A.C. intermittantly warm
Senior User
Joined: Sep 2007
Posts: 335
Likes: 1
From: Richmond, Texas
I'm having the same problem with my A/C, so I figured I'd post on this thread. After reading y'all's suggestions, I cranked-up my truck, popped the hood, and sure enough, the compressor clutch(?) was not engaging. I tapped it with a screw driver and it engaged, but only for about 20 seconds. I watched for a while and it would engage for 20-30 seconds and disengage for the same amount of time. It went through this cycle about five times and then I closed the hood. It blew very cold while engaged and very hot while disengaged.
Does this problem sound like it has to do with the gap, or another problem?
Does this problem sound like it has to do with the gap, or another problem?
Senior User
Joined: Feb 2004
Posts: 219
Likes: 0
From: michigan
that sounds like low refrigerant to me. About 2 cans in my grand marquis, every spring cures it.
Hoever, the climate control brain is failing now, way to often it decides car is cold, whoosh hot air, out the vents, shut it off and turn on again - works another 10 minutes. Wish it had that much heat in winter!
Hoever, the climate control brain is failing now, way to often it decides car is cold, whoosh hot air, out the vents, shut it off and turn on again - works another 10 minutes. Wish it had that much heat in winter!
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Fleet Mechanic
Joined: Feb 2006
Posts: 1,776
Likes: 5
From: Lorain County, Ohio
that sounds like low refrigerant to me. About 2 cans in my grand marquis, every spring cures it.
Hoever, the climate control brain is failing now, way to often it decides car is cold, whoosh hot air, out the vents, shut it off and turn on again - works another 10 minutes. Wish it had that much heat in winter!
Hoever, the climate control brain is failing now, way to often it decides car is cold, whoosh hot air, out the vents, shut it off and turn on again - works another 10 minutes. Wish it had that much heat in winter!
Your issue, on the other hand, is an obvious large refrigerant leak (just reseal those leaky Spring Lock fittings already, won'tcha
) coupled with a flaky Blend Door Actuator. You'll be in a very small minority if the issue is actually in the EATC Controller (brain box).
Unfortunately, replacing the BDA requires removing the whole instrument panel. It's not "hard", just time consuming. (Assuming your GM ~1990 or newer).
Senior User
Joined: Feb 2004
Posts: 219
Likes: 0
From: michigan
blend door actuator , that would be the annoying clicking noise from under the dash, that only goes away if the temp is set within 2 degrees of actual.!!!! Caused by cheap plastic parts that broke.!!! And doesn't quit even when you hit the off button. Naw I think this one is a different problem, I'm just blaming the brain because its to expensive for me to fix, and I need an excuse to replace the car when the big 3 bring my job back from mexico.
Lock spring fittings,?? at least none of the leak dye is showing up at the fittings I see. And 2 cans a year is cheaper then professionally repairing it. Besides 97 merc with a couple small dents, peeling paint is worth about $1500 if you can convince the high school kid the bda is nothing to worry about, with or without air,
Lock spring fittings,?? at least none of the leak dye is showing up at the fittings I see. And 2 cans a year is cheaper then professionally repairing it. Besides 97 merc with a couple small dents, peeling paint is worth about $1500 if you can convince the high school kid the bda is nothing to worry about, with or without air,
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