1989 chevy silverado 1500

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zackaryikerd

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Hi I have an 89 chevy and I can't seem to figure out a problem I was hoping I could get help with, the truck starts and idles just fine only problem is when I put It in any gear and give it gas It dies. I've replaced fuel pump fuel lines fuel injectors vehicle speed sensor o2 sensor distributor cap and button sparkplugs and wires ignition coil ignition control module throttle position sensor and thermostat. And the problem still persists. Any thoughts would be great thank you
 

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zackaryikerd

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What is your fuel pressure though?
At idle and under load?
I had similar symptoms on my 91, and it turned out to be the little rubber hose inside the tank connecting the pump.
I assume you changed the fuel filter as well.
Yes I changed the fuel filter too and I've checked fuel pressure and it's good as well and I only dies under load
 

Schurkey

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It will idle just fine when it dies it flashes the engine coolant temperature code at me which I've changed out three times

Connect a scan tool, find out what the computer wants you to know. Verify EVERY sensor and computer output, fuel trims, etc.
Stop changing parts three times, and connect a scan tool.

WHAT code is "coolant temperature", what part are you changing?
 

zackaryikerd

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The engine coolant temperature, right next to the thermostat the part in the picture
 

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