SPONSORED LINKS

A/C not blowing cold air

Tiny
TONY02
  • MEMBER
  • 2002 TOYOTA COROLLA
  • 135,000 MILES
The A/C doesn’t blow cold, the compressor is engaging, and I hooked up my gauges to make sure there is refrigerant in it and there is, but it’s not blowing cold. I also felt the low-pressure line and it doesn’t feel cold or isn’t “sweating” like it should be it’s just dry.
SPONSORED LINKS
Sunday, June 12th, 2022 AT 3:57 PM

5 Replies

Tiny
BORIS K
  • MECHANIC
  • 799 POSTS
Hello,

As you have gauges can you please confirm the system pressure when A/C is switched off and low/high pressure when system is operating.

Also is the cooling fan operating when the A/C is switched on?

Cheers, Boris
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Monday, June 13th, 2022 AT 2:03 AM
Tiny
TONY02
  • MEMBER
  • 70 POSTS
The low side is around 50-60 and the high side was around 150-200. Yes, the cooling fans are working, but I also notice that the compressor clutch stays on it does not disengage.
Was this
answer
helpful?
Yes
No
Monday, June 13th, 2022 AT 3:27 AM
Tiny
BORIS K
  • MECHANIC
  • 799 POSTS
Hello,

The low-pressure side looks a bit high, you should have about half, 26-36 PSI at 1500 RPMs.
The high pressure is also a bit low, expect to see 225-250 PSI.
You either have too little refrigerant or a possible faulty expansion valve.

Cheers, Boris
Was this
answer
helpful?
Yes
No
Monday, June 13th, 2022 AT 6:42 AM
Tiny
TONY02
  • MEMBER
  • 70 POSTS
Upon looking for expansion valve I found the evaporator core with it, and it was really filthy and dirty. My guess is the evaporator core from being dirty was giving me the issue.
Was this
answer
helpful?
Yes
No
Wednesday, June 15th, 2022 AT 6:12 PM
Tiny
BORIS K
  • MECHANIC
  • 799 POSTS
Hello,

It does sound plausible that this is cause of the air-conditioning not blowing cold.

Please keep us posted on the outcome

Cheers, Boris
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Friday, June 17th, 2022 AT 5:39 AM

Please login or register to post a reply.

Related Air Conditioner Not Working Content

Fix an Air Conditioning Not Working Video
VIDEO
Fix an Air Conditioning Not Working Video
Instructional repair video
Air Conditioner Not Working
GUIDE
Air Conditioner Not Working
Like any sub system in today's car a problem and be minor or a little more involved, this guide will help you find the problem and perform repairs. You can be the judge if...
VIEW MORE

Sponsored links