New overheating issue

05' Ditry Duramax

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May 3, 2008
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Port Orchard Washington
I have a bulit trans in the truck for about 2 years. I've put less than 30k miles on it. Took it out today and it started getting hot. In the past it has not been above 150* roughly (using the factory dash gauge). Today it climbed to over 200* going down the highway and still climbing. I pulled over and let it cool down. The lines directly out of the trans were hot untill they make the 90* headed towards the cooler. The cooler was ice coold as well as both lines. Ambient temp was around 40*. First time this trans has ever seen any heat like that since the trans was built by a shop in Oregon.Once I got home, I pulled the left line on the cooler. There was a bunch of material in the fluid. I didn't get much fluid from it. I pulled the right line off the cooler and didn't get any fluid. I took a mirror and looked up inside the cooler and found nothing preventing flow in either side. I thought about taking the cooler off and have it flushed to see if it is plugged. The truck does sit for weeks and sometimes months at a time,outside but under cover. I concerned about the amount of material in the fluid. If the cooler isn't plugged I was going to change both filters and refill the trans. Maybe one of the filters is plugged up or restricting flow. The trans was shifting fine in all forward gears and reverse,just getting hot. It was built by a reputable shop in Oregon. Like I said, I've never had an issue with it untill today. I could smell oil when we came to stop lights. Didn't see any oil leaking from the vent tube on top. I did not climb up in there to see if any had actually came out. I didn't see any down on the trans. I did a stall test and I couldn't get the truck to rev higher than 1,000-1,200 without wanting to push through the brakes.


Suncoast Gmax 5 speed kit
PI converter (Mike L converter)
transgo shift kit
Hughs deep pan
Amsoil synthetic oil


Thanks in advance guys
 

05' Ditry Duramax

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I would say it took awhile. It was climbing slowly the whole time I was driving, around a hour of highway driving at 65mph. Roughly 40 miles. Some slower driving with stop lights to get to the highway.
 

05' Ditry Duramax

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Not what I wanted to hear. So I guess I will hook up the computer and see what the slip is.

I guess I'll change the fluid and filters while I'm at it.

Can I send the converter back to PI to get fixed? I really like it and dont want to spend the money for a new one.

Thanks for the reply Mike.
 

Mike L.

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Aug 12, 2006
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Fullerton CA
Not what I wanted to hear. So I guess I will hook up the computer and see what the slip is.

I guess I'll change the fluid and filters while I'm at it.

Can I send the converter back to PI to get fixed? I really like it and dont want to spend the money for a new one.

Thanks for the reply Mike.

They will take care of it. Talk to Terry.
 

AubleAK

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Aug 5, 2011
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Glennallen, AK
PI was way good to deal with when i had to send my converter back to them. gave me a new converter and payed for half the shipping