Havent been around in a while but I'm kinda back in the Ford game. Bought a 91 Ranger 2.3 5speed a few months ago and I've been trying to get it right ever since. I'm out of ideas. It has a miss I can't figure out.
So far I've done plugs, wire, coil packs, DIS/ICM, crank sensor, and timing belt. The tach was jumpy when I bought it and it missed randomly. Once it started missing all the time the tach reads between 600-3000 full range. After I threw all the parts at it it runs better but not right and the tach still isn't correct.
I've tried another computer and no change. At this point I'm thinking there is an issue in the harness.
I know a lot of you guys have years of experience with these 2.3s and just wondered if you had any ideas.
Also the connector for the small plug on the crank sensor in the harness is "modified". I had to repair it. One thing I cannot figure out is why there is exposed wire in the harness for that connector or if it should be connected to that plug. This alone could be the issue but I am not sure how it should look.
Welcome back Dillon.
where is the cat at?good luck.
Put away in a garage. I'm in no rush with that car. That car holds more value than it will ever be worth.
im not sure where to get an EVTM for a 91 at,,
have you already confirmed your compression numbers with a warm motor?
have you pumped air into the radiator to see if it holds pressure?
have you already physically looked at the plugs and verified any differences in thier electrode appearances
have you gotten around to pulling the codes?
Codes first. Throw parts at it second.
Don't throw any more parts at it until you run codes. Even if the issue is with the harness, you might be able to locate the problem based on any errors you get from the codes.
ALWAYS, ALWAYS, ALWAYS run codes first on an EEC4-equipped car, if you're having drivability issues (That aren't obvious, such as a screaming fuel pump). At the very least, if you get an "All clear", you'll have an answer to give all the folks who are asking what codes you got.