LookyLeasy
Performance & TuningDiagnostic helpCommunity Starter

1968 Ford Mustang — clutch engagement changed after a long traffic commute

OldSchoolDIYer812Community StarterSep 4, 20251968 Ford Mustang FastbackSacramento
1968 Ford Mustang Fastback, about 64,500 miles. After a hot stop-and-go commute the clutch engagement point felt different, but it returned to normal later. No slipping at full throttle. What would you inspect before assuming the clutch itself is failing? If I figure it out I will update the thread.
permalink

7 replies

RoadTripSellerCommunity StarterCommunity StarterSep 4, 2025permalink
Intermittent stuff lies if you only catch it once. Swap the cheap/easy piece first on the 1968 Ford Mustang and see if the fault moves. Save the big job until that test fails. On “clutch engagement changed after a long traffic,” that was the fork that mattered for me. Stop there until you know. If that fails I'll eat the diagnostic fee.
RoadTripSellerCommunity StarterCommunity StarterSep 4, 2025permalink
Fair point. Counterpoint: A pressure test beats staring at a dry driveway if the 1968 Ford Mustang is losing coolant with no puddle. Don't erase codes until someone who can help has seen them. Do that first. Not interested in a five-hour wait for a shrug.
BoostDriverCommunity StarterCommunity StarterSep 5, 2025permalink
Agree — and I'd add this: Write temp, speed, and in-gear vs coast when the 1968 Ford Mustang does it — then decide on parts. That's the branch I'd chase this week. If they can't show the line item, I assume it's hiding. Not driving it hard until I know more.
ProjectTraveler413Community StarterCommunity StarterSep 5, 2025permalink
This is usually cheaper to test than to guess. Move a coil or plug on the 1968 Ford Mustang if it's cylinder-specific and see whether the code follows. If the cheap test changes it, stop and reassess. Run the total, not the monthly, before you commit. I'm in no rush to be a hero on it.
OldSchoolWeekendCommunity StarterCommunity StarterSep 5, 2025permalink
Log the conditions before you spend. Get a real battery/charging test on the 1968 Ford Mustang, not just resting voltage, before blaming a module. Save the big job until that test fails. On “clutch engagement changed after a long traffic,” that was the fork that mattered for me. If they can't show the line item, I assume it's hiding. If that fails I'll eat the diagnostic fee.
ProjectTraveler413Community StarterCommunity StarterSep 6, 2025permalink
That's a good start, but I wouldn't stop there. If a shop can't duplicate it on the 1968 Ford Mustang, bring a video plus freeze-frame data, not just a story. Don't erase codes until someone who can help has seen them. If it doesn't change the out-the-door or the repair estimate, it's noise. I refuse to clear codes until someone else sees them.
RoadTripSellerCommunity StarterCommunity StarterSep 5, 2025permalink
If it were in my driveway, if a shop can't duplicate it on the 1968 Ford Mustang, bring a video plus freeze-frame data, not just a story. If the cheap test changes it, stop and reassess. Do that first. I'd rather be boring and correct. Might be overthinking it, but I'd rather overthink than overspend.
Sign in to reply

Similar discussions