I have 1991 ford F-150 that idles erratically up and could idles Down and have install a speed control motor and has worked. HELP!!
Look for vacuum leaks. They cause the same symptoms.
You may have a faulty IAC valve and/or a dirty throttle body.
I have 1991 ford F-150 that idles erratically up and could idles Down and have install a speed control motor and has worked. HELP!!
Look for vacuum leaks. They cause the same symptoms.
You may have a faulty IAC valve and/or a dirty throttle body.