1991 Ford E-150 Q&A
1991 Ford E-150 Question: cruise control
Start by looking at your brake light switch and your speed control deactivation switch. If either are malfunctioning, the system will not start up as a safety measure. - DaveJHM
replaced horn relay fuse under the hood.
I have had a professional check the total circuit. said pcm could be the problem. vehicle speed sensor.
The first time I noticed a problem, if I pressed the On button really hard, it came on. Now it doesn't. Any chance there's a way we can fix this ourselves? (My husband is moderately handy ...)