a/c stops working when engine warms up???
Ok i have started having an intermittent a/c problem.. has been getting worse over the last couple months.
This is on a 98 dodge ram 1500
It started about 4 months ago, did it one time while i was driving down the interstate, but started working again after a couple minutes. And it has been getting worse ever since. Now it is all the time when the engine is hot & it is above 70 degrees outside.
Let me start with had pressure levels checked by a pro & he said levels are fine
When it is cool out & I first start the truck the a/c works perfect. But when it is hot outside or the engine is hot (normal operating temp, not overheating) the a/c does not blow cold at all, compressor is not kicking on, air blowing out is at least 85-90 degrees.
When the a/c is working, and compressor is kicking on, it will switch from max to regular a/c no problem & have no issues with changing the vents. And the temperature at vents was around 58 degrees with an outside air temp of 88 degrees...
The mechanic jumped out the low pressure switch & still nothing. I have checked the power running out to all the sensors & they all have a reading of 13 +/- volts.
I have tried everything I can think of, even soaking the condensor with cold water, thinking that may be an issue. Even put an ice cube on the temperature sensor (wasnt sure if it was tied into the a/c or not).. I told you I am trying everything i can think of...
When the a/c is working & I go driving, the a/c will stop working all by itself when stuff heats up, I do not even touch the switch. It did this today while idiling in the yard. A/C was working, let everything heat up & a/c stopped working, so I do not think it is a switch issue.
*EDIT POST* - I just checked it again after truck sitting for a couple hours, so engine is not hot, but a/c still wont blow cool.
Outside temp is 97 degrees
Any ideas you can provide will be greatly appreciated. I have to drive from NC to FL next week & it is gonna be a HOT trip...
'98 Ram 1500 SLT
Quad Cab, Long Bed
no mods YET
Last edited by racerboy6996; 07-04-2006 at 12:08 PM.