Question about 1988 GMC C1500

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'88 GMC 1500 Idles fine, but dies when accelerator is pushed

I've got a 1988 GMC 1500. It idles fine but when I push on the accelerator it sputters a bit and dies. I've already changed the fuel filter and spark plugs. I took off the distributor cap and cleaned the contacts and the rotor. I disconnected the fuel line from the carb and had a good stream of fuel (I don't have a test kit to check the actual pressure). I checked the readings across both injectors. They each read 1.6 ohms, which is a bit high (Haynes says they should be between 1.16 - 1.36 ohms), but since they both read the exact same I hoped they might be alright. I'd really appreciate any good ideas before I have to send it to a shop.

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  • fostemc07 Apr 12, 2009

    I am having the same problem. However, the engine will run when I push the accelerator but only if I disconnect and remove the PCV connection to the carborator. The engine idles really high. It is a new PCV valve but there is some residue on both stems (valave and the carborator intake) looks like oil. Any solutions?


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Have you considered the tps?

Posted on Jan 20, 2009

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