Need help with ac - AC Auto Repair Help Forum


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Need help with ac

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Auto Repair Home>> Automotive Repair>> AC Auto Repair Help Forum

Ric
New User

May 7, 2019, 5:29 AM

Post #1 of 3 (1903 views)

Need help with ac	Sign In

I have a 2000 Silverado with a 4.3 vortec engine . 3 years ago the AC started to blow hot air so I put in some freon and it worked ok for a year so I put freon every time. This time I put freon ,but when I rev the engine to 2000 rpms, it's like it loses all the freon but I don't see any leaks. The truck is got 210000 miles .can somebody help.

Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

May 7, 2019, 7:50 AM

Post #2 of 3 (1886 views)

Re: Need help with ac	Sign In

Quote

it's like it loses all the freon but I don't see any leaks.

Since refrigerant is an odorless and colorless gas, what exactly are you looking for?

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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.

Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

May 7, 2019, 9:20 AM

Post #3 of 3 (1882 views)

Re: Need help with ac	Sign In

Ric! Ditto with Hammer. This should hold 29oz of 134a, pure product into a well held vacuum. Anything less than doing that is the beginning of the end you need that to know if it works at all even for 1/2 hour then find the leak.
Chances are you have no clue what was in product you used or how much you needed to judge the rate of leakage. Yes you can get away with murder with lots of luck a time or two but you've exhausted that so time to find and fix it or better yet get some idea from a pro A/C shop of what it will take so you can make a decision on what to do.
If you have no clue what product you used before or this time if it contained anything but pure 134a it's got to be wrecked. You wont like it now about 20 years old miles per year seem fine but it's still that many miles the system doesn't do that much or already redone before you owned it and easily due again,

T

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