Engine Performance problem
1989 Ford Bronco V8 Four Wheel Drive Automatic 25000 miles
My 1989 ford bronco w/351 / 25000 on rebuilt engine and auto trans has a rough idle. I got it used and the owner said it has 25000 on this rebuilt engine but I don't know for sure. I took it straight to a garage and they replaced the O2 sensor and the TPS. They told me they had to adjust the timing higher than normal to get it to idle better. I also own a 1990 bronco w/302 and when I compare the two distributors, the '89 is sitting much farthur to the left. I am thinking that the distibutor could be one tooth off. It idles at 900-925 rpm and always feels rough, like it may cut off at any time. On the open road it runs great. Also with the idle set so high, it makes the engine hard to start when it's hot. Any clues?
Sunday, May 10th, 2009 AT 6:11 PM