91 V2500 Suburban, 5.7 TBI , intermittent Fuel delivery /

[Augirthedude]

My 91 Chevy Suburban refused to start after running all day. 1/2 a tank
Of fuel, hot day . It would start at first and run rough once in gear and got worse to the point of not starting at all. My 91 Chevy Suburban FSM does not list or include any of the information on the fuel system for the TBI fuel injection. It refers to “ Fuel and Emissions Service Manual” for specific-information.
Any body have a download of that publication?

I’m thinking fuel pump in failure mode .. ?


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[Vbb199]

My 91 Chevy Suburban refused to start after running all day. 1/2 a tank
Of fuel, hot day . It would start at first and run rough once in gear and got worse to the point of not starting at all. My 91 Chevy Suburban FSM does not list or include any of the information on the fuel system for the TBI fuel injection. It refers to “ Fuel and Emissions Service Manual” for specific-information.
Any body have a download of that publication?

I’m thinking fuel pump in failure mode .. ?


Sent from my iPhone using Tapatalk

Wouldn't be surprised if you have the same issue I have... Find my article here on my 90 r1500....
Unplug the MAP sensor next to the tbi unit and see if it runs fine (in park)
If it does, it's fuel pump not putting 9-13 lbs fuel pressure.

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[Vbb199]

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