Dodge Dakota air conditioning quits when it gets warm

Nah, of all the people to find posting here! You don't post on the F1 ng do you? Trade it in! just kidding, you might have over charged it, not sure if it has a high pressure switch or not. It could have a bad relay or wire. I would say bring it in and have it looked at by a pro.

I agree it is liklley overcharge because a cheap gauge on the low pressure side of system is a poor way to charge the system because it does not give you a clue as to what is going on on the high side.

----------------- The SnoMan

"Creamy Goodness" wrote in news:J_GdnceFrYXU1CHZnZ2dnUVZ snipped-for-privacy@comcast.com:

overcharged.

High side pressure switch is shutting off the compressor.

Recver all refrigerant evacuate system properly recharge with clean refrigerant start motor put air ON and make sure your electrial fan (rediator fan) comes on and stays on, now cooling OK? from Dido

Or, bunch of air in the system. Good idea at this point to evacuate the refrigerant charge, vacuum out the air, and charge with a known weight of new refrigerant.

I had a similar prob, except the air cooling stopped to be replaced with warm air.... expert says that a vacuum line is blocked/broken and to check them all out, plus there are at least 2 one-way valves. If either fails it will default to warm air either at the heater or on the screen.

HTH

Molesworth

George,

I have the same symptoms on a 98 Dakota V6. Curious if you had the problem before adding refrigerant. Assuming you've fixed the problem by now, what did the trick?

Rick

Creamy Goodness wrote:

A 1998 will have a high-pressure cutout switch, as should any factory r-134a system. It is required even on an r-12 to r-134a conversion because r-134a runs at higher pressure. The switch is likely saving your system from blowing the safety relief valve... which would be good.