How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Amedee Your Own Question
Amedee, GMC Technician
Category: GMC
Satisfied Customers: 24116
Experience:  ASE Technician advanced level specialist
Type Your GMC Question Here...
Amedee is online now
A new question is answered every 9 seconds

Gmc sierra: I have a 1991 gmc starts right up runs few

Customer Question

I have a 1991 gmc starts right up runs for a few minutes then dies replaced fuel pump and fuel relay still does the same thing
Submitted: 6 months ago.
Category: GMC
Expert:  Amedee replied 6 months ago.
Hello and welcome! My name is ***** ***** I can assist you with your question. Does the engine start right back up when it stalls out or does it take some time before it starts up again? What is the fuel pressure at when this happens? What size engine do you have?
Customer: replied 6 months ago.
don't know fuel pressure have a 350 ci and it starts right up again
Expert:  Amedee replied 6 months ago.
If the engine starts right up when this happens, and it just stalls out at lower engine rpm, then I suspect either an idle issue (possible vacuum leak), bad TPS, MAP or idle air control valve. If the problem happens at all engine rpms, then it could be a bad pickup inside the distributor (which is very common). You will want to ensure that the fuel pump has power when this happens before replacing anything.
Expert:  Amedee replied 6 months ago.
I am glad I can help! It has been a pleasure working with you. Please dont forget to honor your good faith deposit by rating my answer as "Excellent Service" for assisting you today. Please let me know if you have any further questions.

Related GMC Questions