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  #1  
Old 05-21-2006, 09:49 PM
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Join Date: Sep 2005
Location: Atlanta, GA
Vehicle: 1998 Lincoln Navigator
Posts: 2,616
I think I figured it out

So, this weeked we went to six flags. Well, its about 35 miles from my house, and we took the Nav. Got there fine, on the way back I noticed it started shifting funny, then it started acting like we weren't going to make it home. Checked the rearview, could tell the back window was covered in tranny fluid. Ah ****. Limp it home through hellish traffic (yes, hellish on a saturday) takes over 2 hours to get that 35 miles. Park in the street, truck pukes out about a quart or so. Decide screw it, take it to work tomorrow and fix it. Get in it this morning, proceed to leave, realize I ain't gonna make it far. Go 1/4 mile to grocery store, add 2 quarts cheap fluid (all they had was cheap crap) Start out towards work again, its working, but far from good. Get to work, add 4 more quarts and its barely reading Sit down on stool, looking at front and it strikes me like a bolt of lighting.



Notice that the heat exchanger for the intercooler fills that gap and looks real nice. Problem I have decided is that the heat exchanger is blocking the airflow to the tranny cooler, causing the fluid not to cool as it would without the HE. This must be making the fluid scorching azz hot and causing it to blow out the top of the tranny, cause it doens't leak a drop driving around town, only at interstate speeds (or in my case, 100mph+ on I285) I'll add a cooler and see what that does, but what do you guys think?

Is that possibly it?

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  #2  
Old 05-21-2006, 11:09 PM
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Join Date: May 2006
Location: Metro Atlanta
Vehicle: 2006 Ford F150
Posts: 159
Quote:
Originally Posted by 98Navi
only at interstate speeds (or in my case, 100mph+ on I285)
Goin' 100 mph on 285 - in ATLANTA ???

Yer gonna kill yerself, or sumbody else drivin' that slow and holdin' the flow of traffic up...

Just be sure you keep to the slow lanes at that speed.
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  #3  
Old 05-21-2006, 11:27 PM
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Join Date: Sep 2005
Location: Atlanta, GA
Vehicle: 1998 Lincoln Navigator
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Well, if I had to guess (my speedo only ready 100mph) I'd say we were around 115. It passed 100, went another 1/2 inch or so, and started twitchin like an addicit. Boy, did that trailblazer get a suprise! I don't think he knew a Nav would go that fast. However, the little mitsu went on by doing somewhere inthe neighborhood of 120ish. Bastard
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Old 05-22-2006, 07:20 PM
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Location: Dover AFB DE / Harrisburg PA
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I really do think you need a temp gauge... But you prolly know that.

That trans is on borrowed time after puking fluid IMO.

Adrianspeeder
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  #5  
Old 05-22-2006, 08:49 PM
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Join Date: Sep 2005
Location: Atlanta, GA
Vehicle: 1998 Lincoln Navigator
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I talked to mike over at TP today, and we agreed that the lack of airflow from the HE, plus the increased temp of the air that is flowing through the HE to the tranny cooler could well cause the fluid to get upwards of 300 degrees when coupled with the sitting in traffic and high speeds inbetween. I'm gonna get a guage and the fan oriented cooler and see what happens
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  #6  
Old 05-22-2006, 09:30 PM
adt adt is offline
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Join Date: Sep 2002
Location: Glendale, Az.
Vehicle: 2001 Ford f-150 XLT
Posts: 541
Man, I'm going through the same thing right now. The intercooler does block some air flow to the trans. cooler. And if you're in a traffic jam, well then there's no air period. My tranny temps are very high right now, so I got a 6'' fan and a controller from Mike Dunn, that should take care of that problem.
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