Just had my trans rebuilt,shift kit and a yank 3200 installed. Driving to work this morning my temp warning light came on reading 266. Is this normal for what I had done to it

 

Not at all.. Park that thing. Call the place that did the work. Temps that high will destroy the transmission quickly. Transmission temps are best kept around 200F or less. At your 266F temp, the fluid will break down. Don't put this off. You'll be buying another transmission soon if you do. Did they get the transmission completely filled up? Did the place that did the work have a lot of experience in Vette transmissions? Lots of unanswered questions but 266F is bad and your car is letting you know its bad. Keep us updated.

 

Mine is stock with a tune and the highest reading I have seen is 217*. Something is definitely wrong with your new one...

 

You should generally get an aux tranny cooler when going to a higher stall converter, especially one as high as 3200. That said there may also be an issue here but hard telling without knowing more about the ambient temps and the type of driving being done.

 

Something is very wrong.

1. If you had an aftermarket Torque Converter installed, was the PCM reprogrammed for new shift points????? If NOT, that is a significant issue. That MUST be done for the trans to work and shift properly.

2. IS IT PROPERLY FILLED???? The Shop manual is VERY VERY Specific on how to fill the trans PROPERLY. If, it wasn't done properly, you will destroy it in short order!!

3. You need an aftermarket auxiliary Trans Oil cooler when you run a higher stall speed converter.

Here's how you can tell if the trans ATF is LOW. If the mechanic removes the FILL plug with the engine NOT RUNNING and ATF doesn't GUSH out of the fill hole, it was NOT full!

OR

If they remove the fill plug with the engine running and at proper temperature and can they can ADD additional ATF, IT WAS NOT FULL!!

CALL them ASAP and tell them that it is overheating and ask them if they want it to be TOWED IN.

Tell them that you at least want the fluid changed after they figure out why its overheating.

My 2 cents.

Bill

 

In my opinion this is one of the best transmission coolers out there.
I live in Fla and my tranny temps in 90 degree air under normal driving have never seen over 170 degrees and in cooler months never over 150 degrees. This cooler fits the front condenser perfectly and does a good job cooling.






http://www.makcotransmissionparts.com/4739-1.html

 

Mine would go that high after 3400 stall and new rpm lvl vi, my car is also sc, cammed etc. I put a b&m cooler with fan under driver headlight and it never goes over 185* in fl in summer temps! But check everything else first, seems some think there is a problem in your case.

 

I'll look into that one. You have any pictures of it mounted

 

If you want I can take pictures from the bottom but can be hard to see. Because it is mounted in front of the condenser under the car. Let me know.

 

Sure. When you have time.

 

Alright going out now. Be back in 30 min.

 

STOP--this is on the edge of a catastrophic failure !!!
You must install an aftermarket trans cooler with most all stall converters--
Plus with a stall I always recommend a retune of your trans with HP or EFILIVE---Stalls create false codes mostly misfires so that needs to be addressed in your tune-- (misfires whether real or false will prevent the converter from locking)-Also with a stall some tables should be changed from stock to make the trans shift properly and more crisp---
1. all the shift times should be returned to STOCK
2. the Force Motor Current tables need to be reduced to accommodate the mis -information the stall creates---Normally about a -15% will do
3. The TCC lock up "PWM" table absolutely requires an adjustment---As this dictates how much line pressure is used to LOCK the converter---Most stalls are of a smaller diameter so the cluthes are smaller---I always set the PWM tables to 95% minimum and 98% maximum
4. Finally It has been my experience to never install a mechanical shift kit on any computer controlled trans---This always creates issues and overheating---Because the trans computer is fighting for control of the trans VS the mechanical shift kit---So you end up with a trans that no one has any idea what's going on
You can make any computer controlled trans shift firmly enough to bark the tires in 2nd--even without a shift kit--So adding a shift kit only confuses the computer and can lead to overheating and failures---

 

I went out yesterday and really did not want to get under the car, plus it is a real tight space under there to take a photo.

Its really simple, just bolt up the cooler to the condenser. Drill holes thru it to mount it. The cooler I suggested fits perfectly in the space above the air dam. Then run the lines from the tranny to your cooler. I had a shop do mine.

Sorry I did not get back sooner.