Stalling occasionally

40

Asked by Jun 25, 2017 at 02:12 PM about the 1999 Chevrolet Silverado 1500 3 Dr LT Extended Cab LB

Question type: Maintenance & Repair

I have a 1999 Chevy Silverado with a
5.3 liter Vortec and I have replaced the
fuel pump the fuel pressure regulator
the engine temperature coolant sensor
and it is stalling occasionally but it will
always start right back up I cannot
figure it out

11 Answers

71,985

Have you replaced the fuel filter and clean the throttle body?

40

I replaced the fuel filter I have not clean the throttle body although I have been putting injection cleaner and I need some seafoam to clean the intake

40

I meant I did put some seafoam in it and it seemed to help I'm just not sure why it keeps stalling I'm thinking maybe it might be the manifold absolute pressure sensor

1 of 1 people found this helpful.
71,985

If truck start,s right back up,you may just need a good cleaning at the throttle body.

71,985

Is engine light on by chance?

40

It's interesting that you asked that because ever since I replaced the fuel pump the security light check engine light and low fuel light flash and I believe that's it's the fuel sending because my gas gauge doesn't work now either I believe it's wired wrong would that affect the operation of motor?

1 of 1 people found this helpful.
40

Is there a particular product you would recommend for cleaning the throttle body?

71,985

The fuel sending unit would not affect the running of the truck,and if engine light is on it may not even be the throttle body that need,s cleaning,think you may find it to be a throttle position sensor or air control module issue,go have it scanned at your local auto part,s to no which one you may need.

40

well that is another issue in itself because I have a scanner but it will not connect to my computer nobody's scanner will connect to my computer I don't know I don't understand it

1 of 1 people found this helpful.
71,985

May have to have a dealer scann it,but most common gmc/chevy scanners will hook up.

40

Thanks for the input

1 of 1 people found this helpful.

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