My daughter has a 91 grand am, car starts up fine when engine cold, but once car gets warm it will either stall or if parked will not start again till cold. Pretty sure it is electrical car seems to lose spark when warm. Could it be ECM and how do you replace that?
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Re: will not start when engine warm
Sounds more like your ignition module is getting hot and not working. I'd go there first before replacing the ECM. You can remove the ignition module and most NAPA stores have the ability to test them for you. Make sure they test it at least 5 times. This way it'll simulate starting and stopping.
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My car runs good when it's cold but stalls once it warms up? ... In this situation, you can usually re-start the engine once it has hada chance to cool back ... it'll fill-up and exits fuel right up and out the vent tube which dumps it down the middle of ...
I had a similar problem with a Ford Excursion, it turned out to be intake manifold gaskets. It would stall then start right up again, it ran fine during warm up. But, once fully warmed up it would stall at stop lights and stuff like that. I did get a check engine light, the code was lean condition. I don't know on a Jeep, sorry I can't be of more help.
hi, this problem to me sounds like the oxygen sensor needs replacing as when the vehicle is first started or from cold you will find it starts with no problems but once its up to temperature then you start getting problems. This is due to the oxygen sensor(lambda sensor as its proper name) not working when the engine is cold it only starts working when the engine is up to temp so if this is when your getting the problems then this is what i would look at first.
Let me know how you get on or if you need further assistance ok
You need to check components again when the engine is hot and in no-start condition, otherwise, you will get bad info...obviously whichever part is doing this works fine cold. ones that react most to heat are crank pickup, ignition coil and the fuel pump.(bad ones get hot and bind up)