Suburban not getting fuel

[DieselROCKS]

Hey gang

88 Suburban 350 TBI quite running recently, not getting fuel. Pulled the fuel line off the carb, key on, no pumping. Bought a new pump, then looked in the hanes manual, says I have an ECU and nothing on troubleshooting the thing.

fawk.

I've searched, only found Will a TBI fit in my LC?

Hanes says there's a fuel pump test port under the dash but nothing on how to use it. Check engine light has flickered in the past but it hasn't showed up recently. Did the same thing in the summer once, pulled the fuel line, no fuel. 1/2 hour late it fired up.

Troubleshooting advice, sensors that can tell the ecu to cut fuel...I really don't want to pull the fuel tank if I don't have to

Cheers
Geoff

 

[fsusteve]

They're notorious for bad fuel pumps, so you know what that means. You can make a wire jumper for the ECU readout, I have to look up how or you can PM Gumby, he's got mad chebby skillz....

 

[Isotel]

maybe the fuel pump relay is dieing.. Its usualy mounted to the firewall

 

[RVBtruck]

Sounds to me like either a relay for the pump or the pump itself. ECM isn't a common problem for that, but can't really rule it out. you can jump the relay and run the pump see if you have fuel.

 

[DieselROCKS]

Found the diagnostic readout info with the paper clip
Thanks for the tips guys

Heading out to the farm tomorrow

Cheers
Geoff

 

[DieselROCKS]

Yup, fuel pump was shot.

Pulling the tank wasn't as bad as I thought it would be. I would have thought everythig would be rustier. Had it running in a few hours.

Cheers
Geoff