Fuel pump

Tiny
DAVIDMOBLEY
  • MEMBER
  • 1986 CHEVROLET CAPRICE
  • V8
  • 2WD
  • AUTOMATIC
How can I hard wire a fuel pump so the brain can read it and send power to the injectors so my car will run.I bought a toggle switch and now I need to know how to wire it so the injectors work
Tuesday, April 5th, 2011 AT 9:30 PM

4 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Do you have a distributor or DIS? If its a distributor-check and test the distributor pick-up coil
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Tuesday, April 5th, 2011 AT 9:50 PM
Tiny
CARADIODOC
  • MECHANIC
  • 33,871 POSTS
There's no such thing as what you're trying to do. If voltage is missing to the injectors, look for a blown fuse or broken wire. The Engine Computer pulses them and varies the number of milliseconds they are held open to control the amount of fuel entering the engine. You can't possibly flip a switch on and off fast enough to run the injectors.

If you hard-wire the fuel pump, it won't turn off in the event of a crash that ruptures a fuel line. That will create a severe fire hazard. Insurance investigators and lawyers love to find cobble-jobs like that, especially when their client was at fault for a crash. It is REAL easy to make you appear partially responsible for any injuries.
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Tuesday, April 5th, 2011 AT 9:53 PM
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
If voltage is present to the injectors-using a switch on it-you best be faster than a speeding bullet than the PWM on the injector circuit-also wiring the pump direct is unsafe-Get someone to help you out_Good Luck
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Tuesday, April 5th, 2011 AT 10:02 PM
Tiny
DAVE'S BIG BACKYARD!
  • MECHANIC
  • 262 POSTS
If I was you I would just try to fix it the right way, its allways best.P.S if you tell us a little more about what its doing we can try to get it running for you.
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Tuesday, April 5th, 2011 AT 10:57 PM

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