What kind of ATF temp sensor are you guys getting and where from? Where on your dash are you installing it?

I just got my Tru Cool #4454 and bypass a couple days ago but didn't get the temp sensor, i'd like to get it all installed at the same time.

 

I like this Isspro electric gauge http://www.egauges.com/vdo_mult3.asp...=EVA_R&Units=E

Mine is in the glove box with 2 other gauges :



I put some other gauges I monitor more closely on the steering column (Perrin makes that gauge pod http://www.perrinperformance.com/pro...ory=9&model=22 ):

 

mtgoat,
i've done so much reading that i forget who has done what mod. Did you use a "t" in the atf oil line for your temp sensor? What do you think about the sensors that install into the trans oil pan like part # 13009 on bulkpart?

 

Yes, mine is in the cooler line before the cooler. I don't like the ATF pan because that is the coolest the ATF will be. I want to know the hottest ATF not the coolest, but that would be better than nothing for sure.

 

thanks for your input it helps a lot, can't wait to get this installed soon!

 

has anyone of you tried the hayden 1678 cooler and how it was installed? thanks.

more power to all those who contributed to thsi thread!

 

As stated above i just got my trucool 4454 via UPS a few days ago and i'm awaiting install when time is available.

My situation is that I'm soon to be moving to Eastern Washington where the temps will get consistantly below 25 degrees (and times below ZERO) during the winter. When i ordered my 4454 i also got the external bypass valve to run with it. I see other people think this is redundant since the 4454 already has a built in bypass and the external bypass may be a little restrictive.

What's the deal??? Use the external or not? Anyone running the 4454 in cold weather without the external bypass? I'd rather not waste nearly $30 on something i don't need.

Thanks in advance, i just want to do it right the first time.

 

Lekiboy needs it worse that you do, he doesn't have any bypass with a Hayden cooler. Sell it to him LOL.

 

hi mtgoat,

pls elaborate...does this mean that i really need to use the radiator cooler still rather than use the hayden all by itself (bypass the radiator)?

if yes, can't i just use the hayden and bypass the rad?
thanks.

 

Where are you located? If you do a lot of driving in very cold weather you could be over cooling the ATF with a Hayden cooler because it doesn't have a internal cold weather bypass.

 

Hey guys,
Thanks to all of you DIY folks I have braved up and installed Tru-Cool 4544 unit 20,000btu. I'm running 145F on a highway and highest temp topped at 169F. I have also installed Magnefine 3/8" Inline Magnetic Transmission Filter on a return line. Here are my pictures.
Thank you all.

 

Maybe in the future you might think about moving that trans filter out from behind the grill? It's going to suck having to pull the grill every time you need to change the filter. Just my opinion.

 

Hi Mt goat,
Am in Manila ao the weather would be on the high side temp...so does this mean that I will be OK?
Thanks man.

 

Yeah you'll be fine there.

 

My educated opinion based ONLY on cold weather application....

I was going to do the "bypass" but i have read enough to find out that there is an IDEAL operating temperature for ATF to run at. Just like the bears and their pourage, there is too hot, too cold and just right.

When you overcool your ATF via bypassing the factory heat exchanger oil/water way by using an external oil/air cooler you start to mess with the oil flow characteristics. If the oil stays too cold it may not get to all the nooks and crannies it should and may not lubricate to it's highest potential. If it gets too hot then the oil burns and breaks down thus creating oxidation....etc. In ambient temperatures well below 32f the converter can not sustain ideal heating of the ATF because external oil cooler is cooling it too much.

Some people on here are reporting that they are running cold ATF temps between 80-100 degrees F and their tranny's are still shifting just fine and they're not to worried. Well on the other hand, for our auto trans, if we we're running hot (say around 250 degrees F) would you really notice? Probably not although damage is being done and you don't even know it till it's too late. It's no secret that engines have an IDEAL operating temperature so your only rolling the dice if you think your transmission doesn't!

My $.02, First, if your worried then get a new radiator since it's the old radiators that are several years old that are breaking down. Secondly, run an oil cooler in line after the radiator to protect yourself from overheating in case your radiator or water pump does fail. Thirdly, do a strip test with your ATF to detect if there is any coolant in your transmission. If you find some then you know your radiator is starting to fail and a MILKSHAKE is possibly on its way.

Good luck!

 

My tranny has a tendency to shift harshly until it has warmed up, which only takes a few minutes of driving even in freezing temperatures. I agree that ATF has an optimal operating temperature, but has anybody gotten sustained temps below 150 or so? I don't think there's any way somebody could put a cooler in their truck that would provide excessive cooling to the extent it would cause damage.

 

People tend to get excessive cooling (below 100 degrees F)in cold weather once the transmission hits OD for extended periods of time. So if your driving on the freeway in freezing weather for a long period of time in OD you are running very low temperatures. This is when (in my opinion) the factory heat exchanger becoms vital in regulating ATF minimum temperature.

I like to go snowboarding a lot and it can be an hour drive minimum and that's way too long to be overcooling my tranny and once i go down the mountain after boarding all the "coasting" down hill at low speeds will most likely overcool as well. Not worth it in cold weather in my opinion, only in consistent warm weather like San Diego.

 

Installing 4454 tomorrow and just wanted to make sure I do this right the first time. Passenger side line goes into the inlet on the cooler and the bottom line on the cooler goes to the other line. Thanks in advance

 

i know this is an older thread but ill throw in my 2cents, I got a hayden aftermarket trans cooler and it sits perfectly between the condenser and radiator.

 

I have a cold weather bypass in parallel with mine as I had the same worries. Also, if you still find that you run too cold, you can cover/insulate portions of the external cooler. It doesn't have to be all or nothing.