Trans cooler help
I live in Arizona & it's stupid hot here. I installed a cooler in Sept because of overheating. Well she purged on me again rolling down the hwy. I'm gonna bypass the Rad & see if that helps. Anyone run theirs like that?
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In cold weather that may help as a "trans warmer". Also not sure if the "Aux" cooler is up to the whole job in high heat. Probably good to set it right. Do know that is not high pressure. I've repaired my lines with fuel line and clamps with no issues.
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That transmission was designed to run 200-220 degrees, right about where your radiator should be, however an aux cooler is most always a good idea.
I'd hit the trans pan with an infrared thermometer to see what the temp is. Cooler lines aren't crushed? Vent tube isn't plugged? |
Did tranny cooler only come with tow package?
I have a 96 xj that seems to have no transmission cooler only lines from radiator. I've seen post of running too cool can be harmful, but i live in fl and would like to add an aftermarket cooler. Any advice on to do so or not and about tow package option.
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Originally Posted by DFlintstone
(Post 3271193)
In cold weather that may help as a "trans warmer". Also not sure if the "Aux" cooler is up to the whole job in high heat.
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I have been running mine like that for almost 2 years now and never had any problems with cold weather. Just make sure you get temperatures gauges for the hot side and cold side so you make sure that the cooler is working properly.
And you can monitor the temps as well. |
Originally Posted by dmill89
(Post 3272195)
^This, the "trans warmer" probably isn't too important in AZ, but what is the capacity of your cooler (BTU)? You'll need one with decent capacity in order to be able to keep the trans cool by it self with the radiator cooler bypassed.
Coolant runs around and through the middle of the tube -- trans fluid runs between the two walls of pipe. http://i1143.photobucket.com/albums/...tExchanger.jpg |
Neat pics JK253. That does have a bit of surface area for heat exchange though.
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Originally Posted by Radi
(Post 3271301)
That transmission was designed to run 200-220 degrees, right about where your radiator should be, however an aux cooler is most always a good idea. I'd hit the trans pan with an infrared thermometer to see what the temp is. Cooler lines aren't crushed? Vent tube isn't plugged?
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Originally Posted by jpmarine6786
(Post 3272631)
these charts online say a transmission should be from 120-180 degrees.
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Originally Posted by DFlintstone
(Post 3272643)
Maybe that's celsius ? The coolant is often at or above 210*. You wouldn't run fluid you wanted under 180* through that to cool it.
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Four wheeler.com claims the AW4s operating temp is form "125-176 degrees".
I'm also putting a cooler on my Jeep this week. |
Originally Posted by JK253
(Post 3272454)
The heat exchanger only holds a few ounces of trans fluid at best; I don't think bypassing it does a whole lot in terms of temp reduction.
Coolant runs around and through the middle of the tube -- trans fluid runs between the two walls of pipe. http://i1143.photobucket.com/albums/...tExchanger.jpg Any decent sized plate and fin cooler should do fine, but only larger tube and fin coolers (which are less efficient at conducting heat) will have adequate capacity. |
It seems you have a point>
Transmission and Transaxle 175 Degrees: 100,000+ miles (Normal is typically 179 to 195 degrees)Heat Temperature Failure Chart 200 Degrees: 90,000 miles 225 Degrees: 55,000 miles (Pressure Drops) 250 Degrees: 25,000 miles (Valves Stick) 275 Degrees: 17,000 miles (Varnish Forms) 300 Degrees: 4,000 miles (Seals & Clutches Burn) 325 Degrees: TRANSMISSION FAILURE That's from here> http://myautomatictransmission.com/t...ture-chart.htm |
Originally Posted by dflintstone
(Post 3272643)
maybe that's celsius ? The coolant is often at or above 210*. You wouldn't run fluid you wanted under 180* through that to cool it.
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