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Username Post: equinox A/C        (Topic#356546)
REBORN55 
Frequent Contributor
Posts: 2223
REBORN55
Loc: DeSoto, Illinois. 62924
Reg: 01-21-01
05-24-19 11:06 AM - Post#2767023    

have a 2012 equinox--4 cyl. A/c is starting to blow warm--first start up this morning backing out of garage was nice and cool---further we drove it got less effecient---to the point of it barely getting cool---87 degrees out and it is blowing 70 out the vents on high--pressures are 30 on low side---250 high side. need a little guidance---as to the possibilities of expansion valve having dirt in it or blend door not working righ as with other GM products--thanks

Ken http://www.picturetrail.com/reborn55


 




Shepherd 
Frequent Contributor
Posts: 1862

Loc: Lake George, NY
Reg: 11-11-15
05-25-19 04:21 AM - Post#2767057    
    In response to REBORN55

Do the low side pipes under the hood feel cold to the touch when this happens?



 
REBORN55 
Frequent Contributor
Posts: 2223
REBORN55
Loc: DeSoto, Illinois. 62924
Reg: 01-21-01
05-25-19 05:25 AM - Post#2767062    
    In response to Shepherd

I don't remember will double check---was working fine last night


Ken http://www.picturetrail.com/reborn55


 
gchemist 
Senior Chevytalk Moderator
Posts: 24952
gchemist
Loc: Austin, TX 78748
Reg: 05-09-00
05-26-19 04:03 PM - Post#2767140    
    In response to REBORN55

Are the cooling fans turning on?

'83 Silverardo XST - ZZ4 powered
'95 Jimmy SLT (Bought @131,814)
'96 GMC Jimmy LS Ret. @236651 miles


 
REBORN55 
Frequent Contributor
Posts: 2223
REBORN55
Loc: DeSoto, Illinois. 62924
Reg: 01-21-01
05-26-19 04:56 PM - Post#2767145    
    In response to gchemist

Yes

Ken http://www.picturetrail.com/reborn55


 
gchemist 
Senior Chevytalk Moderator
Posts: 24952
gchemist
Loc: Austin, TX 78748
Reg: 05-09-00
05-27-19 03:42 AM - Post#2767160    
    In response to REBORN55

At 85 degrees, low side pressure should be 45+ PSI or so. ~225-250 on the high side. Is the compressor a variable pressure type? I think most modern compressors are variable pressure now. Sorry, I don't have enough knowledge on how those work. Newer systems do set codes for scanners to read.

Definitely check blend door movement.

'83 Silverardo XST - ZZ4 powered
'95 Jimmy SLT (Bought @131,814)
'96 GMC Jimmy LS Ret. @236651 miles


 




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