HELP

275 pro · June 21, 2006

I installed a new fuel pump in my S-10 last night and now it won't hit a lick. I can hear the pump cut on and then a couple of clicks under the hood, but then it just spins. It's not getting any fuel. Please help! Any ideas what I need to do?

Ben

ChevyTech007 · June 22, 2006

Need some more info. I'm guessing it would not start before you replaced the pump? Does it have fire? What year and engine?

275 pro · June 22, 2006

Need some more info. I'm guessing it would not start before you replaced the pump? Does it have fire? What year and engine?

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It did run before the replacement, but would not start when cold and missed on acceleration. I was told to replace pump. It is on a 1989 S-10 with a 4.3 engine. I have voltage to the pump relay of 12.4, voltage to the injectors of 12.4 and voltage to the connector where the fuel pump hooks up of 8.38. I can hear the pump cut on and then two clicks under the hood when I turn the key on. I am not getting any fuel through the injectors.

Thanks for the help.

ChevyTech007 · June 23, 2006

I would spray carb cleaner down the throttle body while cranking to see if it will briefly start. If it does then you know it is fuel related. Seems like a big voltage difference from the relay to the pump. But for now just see if it will start on carb cleaner.

275 pro · June 23, 2006

I would spray carb cleaner down the throttle body while cranking to see if it will briefly start. If it does then you know it is fuel related. Seems like a big voltage difference from the relay to the pump. But for now just see if it will start on carb cleaner.

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It will briefly start. I took the fuel line loose at the throttle body last night and while turning the motor over there is no gas comming from the line. I guess I screwed something up when putting the new pump in. I will put five more gallons of gas in today to make sure this is not the problem. If that doesn't help I guess I will put the old pump back in. At least it worked some. Maybe then I can get it to someone that knows what the heck to do with it. If you have any more suggestions to try, please let me know as I am at a loss.

Thanks so much for the help.

Ben

ChevyTech007 · June 25, 2006

Make sure your ECM B fuse is not blown. Check if you have fire on the gray wire at the fuel pump connector for 2 seconds after you turn the key on.

getcrunk88 · June 25, 2006

why dont you do somthing simple like change the fuel filter, could be clogged up and not sending any fuel to the tb i would change that even if that isnt the problem just to rule it out.