Trouble starting when engine is warm

[trevor217]

I just found this forum last night and spent almost 5 hours reading all the great info here. Anyway, I have an 89 turbo mk3 that has an odd problem when starting the engine after the car's been warmed up. I've seen it documented on a couple threads here, but nobody had a conclusive answer.

Here goes: If I drive for a 1/2 hour or so, stop at a convenience store and shut off engine, when I come back a minute later and start it it idles around 500 rpm or so, fluctuates a bit, and sometimes(about 50% of the time) stalls out. If I put the car into gear and begin driving, the idle problem seems to disappear. It doesn't do this on cold starts--it only happens when the engine is warm. I saw all kinds of suggestions in the other threads, spark plugs/wires/distributor...there's a lot of suggestions, but it seemed that none of them worked for the people that were experiencing the same problem I am. Anyone know what causes this and are there any fixes for it?

Thanks!
Trevor

[jc-supra-90]

I would look at replacing your coolant sensor, they are very inexpensive and will probably fix your problem

[trevor217]

Thanks for the suggestion! I will give that a try and report back with results.
I was starting to get nervous that nobody was going to respond!

Happy holidays,
Trevor

[CyFi6]

i have the same issue and i posted on the other board about it, they just reccomended that i change the wires and cap/rotor and they also said that it could be the fuel rail heatsoaking and essentially "spraying out vapors" instead of fuel for a minuet/

[cyanide-is-a-way-out]

ya i would say it is heatsok thats the main problem i feel