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Jeff G.
Dodge Dakota
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6/15/2005
10:56:04
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 Subject: A/C stops cooling...
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Message:
I have a '97 Dakota 4x4 w/ 318 V-8. On my 40 mile drive home from work, the A/C will "cut out" in about 20-25 miles into the drive. It started in the fall of last year and is doing it consistently this year as well. I can either be stopped at a stop light or at cruising speed when I notice, it doesn't matter. The air has only a slight coolness (it's not hot vent air). I can stop 5 miles from home, turn the engine off to fill up with gas and when I restart, it cools fine. I got a cheap A/C gauge and it shows refridgerant level to be OK. Anyone got any ideas or suggestions?
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pitadak
Dodge Dakota
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6/16/2005
13:18:15
|  RE: A/C stops cooling...
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Message:
Have the same problem with my 98.If I had to guess I would say low pressure switch, But it's so damn intermittent I haven't been able to check it. It's Always working great when I get home !
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mikec041
Dodge Dakota
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6/19/2005
21:34:40
| RE: A/C stops cooling...
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wife's 99 grand cherokee did same thing. noticed that the a/c lines actually had ice on them at firewall. replaced the low pressure switch and it seems like that solved the problem.
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GraphiteDak
GenIII
6/19/2005
23:59:50
| RE: A/C stops cooling...
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Message:
I was going to mention what Mike said.
Low Press sw either sticking OPEN (shutting off compressor coil) or sticking closed where the coil never opens when it needs to and the coil ices up.
Since it's not WARM air, it's probably icing up and restricting air flow.
Next time on your drive if it cuts out, turn the A/C OFF and just the VENT on. See if the airflow improves THEN switch the cooling back on.
If that works, the low pres sw stuck closed.
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Jeff G.
Dodge Dakota
JOIN HERE
6/20/2005
10:33:35
| RE: A/C stops cooling...
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Message:
Thanks to everyone for the replies. Where is the low pressure switch and is it something that can be replaced by the average "do-it yourselfer" or is it best done by a mechanic? Does the freon need to be evacuated? Again, thanks alot.
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