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

410

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.....

410

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 out of 2 people think this is helpful.
5

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

410

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 out of 2 people think this is helpful.
10

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

1 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

S-10

Looking for a Used S-10 in your area?

CarGurus has 1,332 nationwide S-10 listings starting at $1,595.

ZIP:

Search Chevrolet S-10 Questions

Chevrolet S-10 Experts

#1 Andrew Olsen
Andrew Olsen
Reputation 2,280
#2 John Saffrahn
John Saffrahn
Reputation 970
#3 Trebor66
Trebor66
Reputation 960
View All

Related Models For Sale

Used Ford Ranger
187 Great Deals out of 5,786 listings starting at $1,650
Used Chevrolet Silverado 1500
1,724 Great Deals out of 172,383 listings starting at $1,400
Used GMC Sonoma
7 Great Deals out of 468 listings starting at $1,700
Used Toyota Tacoma
501 Great Deals out of 40,030 listings starting at $1,988
Used Ford F-150
2,176 Great Deals out of 204,450 listings starting at $1,499
Used Dodge Dakota
110 Great Deals out of 3,705 listings starting at $2,191
Used Nissan Frontier
313 Great Deals out of 25,493 listings starting at $2,300
Used Chevrolet Blazer
3 Great Deals out of 1,147 listings starting at $500
Used GMC Sierra 1500
794 Great Deals out of 67,648 listings starting at $1,995
Used Dodge Ram 1500
451 Great Deals out of 11,102 listings starting at $700
Used Chevrolet Camaro
187 Great Deals out of 31,082 listings starting at $1,217
Used Ford Mustang
447 Great Deals out of 45,460 listings starting at $2,700

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.