Surges and shuts off

1987 CHEVROLET CELEBRITY
207,000 MILES • 2.5L • 4 CYL • 2WD • AUTOMATIC
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DAVID MCCRACKEN2
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Car surges and shuts off at idle. if you put it in gear and give it gas it shuts off. if it's in park and give it gas it will shut off. I have replace the fuel pump a week ago and since then I have replaced the mass airflow sensor, the mat sensor, the coolant temperature sensor, throttle position sensor. I have checked the fuel regulator diaphragm, but I don't know how to check fuel pressure. can you tell me how to check for fuel pressure or any other suggestions that I need to check?
Oct 12, 2019 at 12:28 PM
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KASEKENNY
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Hi,

This does sound like a fuel issue so checking fuel pressure is a good idea.

However, we have other sensors that need to be looked at starting with the throttle position sensor. Also, check and make sure the throttle bore is clean.

I attached a few guides that need to be run through to see if we can identify the issue.

Let me know what happens. Thanks

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

https://www.2carpros.com/articles/stall-at-idle

https://www.2carpros.com/articles/throttle-actuator-service

https://www.2carpros.com/articles/engine-surges
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Oct 14, 2019 at 3:28 PM