Hi-
My first Buick is Grandma's 88 Regal, which she bought new when my grandfather died. Not a very nice car, but decent daily driver. I've fixed a lot of stuff on the car (head gaskets, injectors, fuel pump, brakes, ICM, coil packs, etc.), but one thing still kicks my a$$. It has this this annoying surge problem like computer is retarding timing, or??? (Did replace the knock sensor.) In warm weather the car runs pretty bad, poor acceleration, more pronounced surging. It runs ok in cooler weather.
It had the same problem about 4 years ago and i replaced the injectors, and it seemed to run much better. Don't want to do that again if it is something else. Checked fuel pressure: 40psi at idle, 45-47 psi WOT, no leak-down over 30-40 minutes.
Any ideas?
My first Buick is Grandma's 88 Regal, which she bought new when my grandfather died. Not a very nice car, but decent daily driver. I've fixed a lot of stuff on the car (head gaskets, injectors, fuel pump, brakes, ICM, coil packs, etc.), but one thing still kicks my a$$. It has this this annoying surge problem like computer is retarding timing, or??? (Did replace the knock sensor.) In warm weather the car runs pretty bad, poor acceleration, more pronounced surging. It runs ok in cooler weather.
It had the same problem about 4 years ago and i replaced the injectors, and it seemed to run much better. Don't want to do that again if it is something else. Checked fuel pressure: 40psi at idle, 45-47 psi WOT, no leak-down over 30-40 minutes.
Any ideas?
