Originally Posted by jastutte

after doing a little more research and reading i decided to dig into the engine bay the other day. pulled the plug off the TPS and gave both ends a cleaning. i noticed the silicone(?) dust moisture seal was torn and bunched up and simultaneously realized the plug had come off far too easily. i pulled the torn seal out and seated the plug fully and securely on the TPS. two tanks of fuel, these ****ers have tiny fuel tanks, and over 300 miles later and i have had no issues with the Restricted Performance mode. later i'll track down a new/used silicone seal and install it on the plug. my current working hypothesis is that the bunched/torn seal was not allowing the plug to seat properly and giving the occasionally low voltage or improper voltage readings which cause the Restricted Performance mode every 150 miles or so.

the only other thing i did was to turn the LR4 on to the ON position and then depress the skinny pedal 10-15 times. some reading had suggested that this may free up and clear debris in the potentiometer attached to the pedal that syncs up with the TPS.

regardless, i'll update this post as needed.

Originally Posted by Leggomysakyo

Has this "fix" resolved your issue?