Ask Me Help Desk - A/C blowing out hot air.

A/C blowing out hot air.

I've done everything I possibly can so far... I filled the A/C with a sealant, and some more freon... and it worked for like 2 months... then a few days ago it started to get a little warmer, so I bought some more freon and put it in there again... it didn't do anything for some reason.Yesterday I thought, well maybe there's too much freon in the system, and I bled it for like a minute... then I added another can of sealant and some more freon... still hot air blowing out... and it won't take the rest of the can.Do you think I need to bleed the system some more and start fresh with a couple of cans of fresh freon?Thanks for any helpful advice you can give. :)

Check your filter and make sure your A-coils are clean. 50% of a/c problems are air restriction. You need guages to check for the systems' levels. You may have a leak if all this checks out OK.

XenoSapien

Adding those sealants are not good for any A/C system. Listen closely for a vacuum leak. A vacuum leak my be causing the damper not to operate. Have you check that the compressor is kicking on?

You need to take your vehicle to an A/C shop. You must have a slow leak and now it's so low the system has shut off the compressor.

XS : I don't know where you got those statistics : 50% air restrictions? My experience has been with electrical concerns ranging from a burnt fuse to a burnt programmer/control module, and system leaks. It would take quite a bit on most vehicles to block off any coils. What's an A-coil? That's a new one on me.

Esq : You're correct that the sealants will cause further damage to system components, mostly sensors, etc, in the lines. But it isn't vacuum leaking. It's pressure. It can be heard if large enough, but a smaller leak can usually be found with a special dye added to the system with a partial charge. Many shops will diag this for you at little or no charge... hoping you'll buy the recommended reapir(s). Damper?

Safety is paramount! The system pressures can run quite high, especially if the system is running on a hot day.

Quote:

Originally Posted by XenoSapien

Check your filter and make sure your A-coils are clean. 50% of a/c problems are air restriction. You need guages to check for the systems' levels. You may have a leak if all this checks out ok.

XenoSapien

Hi, and thanks for your response, I appreciate it. I don't know what an A-coil is, please explain that to me.

Quote:

Originally Posted by esquire1

Adding those sealants are not good for any A/C system. Listen closely for a vacuum leak. A vacuum leak my be causing the damper not to operate. Have you check that the compressor is kicking on?

Hi, and thanks for your response, I appreciate it. You may be right there, it may have caused some air restriction that XS was talking about. I don't hear any vacuum leak. The compressor was kicking on a lot more before, and now it is not kicking in that much, maybe for like 10 seconds every 45 seconds. What's a damper?

Quote:

Originally Posted by CaptainRich

You need to take your vehicle to an A/C shop. You must have a slow leak and now it's so low the system has shut off the compressor.

XS : I don't know where you got those statistics : 50% air restrictions? My experiance has been with electrical concerns ranging from a burnt fuse to a burnt programmer/control module, and system leaks. It would take quite a bit on most vehicles to block off any coils. What's an A-coil? That's a new one on me.

esq : You're correct that the sealants will cause further damage to system components, mostly sensors, etc, in the lines. But it isn't vacuum leaking. It's pressure. It can be heard if large enough, but a smaller leak can usually be found with a special dye added to the system with a partial charge. Many shops will diag this for you at little or no charge ...hoping you'll buy the recommended reapir(s). Damper?!

Safety is paramount! The system pressures can run quite high, especially if the sytem is running on a hot day.

Hi, and thanks for your response, I appreciate it. I called my mechanic and he may be able to see it today. If the system is so low on freon, then why won't it take more? If the sealant has caused any damage, how can I reverse that easily? I tried the sealant with the dye, but see nothing pink anywhere. I don't have a lot of money for repairs, thanks for your advice, please keep it coming.

Bump...

Quote:

Originally Posted by Specialkm

If the system is so low on freon, then why won't it take more?

I don't know if the systems working. You may have a faulty service port... Hopefully your mechanic will find your problem quickly.

Quote:

If the sealant has caused any damage, how can I reverse that easily?

IF there is any damage, the only way to get rid of the failed component is to replace it.

Quote:

I tried the sealant with the dye, but see nothing pink anywhere.

Again, I don't now if the systems functioning properly and moving the dye around. If it is moving around, and there is a leak, it may be the evaporator core (evap core) That is inside the car and cannot be seen but it can still be detected.

Quote:

I don't have a lot of money for repairs, thanks for your advice, please keep it coming.

Again, talk to your guy about costs for diag and for any repairs. Sometimes if all you pay now is the diag fee, some or all of that may be applied towards the repair.
Let me know what your mechanic finds.
Good luck!