AC only blows hot

DUFFEY8709

MEMBER
DODGE TRUCK

1998 Dodge 1500 2wd 102,000 miles 5.2 my trucks ac used to work but about a year ago I accidentaly cross polarized my battery and had to replace starter and alterantor. After I made that stupid mistake my ac stopped working properly. The heater works fine but when I turn it on cold it doesnt blow cold air. Ive checked and replaced all my fuses. And havent found out whats wrong. Could you help me with my problem thanks.

5 Replies

BUBBA_KOSKI

MECHANIC
129 POSTS

You need to get it recharged. Get some freon at any auto store, and dont get r12 (you need a license anyways( its r130a

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Tuesday, February 6th, 2007 AT 7:27 PM

CARUNDELL

MECHANIC
602 POSTS

R-134A is the refrigerant used. And maybe some accurate diagnostics may be in order . There is a diode on the compressor circuit that may be blown, or the comp. Relay was damaged in the process. Is the HVAC system electronicallyc controlled or a manual set up? Let us know!

Chris

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Wednesday, February 7th, 2007 AT 2:23 PM

DUFFEY8709

MEMBER
5 POSTS

Im not sure if the hvac is manully or electronically controlled. How can u tell. Thanks for the information

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Wednesday, February 7th, 2007 AT 6:20 PM

DUFFEY8709

MEMBER
5 POSTS

I figured out your last question its electronically controlled the hvac system. Can I get freon anywhere and recharged? How much do du think that all might cost?

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Tuesday, February 20th, 2007 AT 12:28 PM

DUFFEY8709

MEMBER
5 POSTS

I figured out that the clutch coil connector is messed up because wenever I connect it the ac fuse blows out. Do I have to get a new compressor or just the clutch coil.

Thanks

duffey8709