Up & down idle when A/C is on Only.

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Apr 30, 2009 | 6:22 PM

#11

73shark

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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 7, 2009 | 10:54 AM

#12

JCRAMOS

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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.

May 7, 2009 | 10:57 AM

#13

JCRAMOS

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Oil Weith??

What is the recommended oil weigh I should be using for my miles (98,000) ???

May 7, 2009 | 9:18 PM

#14

73shark

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From: KC, MO area

Same weight as originally recommended. Might consider switching to one of the new high mileage oils if your consumption is up.

Jul 22, 2019 | 2:42 PM

#15

ronand2020

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Check the belt idler pulley and make sure it’s not too loose

Oct 1, 2019 | 12:13 PM

#16

Christopher Lonske

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Quote:

Originally Posted by JCRAMOS

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???

I know its 10yrs later...
My 2003 Taurus did this.
It ended up being an air leak in the throttle position sensor.