Transmission Hot Issue
#1
Launching!
Thread Starter
Join Date: Jul 2012
Location: Houston
Posts: 249
Likes: 0
Received 0 Likes
on
0 Posts
Transmission Hot Issue
I had a 4l80e Swapped to my 2006 Silverado, it was good for about a month until the whole Bell Housing grenaded. After that I've been having nothing but problems with my transmission overheating.
So far it's overheated 2 and now on my 3rd one witch Today again after 130 miles it overheated. I've tried everything possible such as new lines, TruKool 40k cooler, New converter, 3 trannys now, New radiator, New sensors, New fluid and that's pretty much everything.
Anyone else have a suggestions on what could be causing this?
So far it's overheated 2 and now on my 3rd one witch Today again after 130 miles it overheated. I've tried everything possible such as new lines, TruKool 40k cooler, New converter, 3 trannys now, New radiator, New sensors, New fluid and that's pretty much everything.
Anyone else have a suggestions on what could be causing this?
#2
TECH Fanatic
Pinched cooler line?
That trucool should be blazing hot when your transmission is supposedly overheating. If not, you've either got a fluid flow issue or you have a faulty harness causing the temp sensor to skew. Or. you could have a lockup issue.
That trucool should be blazing hot when your transmission is supposedly overheating. If not, you've either got a fluid flow issue or you have a faulty harness causing the temp sensor to skew. Or. you could have a lockup issue.
#3
Possibly and issue with the pcm?
How are they shifting, etc.. before they are overheating? Converter locking up as it should?
Have you dropped the pan on them to verify problems?
-Chris
How are they shifting, etc.. before they are overheating? Converter locking up as it should?
Have you dropped the pan on them to verify problems?
-Chris
#5
Launching!
Thread Starter
Join Date: Jul 2012
Location: Houston
Posts: 249
Likes: 0
Received 0 Likes
on
0 Posts
Tranny shift's good and everything, it overheats at cruising speed in the highway 3rd or 4th gear (3.23 gears) Converter is stock.
And no, as this is my 3rd transmission within 200 miles with the same problem.
No at first it was thru the radiator then cooler but now it's directly to the Tru-Cool 40k. I'm on the stock stall.
#6
Sounds like the converter isnt holding lock-up to me...
I cooked my current 60e the same way... drove great but suddenly stopped holding lock up... or it would cycle... tranny hit 230 before I realized it...
If you have swapped converters and have been through 3 trannies... I'd look at wiring, pcm, cooler lines, etc... sounds electrical more then mechanical but I could be wrong... Not a tranny guru by anymeans.
-Chris
I cooked my current 60e the same way... drove great but suddenly stopped holding lock up... or it would cycle... tranny hit 230 before I realized it...
If you have swapped converters and have been through 3 trannies... I'd look at wiring, pcm, cooler lines, etc... sounds electrical more then mechanical but I could be wrong... Not a tranny guru by anymeans.
-Chris
Trending Topics
#8
Launching!
Thread Starter
Join Date: Jul 2012
Location: Houston
Posts: 249
Likes: 0
Received 0 Likes
on
0 Posts
Well I've been driving it around for some time and at some points I get Transmission Hot message on my dash but I got my AEM Gauge hooked up to the pressure port on the Trans to read the temps
But the weird thing is that at some points when it shows hot It's only ~160-170F, but the transmission acts weird it revs up and shifts hard. Sometimes I see temps of 200-210 but it doesn't show Transmission Hot.
But the weird thing is that at some points when it shows hot It's only ~160-170F, but the transmission acts weird it revs up and shifts hard. Sometimes I see temps of 200-210 but it doesn't show Transmission Hot.
Last edited by TRD_Tundra; 01-28-2013 at 05:28 PM.
#10
Launching!
Thread Starter
Join Date: Jul 2012
Location: Houston
Posts: 249
Likes: 0
Received 0 Likes
on
0 Posts