aaronb
I'm Awesome
My 98 350 vortec, 4l60e with 115k miles,falls flat on its face on acceleration. it just started a couple days ago. Its really bad on the 1-2 shift.
I put a fuel pressure gauge on it. At idle I'm getting 52 psi, with the key on and not running the psI is at 58. I let the truck sit with gauge on it for 10 minutes and the pressure never dropped. With the truck in park I can Rev the hell out of it and it won't stumble.
It has a new cap, rotor, plugs and wires. All ac Delco.
I thought the fuel pump was the culprit, so I bought a new delphi and no change with the issue.
I also put in a new fuel filter aswell, even though the old wasn't bad.
I pulled the upper intake off last night and I'm not seeing any leaks with the spider or regulator.
The tps sensor tests good, I cleaned the maf sensor.
There are no engine codes.
I put a fuel pressure gauge on it. At idle I'm getting 52 psi, with the key on and not running the psI is at 58. I let the truck sit with gauge on it for 10 minutes and the pressure never dropped. With the truck in park I can Rev the hell out of it and it won't stumble.
It has a new cap, rotor, plugs and wires. All ac Delco.
I thought the fuel pump was the culprit, so I bought a new delphi and no change with the issue.
I also put in a new fuel filter aswell, even though the old wasn't bad.
I pulled the upper intake off last night and I'm not seeing any leaks with the spider or regulator.
The tps sensor tests good, I cleaned the maf sensor.
There are no engine codes.