87 S-10 fuel problems - The 1947 - Present Chevrolet & GMC Truck Message Board Network

one2drink · 04-09-2003, 02:40 PM

I have a 4 cyl throttle body injection. I think it's the fuel pump, but just curious is it possible for the relay (fuel pump) to go bad. And is there a fuse that controls this? Is it that hard to change the fuel pump.? thanx...matt

87 STEPPER · 04-09-2003, 04:16 PM

Matt,

Welcome to our addiction, you really didn't say what the real prob. is only you think it's your fuel pump? Im not shure what your ??? is

Tell us what your truck is or is not doing???

one2drink · 04-09-2003, 10:01 PM

I was getting ready for work and was off in never never land. Sorry..... I ain't getting any fuel....that's the problem no go go juice. But i gotta new relay tonight and that wasn't the problem. also had another cpu sitting around and tried it and that wasn't the problem...I really think it's the fuel pump. I hate all this computer stuff...can't we just go back to carbs and stuff.... Is it hard to change out the pump...I think it's in the tank....I am just ramblin now...but thanx....matt

79BIG10 · 04-10-2003, 02:30 AM

Did you check the fuel injection fuse? This may have gone out or anyother one that may have gone out to cause the fuel pump or injectors to go out.

BTW: Yes it should be in the tank.

87 STEPPER · 04-10-2003, 03:07 AM

Matt,

Here's a quick way to tell if the pump is working with the radio off and as quiet a place as possable turn the key to the assy. position and listen for a buzz sound if you don't hear anything then it could be two thing's. 1st the pump is bad and it's in the fuel tank. 2nd your not getting power to the pump.

Check to see if your getting power out to the tank by jacking the truck up and then follow the wires from the frame to the tank then find the connector at the top of the tank you should be able to disconnect it without removing anything then use a test light and probe one of the pins and have a friend trun the key to the assy. position and see if the light comes on you may have to do this several times untill you get the correct pin when you find the right pin and the light comes on it will only stay lit for a few seconds and thats normal. If you do have power there then your problem is a bad pump

If you dont have power then start tracing the wires to find the fault.

one2drink · 04-10-2003, 12:34 PM

Yeah checked fuses and wires....I am getting power.....It's the pump. Going to pull it out tommorow....thanx yall....

matt

04-09-2003, 02:40 PM	#1
one2drink Registered User Join Date: Apr 2003 Location: The Mountains of Virginia Posts: 3	87 S-10 fuel problems I have a 4 cyl throttle body injection. I think it's the fuel pump, but just curious is it possible for the relay (fuel pump) to go bad. And is there a fuse that controls this? Is it that hard to change the fuel pump.? thanx...matt

04-09-2003, 04:16 PM	#2
87 STEPPER STILL PLAYS WITH TRUX Join Date: Nov 2002 Location: Melbourne, Fla. Posts: 2,764	Matt, Welcome to our addiction, you really didn't say what the real prob. is only you think it's your fuel pump? Im not shure what your ??? is Tell us what your truck is or is not doing??? __________________ ~~Bruce~~ MY 87 STEPPER MY 99 2D/WD TAHOE

04-09-2003, 10:01 PM	#3
one2drink Registered User Join Date: Apr 2003 Location: The Mountains of Virginia Posts: 3	Sorry I was getting ready for work and was off in never never land. Sorry..... I ain't getting any fuel....that's the problem no go go juice. But i gotta new relay tonight and that wasn't the problem. also had another cpu sitting around and tried it and that wasn't the problem...I really think it's the fuel pump. I hate all this computer stuff...can't we just go back to carbs and stuff.... Is it hard to change out the pump...I think it's in the tank....I am just ramblin now...but thanx....matt

04-10-2003, 02:30 AM	#4
79BIG10 I'm back with 2nd truck! Join Date: Feb 2002 Location: Texas Posts: 3,775	Did you check the fuel injection fuse? This may have gone out or anyother one that may have gone out to cause the fuel pump or injectors to go out. BTW: Yes it should be in the tank. __________________ 1979 Chevrolet Bonanza Big10 "Tootsie Roll" 1985 Chevrolet Silverado (wife's) Member of the Southern Bowties Club "Don't underestimate how sexy a fat man who drinks to excess can be." Homer Simpson

04-10-2003, 03:07 AM	#5
87 STEPPER STILL PLAYS WITH TRUX Join Date: Nov 2002 Location: Melbourne, Fla. Posts: 2,764	Matt, Here's a quick way to tell if the pump is working with the radio off and as quiet a place as possable turn the key to the assy. position and listen for a buzz sound if you don't hear anything then it could be two thing's. 1st the pump is bad and it's in the fuel tank. 2nd your not getting power to the pump. Check to see if your getting power out to the tank by jacking the truck up and then follow the wires from the frame to the tank then find the connector at the top of the tank you should be able to disconnect it without removing anything then use a test light and probe one of the pins and have a friend trun the key to the assy. position and see if the light comes on you may have to do this several times untill you get the correct pin when you find the right pin and the light comes on it will only stay lit for a few seconds and thats normal. If you do have power there then your problem is a bad pump If you dont have power then start tracing the wires to find the fault. __________________ ~~Bruce~~ MY 87 STEPPER MY 99 2D/WD TAHOE

04-10-2003, 12:34 PM	#6
one2drink Registered User Join Date: Apr 2003 Location: The Mountains of Virginia Posts: 3	Yeah checked fuses and wires....I am getting power.....It's the pump. Going to pull it out tommorow....thanx yall.... matt



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