keep unbolting it (ecu) and fitting again intill my conzult (laptop on pass seat) notices it ie: red light out.

Thats why i want to try and help but dont know the answer. I was told to arm and un arm alarm so dont know if thats anything to do with it.

I changed a chip last weekend and it took me 3 hrs intill i had it right ie: no light on and no error codes (and no aux fan)

It does my head in why, just sharing incase it helps in some way.

Sum up:

 

Andy P rechecked the ECU and found some dry joints which he resoldered (not attached to the chip) and i recieved it back and have had no problems since :)

glad u got this sorted bud