 |
|

05-17-2006, 06:47 AM
|
 |
Hummer Deity
|
|
Join Date: Apr 2004
Location: Vegas
Posts: 8,750
|
|
Re: Transmission Running Hot
Phil,
looking at your pictures of your install of the Hayden Ultra Cool I can't install the unit in the same place due to the fact that the innner cooler for the S/C is currently there. I have no doubts that installing a trans cooler where you have it would reslut in much cooler trans temps.
The other possibility might be to place the additional trans cooler in front of the radiator and put a fan on it to make up for the lack of air coming threw the front grill.
|

05-17-2006, 01:14 PM
|
 |
Hummer Veteran
|
|
Join Date: Apr 2006
Posts: 201
|
|
Re: Transmission Running Hot
Has the overheating been since the vehicle was new? or has it started since service?
If its been that way since service:
1. Maybe the bands were adjusted too tight thus causing excessive friction.
2. Is the pick-up filter properly installed?
3. Is there any line restriction including bent or twisted lines?
Seems like you might have noticed it earlier if its been overheating. Additional cooling and or fluid capasity is always a good route to go.
|

05-17-2006, 01:58 PM
|
 |
Hummer Guru
|
|
Join Date: Nov 2003
Location: Yes..I really moved outta Texas!!
Posts: 2,605
|
|
Re: Transmission Running Hot
If it's still under warranty, I would definetly take it in. Mine actually started overheating the same way, and then it went out about a month later.
Got a newly rebuilt factory trans, and never had that problem again.
Have you checked your trans fluid lately? I'm sure it's black by now if it's overheat so many times. Either way, I would change out your trans fluid.
__________________
If you can't be a good example...Then you might as well be a horrible warning!
www.meatspin.com
|

05-17-2006, 03:29 PM
|
 |
Hummer Deity
|
|
Join Date: Apr 2004
Location: Vegas
Posts: 8,750
|
|
Re: Transmission Running Hot
Quote:
Originally Posted by H2 Ranger
Has the overheating been since the vehicle was new? or has it started since service?
If its been that way since service:
1. Maybe the bands were adjusted too tight thus causing excessive friction.
2. Is the pick-up filter properly installed?
3. Is there any line restriction including bent or twisted lines?
Seems like you might have noticed it earlier if its been overheating. Additional cooling and or fluid capasity is always a good route to go.
|
RE: 1, anything is possible but the trans remains at it's normal operating temp most of the time. It only climbs when going up long or steep grades.
RE: 2, I haven't a clue. With the other stuff the the tech from Cerriots Hummer f u c k e d up I wouldn't be surprised to find that he's messed up the filter install as well.
RE:3 No there are no bent or twisted lines. The only two lines I see are both 1/2-3/4 inch coper for the incoming and return of the ATF from the radiator back to the trans.
It's only 90 this morning at 7:30 I'll go out and crawl around and see if anything jumps out at me as being wrong..
Thanks for the list of stuff to check.
|

05-17-2006, 03:30 PM
|
 |
Hummer Deity
|
|
Join Date: Apr 2004
Location: Vegas
Posts: 8,750
|
|
Re: Transmission Running Hot
Phil,
Thanks for all the advice.
I need to find a mechanic here in town I can trust and that is proving to be difficult.
|

05-17-2006, 03:35 PM
|
 |
Hummer Deity
|
|
Join Date: Apr 2004
Location: Vegas
Posts: 8,750
|
|
Re: Transmission Running Hot
Ric,
Thanks, I'll check with the dealership and see if they would be willing to check the condition of the trans under warranty.
It will not come as a surprise to me if they tell me that because of the supercharger I had them install that my trans is no longer covered.
The trans fluid was changed in mid April along with having trans maintenance done. this was done when the truck broke down due to a valve guide that got sucked into one of the heads while on my to Ca for a visit to my folks. The heads and exhaust had to come off anyway so I told them to service the trans.
|

05-17-2006, 03:44 PM
|
 |
Hummer Veteran
|
|
Join Date: Apr 2006
Posts: 201
|
|
Re: Transmission Running Hot
If this condition has started since service, Have them reacheck the adjustments something is not right. Mine has a SC too and I dont have such conditions but mabee someday.... But in Heat regard such has Phil indicated it can be many things Slippage of clutches, lubrication restriction, fluid condition, etc. Do you have a good performance Transmission shop in the area? And a good aftermarket cooler would definitly help. I really dont think you will run into a condition (UNLESS YOU LIVE IN THE ARTIC) where you will need to worry about low transmission tempature. The higher the temp the more friction. Let us know the outcome.
|

05-17-2006, 05:09 PM
|
 |
Hummer Deity
|
|
Join Date: Apr 2004
Location: Vegas
Posts: 8,750
|
|
Re: Transmission Running Hot
on the dipstick it says check level while parked and ideling. Ok done.
The level while not apparent in the pictures was between the two holes on the stick, the color seams ok. It's not supposed to be clear is it? It doesn't smell burnt.
|

05-19-2006, 11:08 AM
|
 |
Hummer Expert
|
|
Join Date: Mar 2004
Location: Houston, Texas
Posts: 917
|
|
Re: Transmission Running Hot
Fubar, I have 05 with the SC, and a 10,000lb trailer. Not many hills here but we do have 100+ days. Transmission has never run hot!! I use Royal purple Synthetic. My 03 Tranny ran hot just before 2nd and 4th gears failed!!! 
|
Thread Tools |
Search this Thread |
|
|
Display Modes |
Hybrid Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
All times are GMT +1. The time now is 04:12 AM.
|