Nissan Titan Forum banner

Overheating problem while NOT towing

1.4K views 6 replies 5 participants last post by  LUBECAKES  
#1 ·
Hello everyone,

I have a 2007 Nissan Titan LE with about 117k miles on it. It's the tow package and I'm pretty sure the previous owners used to tow with it. I however have not towed anything with the truck yet. I was driving up some steep hills / mountains today in southern California (outside temp was only 65 degrees), and my Automatic Transmission gauge hit that line right before "H" when I started driving uphill. The A/C was off, and I was going about 35mph or so at about 3k RPM.

The fluids seemed in check when I looked at them, so I'm not really sure what's going on. I'm not very savvy with getting into the gritty details of fixing trucks, so unless there' something I can do to fix it myself, would you think it'd be better for me to just take it to a Nissan Dealership? Every time I go to a dealership, I just feel like they are ripping me off, but I don't know what else I could do.

Thanks for your help!
 
#2 · (Edited)
Hello everyone,

I have a 2007 Nissan Titan LE with about 117k miles on it. It's the tow package and I'm pretty sure the previous owners used to tow with it.
Has the transmission fluid EVER been changed? If not, I would start there with a complete service, not just a spill and fill. Next, I would try and trouble shoot the system by determining if you have either a bad sensor/sending unit, or possible a bad gauge. A bad sending unit/sensor will give you the wrong indication on your gauge, as will a bad gauge itself.

Yes its normal as I believe the sensor is right after the torque converter and not in the pan. Freeway driving with the torque converter locked produces very little heat. When you start doing city driving, towing, on and off the throttle is when the torque converter is unlocked and "slipping" and is when you see the transmission getting up to temperature. If the needle is in the middle, your transmission temperatures are fine. You only need to worry if it gets up to the H.
 
  • Like
Reactions: LUBECAKES
#4 ·
Has the transmission fluid EVER been changed? If not, I would start there with a complete service, not just a spill and fill..

I am unaware if the transmission has ever been changed. I do know, however, that it hasn't been changed within the last 10k miles since I've owned the vehicle. Is this possible to do on my own, or would it be better to just have it done at the local dealer?
 
#3 ·
You gotta drop down a gear. Even when empty.

sent from the halfass app. is it even running or is it locked up again?
 
  • Like
Reactions: Pickle-Smooch
#5 ·
If I was you, I would take it to the dealer and tell them to do a complete fluid exchange on your transmission. The cost will probably be around $200. The alternative would be the "spill/fill" method.

Sent On The Fly
 
#6 ·
Were you by chance in 4Lo?

It's possible that if the hill was steep enough that the fluid in the transmission pan went to the back of the pan where the transmission couldn't pick it up from. This is unlikely since if the transmission didn't have access to fluid it would have started to slip.
 
#7 ·
I think you need to start by duplicating the problem and then aiming an infrared temp gun at the trans pan to see what the temps actually are.

If your fluid level is good and the fluid smells fine I'd let it go.
You may also have to use a good scan tool to read what the trans temp sensors are doing. I have one that displays the voltage and actual temp for both sensors.