Hello
Group,
Hi Everyone,
Welcoming
your thoughts on recent braking issues my F is suffering -
Problems
started last Sunday afternoon, on my 77 mile drive back home from the Belvidere,
IL Mopar Happening. About halfway home, I smelled a brake shoe burning smell,
and saw the engine temp gauge move up to the midway point, from its typical cool
position - this while running at 70 mph with 90 degree outside temps. The brakes
were clearly making contact. The brake pedal was also sitting an inch or more
higher than normal, with a hard feel, but the brakes still stopped the car when
applied. I backed into my garage, and noticed my brake lights stayed on, even
when not touching the pedal. When I lifted up on the pedal, the brake lights
would go off. I popped off the hubcaps, all 4 of which were very hot to the
touch, to let the wheels cool off a little quicker. When the car cooled down, it
was back to normal.
This
week, I went to 3 local cruise nights, each about 15 minutes away, with
no apparent braking issues. I also took the F to the local shop I've
used for all my undercarriage work. They tried to replicate the issue, but
couldn't. They cleaned up the front shoes and drums a bit, but said all looked
fine.
Yesterday,
I drove the F up to Kenosha, WI, to check out the AMC reunion show, and visit
with John Begian and his freshly restored '68 AMX. No issues driving the 72
miles up, in the cool morning air. Same issue as last week, however, on the way
home. When traffic bottled up on I-294 near O'Hare, the brakes started grabbing,
and the engine temp headed higher. I pulled over at the O'Hare Oasis, let the
car cool down for 40 minutes, and then drove home with no further issues.
John
Begian suggested that I try pulling the vacuum hose off the brake booster,
before shutting off the engine, to see if that released the pedal. So this
afternoon, I went out cruising again to heat up the car, and got the brakes to
grab again, with the smell of brake linings, and engine temp climbing. Brake
lights again stayed on when I was out of the car, and the pedal was high and
hard. I pulled off the vacuum hose, as John suggested, and heard a whoosh of
air, but no change in the high pedal height, and the brake lights still
stayed on. The front right hubcap was the hottest, with right rear and left
front also pretty warm. Left rear was cool.
Some
added background on this car -
I'm
thinking it's the brake booster causing these issues, but not sure. My
mechanical knowledge is weak, at best!
I
welcome your thoughts!
Noel
Hastalis
Burr
Ridge, IL
F
coupe
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