Hello everyone, recently got my 1992 GT fox to run again, I changed the fuel pump, fuel injectors(made sure the harness outputs power and it sprays good) , checked for vacuum leaks and none, sparks are good, compression is good, but the thing is when I cold start the car, it sounds significantly better and feels stable. As it warms up, it hits this threshold where it just starts surging. After 7-10 min of idling I spray some water on the each exhaust manifold, and cylinders 1-4 run a lot warmer than 5-8, weird thing is cylinder 6 seems to properly firing. I also checked o2 sensors and swapped them and the same thing. Any ideas what it could be? Thank you guys in advance.
Pull codes, first. Even if there are no lights.
Almost [all] of these cars feel/sound more "nasty" when they're cold.
Have you pulled the plugs to read and see what's going on in there? If you have a lean or rich bank, that should help to tell the story.
Almost [all] of these cars feel/sound more "nasty" when they're cold.
Have you pulled the plugs to read and see what's going on in there? If you have a lean or rich bank, that should help to tell the story.
