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Old 03-12-2007, 09:10 AM
timothyn timothyn is offline
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S/10 puckup fuel pump will stop runinng

91 S/10
4.3

My fuel pump will NOT stop running. help
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Old 03-12-2007, 09:59 AM
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MT-2500 MT-2500 is offline
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Re: S/10 puckup fuel pump will stop runinng

Welcome on your first post on AF.
A little more info would help.
What has been done or not done?
Any repair history?
Any add on wiring stuff?
Try tapping or pulling fuel pump relay first and let us know what that does.
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Old 03-12-2007, 10:28 AM
timothyn timothyn is offline
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Re: S/10 puckup fuel pump will stop runinng

Quote:
Originally Posted by MT-2500
Welcome on your first post on AF.
A little more info would help.
What has been done or not done?
Any repair history?
Any add on wiring stuff?
Try tapping or pulling fuel pump relay first and let us know what that does.
The fuel pump is new from last year but thats it.Nothing esle as been done.
385,000 km and still going. Where is the relay?
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Old 03-12-2007, 11:11 AM
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MT-2500 MT-2500 is offline
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Re: S/10 puckup fuel pump will stop runinng

What engine code and S-10 pickup right?
Left front by brake booster.
Also check for power on ECM-B fuse with key off.
The oil pressure switch or fuel pump relay can power the fuel pump if there is 12 volt power on ECM-B fuse.
Pull fuse and relay and if fuel pump still runs it has a short in wiring someplace supplying power to fuel pump.
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MT
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Old 03-12-2007, 01:49 PM
timothyn timothyn is offline
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Re: S/10 puckup fuel pump will stop runinng

Quote:
Originally Posted by MT-2500
What engine code and S-10 pickup right?
Left front by brake booster.
Also check for power on ECM-B fuse with key off.
The oil pressure switch or fuel pump relay can power the fuel pump if there is 12 volt power on ECM-B fuse.
Pull fuse and relay and if fuel pump still runs it has a short in wiring someplace supplying power to fuel pump.
OK I just moved all the wires around the relay and it worked!
thats alot of wires to look at. So I guess its one of the wires.
Thanks for your help.
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