98 Cat ZL500 problem?

[Captjacksparrow]

Have a 98 ZL500 EFI. Fuel pump was shot so I replaced it. It now pumps but only makes 20lbs of fuel pressure. The machine actually runs but is boggy down low. The machine is supposed to have 45lbs of fuel pressure. I tested the fuel pump voltage and it reads 14 plus volts until I plug in the fuel pump, then it drops to 4 volts. Has anyone run into this before? Could it be the ECU, stador? I've googled it and can't find anything. Any help would be appreciated, thanks, Dan

 

[tex78]

Voltage drop in the wires?? Power or ground


Hook up a old glass head light bulb Dan and load the feed power and ground and see if light is dim, and what volts it has then

Then use same power and ground at different spots and see if light get bright

sent while drinking tea's

 

[Captjacksparrow]

Got'er fixed, was a bad connection.