jonboy99

I have an 88 pickup with a 22RE. My problem is that the fuel pump hasn't been working so I ran a direct line from the battery to the fuel pump wire in the test box under the hood. But the fuel pump still will not turn on. What I would like to know is if that means that the fuel pump is bad or is there something else that would keep it from turning on.

OSU4Runner

Check the ground for the fuel pump and make sure you do have good power going to the pump. Check with a multimeter. If you ground and power is good to the pump, then I would say it was bad.

4Crawler

iTrader: (3)

Try the fuel pump test jumper:
- http://www.4crawler.com/4x4/CheapTri...shtml#FuelPump

Could be your Air Flow Meter fuel pump contact is inoperative.

jonboy99

I checked the voltage to the line going to the fuel pump and it was only getting like 6.7.

OSU4Runner

You should be getting 12V, I only see one resistor in that schematic and its inside the circuit relay. You might have a voltage drop somewhere in the line. Did you check this with the ignition on? Also, did you check the ground at the pump? and fuses too!

4Crawler

iTrader: (3)

Could be dirty contacts inside the relay or a bad wire between the relay and the pump.

jonboy99

I had somebody turn the ignition over while i checked the voltage and yes I have checked the fuses but i haven't replaced the relay yet

jonboy99

where is the resistor located at that is on the same line as the pump

OSU4Runner

From the schematic, its looks like its inside the circuit opening relay.