North American Turbocoupe Organization

A/C clutch screeching !! '86 XR7 ..
86 XR7 5spd Offline
Senior Member
my R134 converted but otherwise original 86 A/C clutch is screeching very loudly when I engage the A/C..

last summer it would screech a bit, then engage and be quiet.
this summer it seems like it just gonna keep on screeching...

what should I do ?

searched the forum..
doesn't seem to be any replacement parts on rockauto..

can I "rebuild" the clutch ?
new coil & somehow add fresh friction material ??
David T
T5 / ported E3 / .63 / 35# / K&N
2.5" exhaust w/ cherry bomb
30+ mpg! 8.2 0-60, [email protected] 1/4 (gTech)

Jeff K Offline
There is no friction material..... it is just metal to metal contact.

Check the clutch gap. If I remember correctly, max gap should be .028", with around .020" ideal. Gap can be adjusted with shimp after removing the clutch plate.

Possible compressor is about to fail generating high friction that the clutch cant handle.

Check clutch coil current draw. Should be around 4.5 Amps. If much higher of lower, replace coil.
Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 24 psi, forced air IC, water injection, BPV, Ranger cam, subframes, etc., etc.
86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP N2O, ignition, gears, suspension, etc., etc.
05 Taurus SEL Duratec daily driver
04 Taurus Duratec (wifes car)
02 Pontiac Grand Prix GT
95 Taurus GL Vulcan winter beater
67 Honda 450 Super Sport - completely customized

86 XR7 5spd Offline
Senior Member
ok took the clutch apart and cleaned it up..
there was a bit of oil on the plate..

BUT I think the main problem was the *alternator* belt(s) were a little loose,
and that's where the screeching was coming from.

tightened 'em up and we're all good.
David T
T5 / ported E3 / .63 / 35# / K&N
2.5" exhaust w/ cherry bomb
30+ mpg! 8.2 0-60, [email protected] 1/4 (gTech)

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