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2003 H6 Overheating


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29 replies to this topic

#26 dbullen

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Posted 19 August 2010 - 10:18 AM

It sounds to me the tech did a good job but there may be a problem with a headgasket. It sure sounds like it at least. I would have him look at it again and check for any exhaust gases in the coolant.


What does the blinking AT Oil Temp mean?

#27 Cougar

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Posted 19 August 2010 - 10:21 AM

I think that means there is a trouble code for the transmission. You should first talk with the tech about what is going on if you have to drive it a long ways to get it to him so you won't possibly damage the transmission.

Edited by Cougar, 19 August 2010 - 10:23 AM.


#28 dbullen

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Posted 19 August 2010 - 11:58 AM

I think that means there is a trouble code for the transmission. You should first talk with the tech about what is going on if you have to drive it a long ways to get it to him so you won't possibly damage the transmission.


I'm putting it on a flatbed truck just to be on the safe side. (Already had the transmission rebuilt once) don't need to do it again :)

#29 dbullen

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Posted 19 August 2010 - 12:41 PM

I'm putting it on a flatbed truck just to be on the safe side. (Already had the transmission rebuilt once) don't need to do it again :)


I thought about doing a chemical test on the coolant but I also remember my subaru guy saying that doing a chemical test on the coolant in a 2.5 is useless because it will always show up positive whether there is a head gasket issue or not. He said there was a subaru bulletin sent out about that.

Although I'm not sure what the story is on the H6 and this test, whether it will always show up positive like the 2.5?

#30 hankosolder2

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Posted 19 August 2010 - 08:50 PM

The transmission has trans fluid cooler lines which run to the radiator in this vehicle, yes? Perhaps when the tech was replacing the radiator he created a trans fluid leak or forgot to top off the trans fluid.

I don't know about the engine overheating issue though, unless the new radiator has a coolant >atf leak, perish the thought.

I find it pretty amusing that all 2.5s supposedly fail the chemical HG leak test. I wonder what the reason for that is? Perhaps all the HGs leak ever so slightly? :)




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