I'm at the end of my rope here. I've got a realitively stock 93' 5L with 60k miles that I recently installed an offroad H Pipe on and since then have experienced a problem that I cannot find the root of. As I've described on previous threads, the car demonstrates a hesitation/sputtering/rough running at 2-3k rpm. My initial assessment was a vacuum line off, as I've seen that before and did leave one off initially, that was accidentally left off during installation of the pipe. However, after pretty closely inspecting the lines, I've moved to other suspects such as fuel filter, plug wires, plugs, distributor, coil, rotor, and finally the MAF sensor. I haven't replaced the MAF sensor, but did clean the wires throughly with electrical cleaner, as I thought that a recently oiled K&N filter could have contaminated the sensor.
At any rate, my thought is now that maybe the Vacuum Solonoid was damaged when I left the vacuum line off after installation of the H-Pipe. I immediately reconnected the line after a brief drive, but the car has been demonstrating the hesitation ever since.
The car also picked up a slight twitch in the tachometer during idle, and while running, which I find strange. The car also just doesn't fire up strongly.
Does anyone have any other pointers? I'm to the point that I'm just going to have to take the car to have a diagnostic test run on it.
At any rate, my thought is now that maybe the Vacuum Solonoid was damaged when I left the vacuum line off after installation of the H-Pipe. I immediately reconnected the line after a brief drive, but the car has been demonstrating the hesitation ever since.
The car also picked up a slight twitch in the tachometer during idle, and while running, which I find strange. The car also just doesn't fire up strongly.
Does anyone have any other pointers? I'm to the point that I'm just going to have to take the car to have a diagnostic test run on it.
:tongue