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08-23-2016, 10:46 PM | #1 | |
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Fuel shooting up past injector in 1993 454 TBI when ignition initially turned on
I have a 1993 Winnebago - P30 chassis and 454 engine. Vehicle stopped while on highway, waited 5 minutes or so - started again. When I parked at my garage smelled fuel. Opened air cleaner. Turned on ignition and fuel was spurting up past both injectors. Mechanic rebuilt tbI including O-rings. Turned on ignition same thing. Mechanic said I needed new ECM - purchased rebuilt - took PROM out of old put in new. Turned on ignition - same thing. Mechanic recommended new PROM. Chevy dealer said no longer available. descargartonos.info
Tried E-Bay and salvage yards - no luck. # on PROM is DELCO BAMS 5225. Chevy dealer says # should be 16175224 but also unavailable. QUESTION: Does this sound like an ECM/PROM issue or something else? Thoughts please. Thanks Last edited by NicoleJS; 06-07-2020 at 02:24 AM. |
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08-24-2016, 03:08 AM | #2 | |
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Last edited by Luxion; 04-02-2024 at 05:03 AM. |
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08-24-2016, 03:09 AM | #3 | |
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Re: Fuel shooting up past injector in 1993 454 TBI when ignition initially turned on
Thanks Luxion for the response. However the fuel starts shooting up before engaging the starter. Fuel spurts immediately when we turn on the ignition which engages the fuel pump. I did put in a new fuel pump about 2 thousand miles ago. Any other thoughts are ideas? Thanks in advance
https://descargartonos.info/dance-electronicos Last edited by NicoleJS; 06-07-2020 at 02:25 AM. |
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08-24-2016, 07:51 AM | #4 | |
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Re: Fuel shooting up past injector in 1993 454 TBI when ignition initially turned on
my guess a wiring / ground wire problem. that also would include injector wiring of the TBI. also check the injector coil resistance .
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08-24-2016, 03:47 PM | #5 | |
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Re: Fuel shooting up past injector in 1993 454 TBI when ignition initially turned on
A bad fuel pressure regulator? A plugged return line?
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08-24-2016, 04:18 PM | #6 | |
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Re: Fuel shooting up past injector in 1993 454 TBI when ignition initially turned on
Agreed, sounds like the ground side of the injector circuit is shorted to ground or the ECU is bad.
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