Trans cooler lines

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Oct 19, 2007 | 12:07 AM

UWEBABY

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From: TEMECULA CALIFORNIA

St. Jude Donor '06-'07-'08-'09

Trans cooler lines

ive got a 2004 auto and had a trans cooler installed by a trusted mechanic. temps didnt drop, and stay in the vicinity of the radiator temps. im thinking my mechanic reversed the lines and has fluid going from my trans cooler to the radiator and back to the trans. before i crawl under to check, can anyone tell me which radiator line is in and which is out?

thanks

Oct 19, 2007 | 01:24 AM

hightest

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From: Calgary Alberta

On the stock radiator trans cooler lines, inlet is on the bottom and outlet is on the top. If your new trans cooler still runs through the stock radiator inlet/ outlet tubes, your trans temp will not significantly drop; if the trans cooler is used as a stand alone unit your temps will drop more significantly. Also, the size of the cooler that is used will play a significant role in the overall temperature drop. I currently run a B&M 8.5 by 11 inch; into the stock inlet, out the stock outlet, through the B&M, and then back to the transmission. At 100 deg. outside temps in traffic, I'll reach as high as 205 deg. for tranny temps. Average temps are 190 deg. I won't run stand alone on the B&M as typical average outside temperatures here are fairly cool, and the transmission runs too cool (in my opinion). average op. temps. were only 115 - 120 and I don't think that is very healthy for transmission longevity.

Oct 19, 2007 | 10:04 AM

UWEBABY

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From: TEMECULA CALIFORNIA

St. Jude Donor '06-'07-'08-'09

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Originally Posted by hightest

THANKS TED, THAT IS A BIG HELP. IVE GOT THE BIG HAYDEN RAPID COOL. YESTERDAYS AMBIENT WAS ABOUT 85. IN 10-20 MPH TRAFFIC, RADIATOR WAS AT 200-210, AIR ON. TRANS OIL WAS AT 205. IN THE SUMMER, WITHOUT THE TRANS COOLER, IT WAS 105 AND TRANS GOT TO 220 (WHICH IS WHY I WANTED THE COOLER). WHAT I NOTICED THOUGH WAS THAT ONCE I GOT ROLLING, IT TOOK FOREVER FOR TRANS TEMP TO GO DOWN, AND IT ONLY GOT DOWN TO 190.
LAST YEAR WHEN I STILL HAD MY C4, I PUT THE SAME COOLER ON AFTER THE RADIATOR, AND TEMP NEVER GOT OVER 195. IT WOULD IMMEDIATELY GO DOWN ONCE I GOT MOVING AGAIN. THAT IS WHY I AM SUSPECTING THEY HAVE THE LINES CONFUSED.
ILL SEE NEXT WEEK WHEN I BRING IT INTO THE SHOP AGAIN.

THANKS AGAIN

Oct 19, 2007 | 07:19 PM

hightest

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From: Calgary Alberta

Oct 19, 2007 | 07:42 PM

DJMRTS

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From: Bonita CA

Just run your new cooler stand-alone and bypass the cooler in the radiator all together. On a hot day running hard through the mountains, my tranny temps never exceede 165 degrees.

Oct 20, 2007 | 02:57 AM

Dirty Howie

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From: SoCal

I run my RPM tranny with a stand alone cooler. I called Rodney as I was concerned my temps were only 130-150 ....... HE wasn't concerned at all !!!!!!!!!!

Oct 20, 2007 | 10:39 AM

UWEBABY

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From: TEMECULA CALIFORNIA

St. Jude Donor '06-'07-'08-'09

Quote:

Originally Posted by DJMRTS

Just run your new cooler stand-alone and bypass the cooler in the radiator all together. On a hot day running hard through the mountains, my tranny temps never exceede 165 degrees.

i know that a lot of people recommend this. my only concern is that, since i often drive in heavy traffic during the summer (15 and 91 freeways), there may be times when there is very little air movement into the front pickup and over the transcooler. at least running it through the radiator will keep it cool until air moves again.
did you install a fan over your trans coils, and where did you install the coil, to the condensor?