Hello, my 'ol Pick Up Truck needs help. I don't drive it much anymore because of the suspension rust and the mileage, etc. It normally runs great however. I thought it was the Fuel pump. I've changed it before ~8 yrs ago. Recently I think it's been acting up again.
I have put a pressure gauge on the fuel rail- and when it runs- it's with in spec- 48PSI.
Sometimes it won't start and no reading on the pressure gauge. Other times it starts, 48#, and yesterday near my home it ran poorly- like the fuel pump is intermittently gong out.
When it wouldn't start, I sprayed something in the throttle body, it would fire over briefly- hence I feel it is a fuel flow issue. Randomly other times, it starts right up.
* I checked the codes today - Zero codes! If the fuel pump had occas. low pressure- THAT should throw a code- even w/o a dash check engine light.
I've checked the 2 fuses that could keep the fuel pump from working, and swapped regulators around, no difference.
Today, I started it and drove it in my neighborhood again. Once it had a dying like idle- never died.
I bought another fuel pump- top of the line one from Rock Auto. However with the NO Codes thing- I'm not so sure that it is the fuel puimp?
* Changing it is a MAJOR PITA- the straps that hold it up are so rusted, etc.
My favorite local shop quoted $650- with THEIR fuel pump- they will not install a brand new one I have.
So, what else, sensor?, etc. could make this happen? Your thoughts? Anyone? Beuller? Silver7? Nail Grease? PlPlPl, etc/?