Up & down idle when A/C is on Only.
April 30th, 2009 | 6:22 PM
#11
Administrator
Joined: Apr 2006
Posts: 11,043
Likes: 171
From: KC, MO area
Adding too much can be disasterous. Liquid doesn't compress, therefore you get what's called slugging the compressor and that's just really bad. new2me and in2pro had good advice. Start slow. Let us know how it works out.
May 7th, 2009 | 10:54 AM
#12
Thread Starter
CF Beginner
Joined: Apr 2009
Posts: 14
Likes: 0
A/c, idle
Well I got both of my problems corrected with all your help, thanks, I clean the throttle body and I fill the a/c with r134 but I over filled it and it started making some weird sounds so I finally got a better gauge and I let some r134 drain out and all is o.k. for now.
October 1st, 2019 | 12:13 PM
#16
CF Beginner
Joined: Oct 2019
Posts: 1
Likes: 0
Hi, I have a 03 Tahoe that is giving me problems when I turn on my A/C the engine start to idle up and down this would stop if turn off the A/C, also the A/C some times blows hot air when I have the rough idle issues, I have 95,000 miles on it I have not re-filled new refrigerant. Anyone knows what is going???
My 2003 Taurus did this.
It ended up being an air leak in the throttle position sensor.
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