2000 4.8L stalls

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October 20th, 2021, 1:37 PM

roaddawg15@gmail.com

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2000 4.8L stalls

2000 Silverado 4.8 L RPMs will drop at idle, sometimes stalls, sometimes raises back to normal. Anyone else have this problem?

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October 21st, 2021, 3:16 AM

oilcanhenry

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Can you give us some OBD II codes? I might help us determine your issues.

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October 21st, 2021, 1:56 PM

chem_man

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Check the fuel pressure regulator for integrity - it might have a ruptured diaphragm.

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February 19th, 2022, 3:26 AM

DonT

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Quote:

Originally Posted by roaddawg15@gmail.com

2000 Silverado 4.8 L RPMs will drop at idle, sometimes stalls, sometimes raises back to normal. Anyone else have this problem?

My 2000 4.8L would randomly drop rpm and stall at startup. I recently changed the idle air control valve. It was an expensive little part (~$90) but was easy to replace as it’s right on top of the engine behind the throttle body mounted with 2 small screws and nothing in the way. Its been a couple weeks hasn’t stalled since.