1989 Ford Ranger 2.3L 4 Cylinder Check Engine Light
I have a 89 Ford Ranger and I've been having problems with getting it to run smooth. The idle is rough and it's weak on power and speed. I have replaced the O2 sensor, MAP sensor, both coil packs, and crank position sensor. It still runs rough and the driver side coil is not firing to the plugs. The plugs and wires are all good. I've checked all the connects and wiring I could and still no fix. Autozone and O'Riellys said they can't check it with a code reader because it's pre 1996. If anyone has had this problem or can help me fix it I'll give 10 points! I don't want to have to go spend more money on sensors I don't need. Any help appreciated.