4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

A/c works but...

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Old 06-15-2008, 02:04 PM
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ackuric
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Default A/c works but...

When traveling at highway speeds (55+), the a/c clutch will not engage, but once I slow down below 45 mph the clutch kicks in and cold air begins to blow, and it will work just fine even while increasing speed back to 55+. Anyone know whats up? Pressure switch? I've tested the r-134a and the pressure is good (40psi)
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