91 grand am no fuel to carb once warmed

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wolfie

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1991 grand am 2.5L Once car warms up, no fuel going into carb until it cools down. I have replaced the fuel filter and pump. Also IAC and collant temp sensor along with some vac hoses. Could a bad Ignition Control Module cause this issue also once the engine warms up?

This issue can be replicated everytime, after running about 13-15 mins at idle, it just dies
 
I assume you mean throttle body, did you do a fuel pressure test? Did you check the fuel pressure regulator?
 
melsg5 said:
I assume you mean throttle body, did you do a fuel pressure test? Did you check the fuel pressure regulator?
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Yes sorry to the throttle body. A neighbor of mine pulled the fuel line, nothing going to the throttle body. If you are think fuel pressure regulator, would it only cause this problem once the engine is hot?
 
I'm not telling you to replace the regulator, just check the pressure at the regulator and make sure the vacuum line doesnt have gas in it which would indicate a bad regulator. You have to work your way back from the throttle body and that would be the regulator which may be shutting down when hot.
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Should I check the pressure when the engine is cold? Or after it is warmed up and stalls?
Sorry for all these questions but thank you so much
 
Ok, can i find a pressure tester at harbor freight?I only see fuel injector pressure testers. I see what looks to me one at auto zone, but i dont realltywanna spend $50.00
Damn $20.00 part LOL
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ok, from what i was reading, easiest way to check the fuel pressure regulator after it stalls to is pull the vacuum hose, this should then increase the fuel pressure to the TBI, so in sense it should make fuel flow to the injector with the increased pressure..... right???? So I am guessing, if it gets fuel after it stalls then it would be a faulty regulator???
 
One of the requirements to being a successful shade tree/DIY mechanic is the need for proper tools. These tools can last a life time if properly maintained and can potentially save you well over 10 times their cost.

I just did a search for fuel pressure gauges and found a number of them ranging from $30 - 40.

Now, your original post mentions;
wolfie said:
I have replaced the fuel filter and pump. Also IAC and collant temp sensor along with some vac hoses.
Click to expand...

Were these things replaced in the attempt to fix this current problem or were they replaced because they actually required it due to failure, regular maintenance or wear?

If you are replacing parts right and left because you think they may be the cause of your problem then I can see where you are worried about funds here because you can run up quite a bill fixing things that may not need fixing. I know, I've done that in the past.

You need to properly diagnose the problem so that you can fix it with minimal cost and effort. Testing the fuel pressure at the rail is one step of that diagnosis.

Checking the pressure regulator as Mel has suggested is another step.
 
I replaced the IAC because it was throwing code 35. THe coolant temp sensor was original to car and corroded near the connector, so yes these were due to failure and or regular maintenance, along with the two vacuum hose that were pretty dried out and the gasket between the air housing and Throttle body.

Where do i check the rail pressure, before it so into the throttle body? How about the pressure of the fuel regulator, would be the same place?

Once the car gets hot there seems to be no fuel coming out of the injector into the throttle body.
 
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