3" BDS Lift | AEV Steering Kit with BDS Dampener | 17x8 Black Rock Viper 900 Wheels (matte black of course) | 315/70r17 Goodyear Wrangler Duratrac | Superior Gear 5:13's | Detroit Truetrac | Superchips! | Gen Right Hood Vents
How desperate is the need for a tranny cooler? I understand the more offroading the more necessary but how bad does it get without one?
I've over heated mine twice now, both times off-road, once stuck in mud rocking it it, the other on a high RPM, steep, muddy hill climb. both times I put it in No Gear and shut her off as soon as I heard it for about 1/2 hour. according to my readout, I've gotten it up to 220...the thing that sucks is my auto's normal operating temp is 200. that's on the street, no heavy traffic. she runs hot even when not being pushed.
I'll be getting a cooler soon. I recommend all automatic JK owners install an aux transmission cooler, similar to the one Jimbo has described.
FYI, the jeep auto overheats any time you load the tranny for an extended period of time ie: Long hills in high gear--idle in traffic, in HEAT--pulling trailer in HEAT-pulling trailer, up hills--pulling trailers in 4hi--playing in sand in 4hi
The Chrysler recalls (J30) have been because of jeep auto "fires", the flash point of ATF-4 is 374° and it surges out of the dipstick tube-hits the passenger side exhaust header and--BAM--fire
If you;re still under warranty--good luck
If the excessive heat "EATS" your tranny (no fire) and you're under warranty, then Chrysler will replace your tranny FREE and install and aux cooler--KEWL
B&M makes a relatively decent one and mine is JCWhitney (B&M), but the easiest route is to--
Google "jeep aux cooler" and you will get 100's of articles about recommendatios and I think most are a B&M ser # (?), somebody might post that one
Mine is an aux cooler for an 18,000' GVW vehicle, which is a little bigger than needed--MAYBE, mine works fine and any of them are simple to install, mine took longer, because I installed two transmitters for temp indication !!