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Is my fuel pump bad?

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Old Sep 3, 2023 | 02:08 PM
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From: Des Moines
Default Is my fuel pump bad?
My '91 fires up, but will only continue to run if I rev the engine and keep the rpms up. When I let off the gas it immediately stalls. Does this sound like I have a bad fuel pump? If not, what's the next P.O.A.?
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Old Sep 3, 2023 | 02:11 PM
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Fuel pressure check and fuel sample to see if it's contaminated with water.

Next the last time fuel filter was replaced
Also have you ever cleaned the throttle plates
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Old Sep 3, 2023 | 03:04 PM
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It could also be a dead IAC.
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Old Sep 3, 2023 | 05:13 PM
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Replaced filter last summer. And it was almost empty so I threw 5gal of 91 octane in it.
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Old Sep 11, 2023 | 12:53 PM
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Could also be a vacuum leak.
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