1989 Chevy S-10 Fuel System Problem

270,000 MILES • 6 CYL • 4WD • AUTOMATIC
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CHRISPETIT
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i recently bought a 1989 s-10 blazer with a 4.3 TBI V6 4X4 and i was told before i bought it that it needed a new fuel pump put in it before it will run right. I was also told that the problem was intermittent with the fuel reaching the engine so a mechanic told them that they need to replace the fuel pump. They bought one but never put it in opting to just sell it and be rid of it. The vehicle came with the pump and my question is... Is it possible for the sending unit to also go bad or do i just need to replace the pump only or what? and is there anything other than just dropping the tank and popping in another pump that i need to know or do or something else i need to buy before all this will work? Thanks for the help!
Dec 21, 2007 at 10:09 PM
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MERLIN2021
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Back in the 80's most pumps came as one piece, pump, strianer, and sender. Remove the battery negative cable before you start, do the job when there is about 1 gallon left in the tank, If you don't have the spanner wrench, use a hammer and brass punch to remove the lock ring!
Dec 21, 2007 at 11:32 PM
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CHRISPETIT
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is there a way to safely test the new pump and sending unit before placing everything back together to make sure everything is working good? and thank you so much for your help i appreciate it much!
Dec 21, 2007 at 11:42 PM
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MERLIN2021
  • ✓Experienced Mechanic
  • 17,250 POSTS
Check my signature file, it has a link to manuals for your truck or car, in it you will find electrical circuit tests you can do...
Dec 22, 2007 at 3:36 AM
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