my truck a/c unit been running perfect for 3yrs. all of a sudden started blowing hot air. A Pressure shows high over charged. what could be wrong

5

Asked by Jun 29, 2013 at 01:07 AM about the 2002 Chevrolet S-10 2 Dr LS Standard Cab LB

Question type: Maintenance & Repair

6 Answers

420

Have you varified that your compressor is engaging. The pressure you are reading could be the pressure from the compressor being equalized...did you recently add refrigerant to your truck?????

5

My compressor is engaged, its doing what its suppose too. Also, no I have not put freon in. I was, but like I said before the pressure is very high. I am slowly dying in this heat. Pls try to help.....

420

ok have no fair under dog is here: I will try to help you, first thing we have to confirm that the compressor is realy on, have someone turn the ac control on and off while observing the gauge while doing this, your gauge should respond when on gauge should go down, in the off position the gauge should go up and equalilze. varify that and get back for further instruction.

2 of 2 people found this helpful.
5

ok confirmed compressor is really on!!!! now what

420

try evacuating the system bring pressure down to range in the green or 31 psi, before doing all that make sure that your cabin air filter is clean, also give the condenser coil a bath with a mild liquid soap hose it down throughly.. simple green works perfectly, before evacuating do those two steps first, its just process of elimination, check your before and after discharge temperator with a thermometer. we are almost there, let me know how you are making out.

2 of 2 people found this helpful.
10

Coil is clean pressures are at 34 psi still blowing hot what next . ?

1 of 1 people found this helpful.

Your Answer

S-10

Looking for a Used S-10 in your area?

CarGurus has 1,210 nationwide S-10 listings starting at $1,550.

ZIP:

Chevrolet S-10 Experts

  • #1
    Andrew Olsen
    Reputation
    2,510
  • #2
    John Saffrahn
    Reputation
    1,050
  • #3
    Trebor66
    Reputation
    1,030
View All

Related Models For Sale

Used Ford Ranger
178 Great Deals out of 5,464 listings starting at $1,250
Used Toyota Tacoma
733 Great Deals out of 50,723 listings starting at $1
Used Chevrolet Silverado 1500
2,702 Great Deals out of 196,296 listings starting at $699
Used Ford F-150
3,211 Great Deals out of 239,209 listings starting at $1,300
Used GMC Sonoma
4 Great Deals out of 401 listings starting at $2,150
Used Nissan Frontier
394 Great Deals out of 25,341 listings starting at $1,800
Used Dodge Dakota
108 Great Deals out of 3,581 listings starting at $1,200
Used GMC Sierra 1500
1,243 Great Deals out of 71,062 listings starting at $1,750
Used Chevrolet Blazer
4 Great Deals out of 923 listings starting at $950
Used Dodge Ram 1500
414 Great Deals out of 11,101 listings starting at $1,499
Used Chevrolet Tahoe
856 Great Deals out of 44,848 listings starting at $1,980
Used Jeep Wrangler
457 Great Deals out of 20,103 listings starting at $3,000
Used Chevrolet Avalanche
180 Great Deals out of 5,154 listings starting at $2,250

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.