Question about Chevrolet Tahoe

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97 tahoe 5.7 .motor shutafter couple mins starts. fuel pump replaced. dont hear it pumping but then motor starts. I had some one tell me it was acrankshaft sensor whats up

What make shut off and not start. but then few min ater start and run fine.

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  • Chevrolet Master
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Don't go by what someone said ! Testing the affected system is the only way to trouble shoot a problem like this . When it dies and won't start you need to find out what is missing , spark or fuel ! Pull the coil wire off the Distributor cap and hold near ground (metal on the engine ) Have someone turn the engine over , turn the key to start position. Is there spark ? If yes , it's not the crank sensor . Test the fuel pump relay electrical circuit . put a fuel pressure gauge on the fuel rail . The fuel injectors on these are known problem childs . CPI - center port fuel ijection . They are located under the intake manifold along with fuel pressure regulator . The regulators are known to leak fuel inside the intake manifold . Cause hard start problems . How to identify and repair leaking fuel pressure regulator GM CPI system...

Posted on Dec 29, 2016

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