Having problems with your 1991 Chevrolet S-10 ?


\015 I recently changed the fuel pressure regulator on a 91 s10 with a fuel injected 4 cylinder.it fixed my rough idleing problem and ran like a champ. but a couple days later the check engine light came on and the fuel shuts off a idle,it runs good with my foot on the pedal.i keep hearing a beeping around the engine while it is running and when it shuts off you can hear the computer clicking for a few seconds.i know its not the filters and its not the fuel pump because it runs while giving it gas,maybe the iac valve ?will that cause it to stop the fuel from going through the injector\015 Posted / edited by AnonymousUser on : 10-06-2019

Answers :

Check the egr valve it sound to me that its stuck open and if this happens excessive exaust gases are flooding the intake or you might have a vacuum leak either one of these problems will make a high pitch sound
Repair Help & Product Troubleshooting for 1991 Chevrolet S-10

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