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05:10:18 - 04/23/2024
General Dakota Board
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jms
Dodge Dakota
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1/17/2003
00:12:34
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 Subject: A.C. gets too warm: Help!
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Message:
I just recharged my AC system in my 97 Dakota v6 [2wd]. However, I noticed the AC doesn't get as cold as it should when the engine is hot. I had read a post a while ago about a suggestion of some material to 'wrap' the ac lines with to insulate them, but I couldn't find that thread. What should I use for insulating this lines, that handles the engine compartment heat well and will work for me? Thanks!
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Hurl
Dodge Dakota
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1/17/2003
12:31:44
| RE: A.C. gets too warm: Help!
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Message:
If you just recharged it and it's still not cold enough there is a problem. Insulating the ac lines won't fix it.
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jms
Dodge Dakota
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1/17/2003
12:51:44
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Message:
Actually, it just doesn't get cold enough for me. When the engine is cold [I.E., when I start it in the morning in the garage] and I turn the ac on, the temp drops to around 37 degrees, which is AWESOME. However, when I have been driving it on the highway for an hour or two and I turn it on, the temp only drops to about 45 degrees. I am using one of the thermometers that are inserted into the vent in the center of the dash. My guess, and what I remember seeing refered to in the other post I can't find, is that the lines don't 'stay' as cool as they should because they run about 4 inches away from the exhaust headers. Thus, insulating them at that point may make them more efficient. I just want the driving ac temp to be around 39-40 degrees, not 47. Since it is getting down to 37-35 when the headers are cold, and it won't go below 45-7 when they are hot, my best guess is that the lines are picking up radiated heat. I just want to get this done now, BEFORE I really struggle with it in the summer in southern california. Once again, any and all advice is welcome! Thanks for the point already made, and I would agree with you if the temp was still around 55 degrees or higher when the engine is cold.
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Lab Rat
GenIII
1/17/2003
12:58:36
| RE: A.C. gets too warm: Help!
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Message:
Sounds like you may have some air leaking thru the heater core. Check for a vacuum leak. Could be a sticking TXV as well (can't remember if the '97s were orifice tube or expansion valve systems). Use a pair of locking pliers to pinch off one of the heater hoses and go test it.
Definitely not a compressor problem. If it pulls down initially, time and time again, then the comp is fine.
LR
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