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88 Comanche Power Trans Switch

988 views 6 replies 5 participants last post by  CanadianJeep86 
#1 ·
What is the power trans switch on the dash for?
it's an auto long bed Pioneer model 4*4 4.0 non HO
 
#2 ·
Don 79 TA said:
What is the power trans switch on the dash for?
it's an auto long bed Pioneer model 4*4 4.0 non HO
It adjusts the shift points of the transmission. Basically makes it rev higher before shifting, mostly used while pulling a load or driving off-road. All 4.0 AW4 MJ's, XJ's have them from '87 to '91.
 
#6 ·
It may adjust the shift points, but it also flows more fluid through the tranny and torque converter, which helps it lock up better. That's what I was told by a Jeep mechanic, anyway.
 
#7 ·
MJDriver said:
It may adjust the shift points, but it also flows more fluid through the tranny and torque converter, which helps it lock up better. That's what I was told by a Jeep mechanic, anyway.
Oh really? well if I'd have known that.... I leave it off because it makes it harder on gas, but if it helps it lock up better for more tranny life then I'm all for it:laugh:
 
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