Cruise control troubleshooting
Thread Starter
|
Fleet Mechanic
Joined: Jan 2005
Posts: 1,344
Likes: 1
Cruise control troubleshooting
My cruise quit working shortly after I had the steering wheel off for ignition switch work. This is what I found during my trouble shooting.
1) key off -- 12 volts on the outer brush contact and 0 volts on the inner.
2) key on -- 12 volts on the outer brush contact and 7.5 volts on the inner brush contact.
3) outer brush shows little wear, inner brush looks like the side of a mountain.
4) battery voltage to the speed control amplifer like the manual shows.
5) resistance check is more than 1 OHM. The shop manual says either the brush contacts or the turn signal
are bad.
6) Ford dealer says the wire harness is no longer in production.
My question is Could I buy new brushes and keep my harness?
This is for an '88 F-150
Thanks for any input,
Mike
<!--IBF.ATTACHMENT_14025-->
1) key off -- 12 volts on the outer brush contact and 0 volts on the inner.
2) key on -- 12 volts on the outer brush contact and 7.5 volts on the inner brush contact.
3) outer brush shows little wear, inner brush looks like the side of a mountain.
4) battery voltage to the speed control amplifer like the manual shows.
5) resistance check is more than 1 OHM. The shop manual says either the brush contacts or the turn signal
are bad.
6) Ford dealer says the wire harness is no longer in production.
My question is Could I buy new brushes and keep my harness?
This is for an '88 F-150
Thanks for any input,
Mike
<!--IBF.ATTACHMENT_14025-->
