2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Testing Fuel Pump

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Old Jan 10, 2002 | 02:22 PM
  #1  
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Testing Fuel Pump

I want to make sure I'm getting the right voltage to my fuel pump, I know where the conecter to the fuel pump is (left shock tower) it's got 4 wires going to it, I think the 2 bigger ones are power, I checked them and got about 9.75 at idle.

Did I check the tright wires? and if I want to check voltage at WOT/boost should I just plug into the back of the connectors, and bring along a friend to read DMM? what's a good reading, what's the lowest safe reading?

Also check out this "Painless Wiring Electric Fuel Pump Relay" from Jegs, to me it looks like a bunch of wires and a fuse, but it might be helpful for someone like me who isn't too experienced with the electrical system yet.

http://www.jegs.com/cgi-bin/ncommerc...br=76&lastcat=
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Old Jan 10, 2002 | 02:51 PM
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cymfc3s's Avatar
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From: Half Moon Bay, CA
see what voltage you get at WOT. You should be getting around 12v at the pump.
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Old Jan 10, 2002 | 09:45 PM
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Scott 89t2's Avatar
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the 9 or so volts at idle is correct. and you should see 12-14 at WOT. if you see less then 12 with raido etc on you should rewire it. and ya just bring along a friend.
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