Hi thanks for that. im still struggling with this. i'v now got it to run at 1200rpm and the same thing happens. Yeah im starting to think it can't be any of those things. The temp sensor works but it barely moves because it cuts out before it reaches temperature. I'll have a look at the two sensors that would make sense if they not working.
so when car is in 'broken' mode it won't restart at all even if my foot is on the throttle. it just tries to start but doesn't until 10-15 mins later when its cooled down.
Okay I'll have a look at the idle speed and see if that does anything.
Iv disconnected the air flow meter and the car just cuts out straight away. the flue pump carries on running after the car dies then it turns off after a few seconds then when i turn the key with a hose on the fuel rail I got fuel coming out and I can hear the fuel pump priming.
Iv checked all connects on the air intake and they were all tight and I checked the condition of the air intake and I couldn't see any cracks or anything like that.
The other thing is its actually idling at 800rpm so like you said if its meant to be 1200 that's massively low. any tips on timing? starting to not trust garages after they've had the car for 2 months and im still in the same situation.
So when it gets hot the revs drop if I push the throttle the response drops massively then it just cuts out even with the throttle fully down the revs don't pick up and if just dies and will not start until its cooled down. I was told the compression test was done cold and hot (well as hot as they could get it)
Do you know what tests the garages did on your car? Could be a couple of things, neither of which would be an ECU, if they're dead, the car just wouldn't fire in the first place.
First thing I'd do is a compression test, I've had it in the past where a car would start when cold, but when the car warms up, the tolerances open up and then the compression drops to where it couldn't fire. It also could easily be the timing/idle is not set up correctly.
Where abouts are you based? Maybe you're close to a decent garage who can diagnose it properly.
Yeah I couldn't see how it was the ECU but both garages said the same thing. so thought I would try it. The garages did a compression test, sorted out the timing, iv had new leads, spark plugs, new fuel pump filter etc. It runs at 900 revs until it gets warmed up. Im based in Norwich one of the garages was a vw approved place but like Eddy said if the garages can't plug the car in they struggle now.
Iv got an '89 golf gti 8v with an issue. Basically it starts up fine and runs perfectly until it gets up to temperature then the throttle response drops and eventually it cuts out completely and won't start again until it has cooled down. I'v taken it to a couple of garages and they come back with the ECU is faulty so ordered one and its the same problem. Any help will be massively appreciated.
