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fuel pump

Old Feb 11, 2008 | 01:24 PM
  #1  
831chevyman's Avatar
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From: California
Car: 67 Camaro/91 Camaro
Engine: 350/3.1 v6
Transmission: M22/stock
Axle/Gears: 3.73 GM 12 Bolt/stock
fuel pump

i was wondering if the fuel pump turned on every time you turn the key to the on position or was it just once in the beginning to prime the car? it takes me a few cranks to turn the car on after its been sitting for awhile but after that its fine. also the ses light is on and its giving me code 54. just changed the fuel pump but the light comes on sometimes and at other times its not on?

Last edited by 831chevyman; Feb 11, 2008 at 01:29 PM.
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Old Feb 11, 2008 | 01:28 PM
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: fuel pump

It'll turn the pump on for 2 seconds every time you turn the key on.
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Old Feb 11, 2008 | 01:33 PM
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From: California
Car: 67 Camaro/91 Camaro
Engine: 350/3.1 v6
Transmission: M22/stock
Axle/Gears: 3.73 GM 12 Bolt/stock
Re: fuel pump

would you be able to hear it every time or just the first time when it is priming the fuel?
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Old Feb 11, 2008 | 01:39 PM
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Apeiron's Avatar
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: fuel pump

Every time
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Old Feb 11, 2008 | 01:45 PM
  #5  
831chevyman's Avatar
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From: California
Car: 67 Camaro/91 Camaro
Engine: 350/3.1 v6
Transmission: M22/stock
Axle/Gears: 3.73 GM 12 Bolt/stock
Re: fuel pump

and for the ses light could it be possible that the oil pressure switch be making it turn on because everything seems to be fine on the car as far as i know
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Old Feb 11, 2008 | 01:50 PM
  #6  
Apeiron's Avatar
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: fuel pump

No, if you're getting a code 54 when you start the car you likely have a bad fuel pump relay.
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Old Feb 11, 2008 | 01:56 PM
  #7  
831chevyman's Avatar
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From: California
Car: 67 Camaro/91 Camaro
Engine: 350/3.1 v6
Transmission: M22/stock
Axle/Gears: 3.73 GM 12 Bolt/stock
Re: fuel pump

so even though the fuel pump turns on and the car runs the relay could still be bad? thanks for the help by the way
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Old Feb 11, 2008 | 02:06 PM
  #8  
Apeiron's Avatar
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: fuel pump

With a bad relay, the fuel pump will turn on after the engine has cranked long enough to build enough oil pressure to turn on the oil pressure switch.
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Old Feb 11, 2008 | 02:10 PM
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831chevyman's Avatar
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From: California
Car: 67 Camaro/91 Camaro
Engine: 350/3.1 v6
Transmission: M22/stock
Axle/Gears: 3.73 GM 12 Bolt/stock
Re: fuel pump

ok... and once the vehicle is on its just getting the rest of the signal from the oil pressure switch.
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Old Feb 11, 2008 | 02:19 PM
  #10  
Apeiron's Avatar
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From: Mercedes Norte, Heredia, Costa Rica
Car: 1984 Z28 Hardtop
Engine: 383 Carb
Transmission: 4L60
Axle/Gears: 3.54 Dana 44
Re: fuel pump

Right, that's pretty much the whole point of the oil pressure switch, it's a backup to the fuel pump relay.
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Old Feb 11, 2008 | 02:21 PM
  #11  
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From: California
Car: 67 Camaro/91 Camaro
Engine: 350/3.1 v6
Transmission: M22/stock
Axle/Gears: 3.73 GM 12 Bolt/stock
Re: fuel pump

alright. im gonna go get a new relay and switch it out then.. thanks for the info and ill let you know if that fixes the problem
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Old Feb 11, 2008 | 07:12 PM
  #12  
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From: California
Car: 67 Camaro/91 Camaro
Engine: 350/3.1 v6
Transmission: M22/stock
Axle/Gears: 3.73 GM 12 Bolt/stock
Re: fuel pump

i changed the relay and it seems to be working good now. the pump turns on in the beginning for about 2 seconds and it seems to turn over on the first crank now. the check engine lights not on anymore so for now i think its good. thanks for the help
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Old Feb 11, 2008 | 08:31 PM
  #13  
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Re: fuel pump

i'm having a similar problem but the car eventually starts maybe i should look into doing that

Last edited by 91chevywt; Feb 11, 2008 at 08:34 PM.
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