Fuel pump issues
06-01-2013, 06:28 PM
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Car: 1986 Firebird
Engine: 5.0L V8
Transmission: T-5
Axle/Gears: 2.73
Fuel pump issues
Anyone else have a short in their fuel pump wiring? If I take a wire from the battery to the orange wire in the Fuel pump relay connector, the car runs, but if I take it out, it stops getting fuel... The wires going into the connector look right ****ed, is that what the problem is?
06-02-2013, 07:47 AM
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Car: 1991 camaro rs
Engine: 3.1 - looking to upgrade to 3400 hy
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Do you have a multimeter? Check to see if its getting voltage while cranking.
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06-02-2013, 06:51 PM
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Car: 2003 Hyundai Tiburon GT
Engine: 2.7L V6
Transmission: 6-speed
Axle/Gears: 4.41
Re: Fuel pump issues
Personally, IDK what GM did with all of the engine relays that makes pretty much every wire on every one go bad like that...
Get a new relay connector. You can go to a place like Sonic Electronics and get a pair for door locks or something and have to replace $3 relays instead of $20 relays in the future (I currently run a pair of these and have for a couple years).
I'm going to assume that since the engine runs, there isn't a blown fuse on that orange wire. Which is also the constant battery feed for the ECM. Your engine should be running off of the oil pressure switch if the relay is bad (and you should be getting a code 54 as well), but if it's not, you have a bad pressure switch.
Again, replace the fuel pump relay connector, and then the fan relay connector next to it and possibly the A/C compressor relay next to that if they're all bad. Before you blow the fuse and also lose the ECM.
Get a new relay connector. You can go to a place like Sonic Electronics and get a pair for door locks or something and have to replace $3 relays instead of $20 relays in the future (I currently run a pair of these and have for a couple years).
I'm going to assume that since the engine runs, there isn't a blown fuse on that orange wire. Which is also the constant battery feed for the ECM. Your engine should be running off of the oil pressure switch if the relay is bad (and you should be getting a code 54 as well), but if it's not, you have a bad pressure switch.
Again, replace the fuel pump relay connector, and then the fan relay connector next to it and possibly the A/C compressor relay next to that if they're all bad. Before you blow the fuse and also lose the ECM.
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