89Bronco
New Member
- Joined
- April 20, 2012
- Messages
- 4
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- Year, Model & Trim Level
- 1989 Bronco II
Hello all. I have a 1988 Bronco II 4wd auto with 2.9 that I just bought. It was running fine, then it has developed a intermittent miss, loss of power, and a surging, all while holding the accelerator steady, then it will lunge forward with a burst of power, then revert to the loss of power, almost seems like a stuck choke, but it is fuel injected. It idles fine. Fresh tune-up, map sensor, throttle sensor, fuel filter, oxygen sensor all new. My mechanic is puzzled, as the scanner says the oxygen sensor is bad, but it is new. We are at our wits end. What can we try next? Thanks in advance.