88 350 will start won't run - The 1947 - Present Chevrolet & GMC Truck Message Board Network

89chevsj · 07-13-2012, 03:00 AM

Engine will not idle, to keep it running i will lightly push the gas and it will fluctuate up and down, almost dying when it drops down. when given full throttle it will starve for fuel and die. heres the list of new parts ive put in.
coolant temp sensor
fuel injectors
fuel filter
cap
rotor
wires
plugs
fuel pressure regulator
TPS
I have to believe this is a low fuel pressure issue, could my pump be weak? I didn't think an electric fuel pump could go "bad" I thought it either works or it don't. any help much appreciated.

mountie · 07-13-2012, 08:24 AM

Your problem sounds just like when my fuel pump died.

ChevyTech · 07-13-2012, 09:12 AM

Quote:

Originally Posted by 89chevsj

I have to believe this is a low fuel pressure issue, could my pump be weak? I didn't think an electric fuel pump could go "bad" I thought it either works or it don't. any help much appreciated.

The pumps do sometimes just stop, but it is more common for the pump to run but not be able to produce enough pressure.

It sounds like low fuel pressure to me.

As these truck get old, the hose in the tank between the pump and the sending unit is becoming a common failure point too.

The pressure should be tested with the engine running. There is a link to testing information in the FAQs sticky at the top of the board.

89chevsj · 07-18-2012, 01:38 AM

Yep, it was a fuel pump, thanks guys!

07-13-2012, 03:00 AM	#1
89chevsj error 404 Join Date: Oct 2010 Location: soldotna alaska Posts: 1,252	88 350 will start won't run Engine will not idle, to keep it running i will lightly push the gas and it will fluctuate up and down, almost dying when it drops down. when given full throttle it will starve for fuel and die. heres the list of new parts ive put in. coolant temp sensor fuel injectors fuel filter cap rotor wires plugs fuel pressure regulator TPS I have to believe this is a low fuel pressure issue, could my pump be weak? I didn't think an electric fuel pump could go "bad" I thought it either works or it don't. any help much appreciated. __________________ 89 Chevy swb 350 "SJ" DD turned parts truck. SOLD 90 Chevy ext cab loooongbed. "storm trooper" Rust In Peace. 06 Kia sorento wife's car 06 charger srt8 "lucifer" my toy '12 Kia optima

07-13-2012, 08:24 AM	#2
mountie Registered User Join Date: Jun 2011 Location: Bradenton, Fla. Posts: 1,100	Re: 88 350 will start won't run Your problem sounds just like when my fuel pump died.

07-18-2012, 01:38 AM	#4
89chevsj error 404 Join Date: Oct 2010 Location: soldotna alaska Posts: 1,252	Re: 88 350 will start won't run Yep, it was a fuel pump, thanks guys! __________________ 89 Chevy swb 350 "SJ" DD turned parts truck. SOLD 90 Chevy ext cab loooongbed. "storm trooper" Rust In Peace. 06 Kia sorento wife's car 06 charger srt8 "lucifer" my toy '12 Kia optima



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