trans temperature downhill
I have a 95 Chevy Roadtrek 210 (G30 ext) 4L80 trans. HD cooling and factory aux trans cooler. On long uphills engine temp and trans temp climb, as expected, but on the downhill engine temp goes down ...
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Sorry for the delay (went to spam file) Answering questions: after temp gauge was installed 245 degrees (trans, engine temp is fine). Radiator has been flushed but never rodded. using IV trans oil (VI came out after this was built) going to try synthetic next change. cooler is mounted in
front of A/C condenser. Changed ATF after every trip (its no longer red and smells burned)
Going downhill I sometimes smell hot oil. I noticed fresh oil around driveshaft seal after that.
Some dripped on exhaust. Cleaned area up, no more leaking. I think it was from excessive heat.
New issue, but only because I did not have trans temp gauge before. Added the gauge because
it went into limp mode (2nd gear only) 2 times in Canadian Rockies (steep ski resort area).
Changed oil and filter immediately in next town. Ext cooler is factory 11" X 5" stacked plate.
Seems rather small but i read stacked plate type are the most efficient and are not very big.
Has H.D. 1 ton cooling option but I was told by chevy the aux cooler is the same no matter what extra cooling was ordered. that makes no sense to me. Added gauge has sender in pressure test port. Compared temp readings with GM tech 1 diagnostic computer and temp on the flats is within 5* (165-185) In the mountains tech 1 reads higher and increases and decreases faster, but sender is internal for that one. Hope i answered everyones questions. thanx Mike
front of A/C condenser. Changed ATF after every trip (its no longer red and smells burned)
Going downhill I sometimes smell hot oil. I noticed fresh oil around driveshaft seal after that.
Some dripped on exhaust. Cleaned area up, no more leaking. I think it was from excessive heat.
New issue, but only because I did not have trans temp gauge before. Added the gauge because
it went into limp mode (2nd gear only) 2 times in Canadian Rockies (steep ski resort area).
Changed oil and filter immediately in next town. Ext cooler is factory 11" X 5" stacked plate.
Seems rather small but i read stacked plate type are the most efficient and are not very big.
Has H.D. 1 ton cooling option but I was told by chevy the aux cooler is the same no matter what extra cooling was ordered. that makes no sense to me. Added gauge has sender in pressure test port. Compared temp readings with GM tech 1 diagnostic computer and temp on the flats is within 5* (165-185) In the mountains tech 1 reads higher and increases and decreases faster, but sender is internal for that one. Hope i answered everyones questions. thanx Mike
