86 s10 no pwr to fuel pump

220

Asked by jtpshmas11 Sep 03, 2016 at 06:26 PM about the 1986 Chevrolet S-10

Question type: Maintenance & Repair

Someone bypassed the relay on my 86 s10 . Was
driving and it just shut off. Now I'm not getting pwr
to the pump at all and can't figure out why. Help
please

9 Answers

240

have you actually checked to make sure that power isnt getting to the fuel pump or has it just stopped working? if it has just stopped working try the old chevy fuel pump fix of hitting it firmly while trying to start the car, sometimes that will make it kick on for a few minutes indicating that the pump is bad. if it is just not getting power make sure that it is wired (even if not through the relay) and that all the connections are solid

4 people found this helpful.
220

I have checked and double checked over and over. I replaced the fuel pump like 3 hrs ago. I just don't get why I'm not getting power to the pump.

9 people found this helpful.
240

there is, however you probably dont want the fuel pump running 100% of the time so your best option besides wiring it properly of course, would be to wire it into a circuit that has ignition on power only. you can find that with a test light and checking circuts with the key off and the key on.

5 people found this helpful.
220

It is wired to the ignition now but still is not getting any power to the pump. Brand new pump.

2 people found this helpful.
240

does the rest of the truck have power? and check your wiring and grounds to be sure that the circut is complete. can you confirm with a multimeter that the pump is getting power or that the wires at the pump are live before they enter it?

4 people found this helpful.
220

Ok I figured it out. It was the ecmb fuse change it and it drove fine. But I have gone thru 6 fuses in 2 days 3 fuses a day . I don't understand what is the problem now

4 people found this helpful.
20

I'm going to add to the discussion for the next poor soul to come along. I chose to do it here bekez this is the first thing that pops up on Google. And you are here. Fuel pumps on old S-10s have been my personal Jonah. I'm on my 4th or 5th one. The truck doesn't get much use so it just sits there and breaks. After the fuel pump went out again the other day and we put a new one on and it still didn't work I had the truck sold last night. Finally decided. Got my head right. After MUCH tinkerings...lots of reading, colorful words and things you want to know what it boiled down to? A lying ground wire. Before you do a thing check your ground from the unit to the frame. Disconnect, sandpaper, and put it back together. You should be so lucky that you'll fix your problem right off the bat without losing your mind. At the very least it prolly needs it anyway. In my case we kept getting half voltage...not enough to spin the pump. If you discover a voltage problem REMAKE THE GROUNDS. Good luck and why in the heck do you keep that old antique tag piece of junk around anyway? You must be dense like me. I called the guy back and unsold the truck. BUT...I still have his number. I swear and affirm that when the next truck boofer of consequence happens...it's gone gone doggies! I told it so!

2 people found this helpful.

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