2006 LR3 4.4L Coolant Steam and Overheating
This post has helped me tremendously over the years, thanks for all the input and experience.
I have a 2006 LR3 4.4 L with 225,000 miles on the engine and running strong thus far. Couple days ago, I started the vehicle, noticed the engine revved up to about 1000RPM, and stayed there. On driving, the truck seems sluggish didnt want to change gears, so I switch to sport to manual changed gears. About 20 mins into the drive, smoke coming from the engine and the temp gage shot up in the red. I pulled over, shut down the engine and had the vehicle towed home. Next morning, I was able to start the vehicle, popped the hood and looking for coolant leak. After about 20 mins, the temp gage was in the mid range, I noticed puff of steam from the T-Stat housing where it connects to the engine on the right side of the block. It wont steam consistently, only intermittently. I am thinking the housing is cracked and as the thermostat opens and closes to regulate the temperature, resulting in the intermittent steaming of coolant. I know I have to replace the T-Stat housing assembly and flush the system. What else could have caused this and I would appreciate any advice from you. Thanks in advance for your help.