97 Express 3500 Fuel Pump Intermittent Problems
97 Express 3500 with 454 ci engine. Replaced the fuel pump and pressure regulator and now it starts intermittently. Sometimes it won't start but I let it sit for a half hour or so and it starts. Sometimes I get no hum from the pump, I can bang on the fuel tank and it kicks in and starts. I had it scanned and showed code for throttle positioning sensor. Any help would be appreciated.
Thanks |
try swapping the fuel pump and starter relays. They are the same. If it improves there is your issue. If however the new pump is faulty.....( was it new or a used part?) Then it might need doing again.....
I have heard stories of new pumps only lasting a few months...which sucks for sure. Replace the tps if its bad. Computers don't work well with faulty input readings. |
454,, that thing must haul ass... good luck with your repair.
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