AC headache
#1
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Hey all. New to this site but owned my 1500 conversion van since new in 03. Only has about 59k original.
I've had issues with the ac for awhile now. I've replaced the compressor, front expansion valve, drier, and condenser. Ive taken care of what I had initially thought was an overheating issue due to a faulty ac system. Ended up replacing radiator and flushing, replace thermostat, fan clutch and burp system. Even added 2 pusher electric fans on condenser. Runs at 180-186 consistently now. With ac on in hotter temps engine temp slowly climbs sometimes as high as 216. When running the ac after numerous vac and recharges temp at vents get to 40ish when it's ambient temp is 73. When it gets upwards of 95 degrees, vent temps are only 73 at best. I also notice that vent temps gradually get warmer if I am at a higher fan speed (compressor always engaged). Can't seem to figure out where I went wrong. I am by no means an ac guy so any input would be awesome before I rip my hair out.
Thanks folks!
I've had issues with the ac for awhile now. I've replaced the compressor, front expansion valve, drier, and condenser. Ive taken care of what I had initially thought was an overheating issue due to a faulty ac system. Ended up replacing radiator and flushing, replace thermostat, fan clutch and burp system. Even added 2 pusher electric fans on condenser. Runs at 180-186 consistently now. With ac on in hotter temps engine temp slowly climbs sometimes as high as 216. When running the ac after numerous vac and recharges temp at vents get to 40ish when it's ambient temp is 73. When it gets upwards of 95 degrees, vent temps are only 73 at best. I also notice that vent temps gradually get warmer if I am at a higher fan speed (compressor always engaged). Can't seem to figure out where I went wrong. I am by no means an ac guy so any input would be awesome before I rip my hair out.
Thanks folks!
#2
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If you can get to it easily, pull the blower fan out, and see how much crud has accumulated on the evap core. Probably need to clean that out. Make sure the condenser is clear as well. Probably wouldn't hurt to just flush it with a hose..... blow all the accumulated crap out. (condenser, not the evap core.
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Running hotter with a/c on in high temps isn't a surprise. So long as the engine temp stays in the 'safe' range, yer good.
![Big Grin](https://dodgeforum.com/forum/images/smilies/biggrin.gif)
Running hotter with a/c on in high temps isn't a surprise. So long as the engine temp stays in the 'safe' range, yer good.
#3
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If you can get to it easily, pull the blower fan out, and see how much crud has accumulated on the evap core. Probably need to clean that out. Make sure the condenser is clear as well. Probably wouldn't hurt to just flush it with a hose..... blow all the accumulated crap out. (condenser, not the evap core.
)
Running hotter with a/c on in high temps isn't a surprise. So long as the engine temp stays in the 'safe' range, yer good.
![Big Grin](https://dodgeforum.com/forum/images/smilies/biggrin.gif)
Running hotter with a/c on in high temps isn't a surprise. So long as the engine temp stays in the 'safe' range, yer good.
#4
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These things have a valve that cuts off the coolant flow to the heater when you have recirculate going. Mine has a second valve someone added the I can manually cut the flow of hot coolant to the heater core. Makes a big difference in the temp coming out the vents. Doubt it would do anything for the engine temps going up though.
#5
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These things have a valve that cuts off the coolant flow to the heater when you have recirculate going. Mine has a second valve someone added the I can manually cut the flow of hot coolant to the heater core. Makes a big difference in the temp coming out the vents. Doubt it would do anything for the engine temps going up though.
#6
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Might not be a bad idea to pay someone to completely evac the a/c system, and recharge it.... make sure you have the correct amount of refrigerant/oil.....
The 'runs cooler at angle' thing does indeed sound like an air pocket in the cooling system somewhere. I know the truck are notorious hard to get all the air out.....
The 'runs cooler at angle' thing does indeed sound like an air pocket in the cooling system somewhere. I know the truck are notorious hard to get all the air out.....