94 Explorer stalling on defrost
Thread Starter
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Senior User
Joined: Jul 2004
Posts: 475
Likes: 0
From: Winnipeg, Mb. Canada
94 Explorer stalling on defrost
Put the temp control to defrost the other day and the rpms dropped to the point of stalling out. Not a gradual loss but real quick. If I'm in park or neutral, it doesn't stall but drops to about 500rpm. Any ideas?
Cargo Master
Joined: Apr 2006
Posts: 3,215
Likes: 8
From: WV
I think when you're in defrost mode that the AC compressor runs a little bit. This is probably the source of the RPM drop.
Thread Starter
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Senior User
Joined: Jul 2004
Posts: 475
Likes: 0
From: Winnipeg, Mb. Canada
Yup, but something is not telling the computer to increase rpms or the computer just isn't recognizing it.
Junior User
Joined: Jan 2005
Posts: 96
Likes: 0
From: Elkridge, MD
I had the exact same problem on my 96' Explorer. I open the hood and watched the AC compressor. It would try to engage and then I saw a spark and it stopped. There was something binding up in the compressor. I shot it with some WD40 and no lie, it started spinning fine. That was almost 4 years ago. If I had taken it to the dealer i'm sure they would have charged me for a new compressor. Just wanted to put this out there in hopes that it will help someone else one day.
Fleet Owner
Joined: Mar 2003
Posts: 24,724
Likes: 74
From: Blue Hill Township
Clean up your IAC motor to make sure that it can compensate enough for the added load from the A/C compressor. Remove the belt, engage the A/C clutch with a jumper and make sure that it isn't binding up.
