Got had my trans replaced under warranty back in dec/jan an about a month later the trans temp seems to jump around after it warms up and passes the norm temp of 185+ some like in the 1000's and down to -38 so idk.. now its been happening sooner and it does in drive an definitely qwiker in manual mode. Also after this on occsaion it shift alot harder then normal but goes back to normal within a couple min. I havnt takin it in to the dealer yet cause i dont wanna hassle my parents about using a car at the moment since one of there is in for work. I do have a warranty on it the 3yr 100k

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04 Comp G... ON METH 3.5-3.6, Headers, intake, Overkill/street tune, gxp brakes, and every suspension do-dad lol
OLD PB 1/4mile in 14.07 at 98mph!! 2.0 60ft

Must be the transmission temp sensor. Your 185 temp sounds about right, mine will sometimes cruise up to 198 or so if im bootin on it.

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P0713 is a TCM code. It indicates that the ATF sensor is reading too high a temperature. This will occur if the sensor wiring is shorted to ground or the sensor itself is grounded.

I would def say something is wrong with the sensor or wiring.

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GPDIY - For All Your DIY Needs
VS CAM|3.4|HEADERS|FWI|42.5#|HPT|6000k LOWS|8000k FOGS|

Your temps sound fine, just the sensor.

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one time i saw 230 ....when it gets to 200 or 190 i let it rest for a while

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TOP SWAPPED-LS6springsXPcam3.4MPS-SD'sCustomDHPtuneMsdCustom painted/polished genV SSCsGXPforged alcoasSPOgrilles/spoiler/SElip/GMPPhandling
14.02@100 2.294-60'
L32Swap 13.7@102 O.o

i have never had a trans get over 190

not even in the white car and it had a bad tourqe converter that never locked up

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92 LeBaron Convert: Turbo 3L 97 Grand Prix GT 4dr "Frankenstein": L67 4t65 swap
97 Grand Marquis: Summer DD 99 Grand Prix GTP: Top Swap Beater

hey yesterday my car did that thing like this -- and my rpm, temp, and gas gauge wouldnt move if i let it cool down for a bit they would work again

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TOP SWAPPED-LS6springsXPcam3.4MPS-SD'sCustomDHPtuneMsdCustom painted/polished genV SSCsGXPforged alcoasSPOgrilles/spoiler/SElip/GMPPhandling
14.02@100 2.294-60'
L32Swap 13.7@102 O.o

well i just dropped it off this morning and they say the temp sensor is bad, they are over nighting a new sensor an doing a trans service as well. Im gonna ask if a external trans cooler will void my warranty to help cool it too.

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04 Comp G... ON METH 3.5-3.6, Headers, intake, Overkill/street tune, gxp brakes, and every suspension do-dad lol
OLD PB 1/4mile in 14.07 at 98mph!! 2.0 60ft

I have heard that there is no need for an aftermarket trans cooler. These transmissions never get hot enough to do damage, only damage comes from hard part failure.

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Sometimes in the summer months my trans temp will reach into the 200-230 range.
Are you saying that temps this high will not damage anything?
What is the boiling point of the fluid?

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2005 Grand Prix GTP Comp G

Put the aluminum tranny pan from zzp on! haha

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Dthreap wrote:

Yeah make sure your O2 isn't behind lazy, you want nice up and down.

Planeboy18 wrote:

^^Pro tip for more than just O2 sensor signals

I put a nice transmission cooler on my build; it helps, but it really doesn't need it. I personally bought mine as another route of "insurance" and "hope" to make sure I'd never have the transmission issues I had before I got a rebuild.

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2004 Grand Prix GT2: cone air intake, rebuilt HD transmission, rebuilt camshaft, rebuilt top, repainted black rims, rebuilt suspension, slotted/cross drilled rotors, Pioneer AVIC-D3 TV stereo, and more!

as tom said (allthough not the "right" problem) the converter dont lock up in the car and depending on driving it will get as high as 210* (pushing it on the highway) i slow down a bit and it cools off, it is the selinoid as it will try to lock every so often but not consistantly, and this is not the same converter that was in the car, this is one i bought new and used in my other car and it worked fine, but does the same thing that tom's was doing to the letter. i am gonna add a small cooler, just because knowing that heat is a number one killer of a trans (right after more power than it was designed for) i will keep it cooler. i had heard of a trans getting too hot but have yet to hear of one failing from being toooo cool.

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2001 white gt coupe with enough crap to make it run mid 13's with 3 bad pistons
2002 40th GTP sedan mostly stock

no only issue with too cool is the fluid gets to think and can blow out seals but that is like below 30* for extended periods of time going full line presser. this is why the factory cooler goes through the rad. it acts as a fluid heater in the winter so you do not damage the trans with to thick of fluid

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92 LeBaron Convert: Turbo 3L 97 Grand Prix GT 4dr "Frankenstein": L67 4t65 swap
97 Grand Marquis: Summer DD 99 Grand Prix GTP: Top Swap Beater