BigMontana
Member
- 58
- 50
- 18
- Location
- Polson, MT
Yes, the main fan comes on at between 205 and 215, it previously was not always coming on or not always coming on at full speed because there was an intermittent leaky air seal at the fan clutch, but i fixed that two days prior to this issue. at some point i will have that fun cut out switch turned into a three position switch: on, auto, off, it's nice to pre-cool before a hill pull, and is also nice to turn the fan on for no reason on the way down a hill for some extra holdback (fan is about equivalent to 1/3rd power jake brake).Well group 55 are C3 pressure faults so something is going on with pressure or sensing that pressure.
that temp light is a programmed output generated by the controller and based off of its internal temperature sensing circuitry(sump temp sensor on the control module). The manual says it is supposed to illuminate when sump temp reaches 225F
Do you hear the engine fan kick in when coolant goes over 205F? They are louder than hell and hard to miss…
The P6 roller thrust bearing is all the way back under the rear top cover on the trans. Any parts will wind up down in the transfer case, and should find their way to the magnetic drain plug. That is how this is usually detected, parts found when transfer case oil is drained. It is not a very substantial roller thrust bearing so I don’t think it has enough parts to foul the transfer case scavenger pump Strainer. That is a secondary pumped loop that moves fluid from transfer up to main sump(probably for cooling), so not sure how it would effect overall transmission cooling. The transfer case might get warmer though…
There is zero fluid pressure i'm told, which would make sense as to why the trans was overheating and the main coolant was not. 225 is not terrible for a trans. i'm glad they put that light before a truly critical temp...I've run lots of axles and stuff right up to 235 and held them there for hours at a time...of course that's out of necessity on a half day mountain pull and i'm not going to be abusing a 1994 like that, but still i'm happy the warning hits at 225.
the oil inside the trans still has viscosity, and does not smell burnt, but there is quite a bit of metal flake in both the drained oil and the oil filters (shiny bits in the oil that you can see when you tilt the drained oil into sunlight, and shiny bits on the filters, this oil has only been used for about 2000 miles, and whatever oil remained after my half ass flush and filter change before leaving was 3 years and 700 miles old, and tested okay-ish via the cat fluid analysis lab.
It's looking like it'll be a more significant project than a few days here with the trans, and if i'm going to fix it, I'll try to fix it in a way that is a bit of an upgrade. make sure nothing goes wrong in this same area for a while.
I'm in Houghton, MI and a lot of float planes seem to be landing on the river here, another major stop for float planes is Ft. Benton, MT, not all that far from Polson and about 1200 miles from Houghton, MI, so maybe when it's time to get back here and drive it home i can find someone headed this way in a private float plane...cause there's not much for public long distance transportation up here.
Now i reckon would also be a decent time to switch to ATF instead of 15w-40 once i get a rebuild/rework or replace.
For now, back to bar study...because the pay difference between passing the bar exam and not is about $12k/yr and the next bar exam is Feb, so i'd prefer to pass in July (and find out in mid Sept).