CEL; P1281; Thermostat; Help?
I'm breaking the unwritten rules because I have this same post under cheap fixes and I'm "that" guy, but I need help...
I'm throwing a code in my 02 TJ and I need to get it inspected. Because I'm in Houston I cant bypass the CEL issue. I haven't tried a fix yet because I just now narrowed down the issue to a temp thing. The temp warms up on my gauge as it should and stays where it should once its warm so no sensor issue that I can figure;
Code (P1281) says engine stays cold too long, which is total crap. Diagnostics say likely causes Low on Coolant (which I can guarantee isn't the case) and faulty thermostat. Thermostat was replaced less than a year ago. Doubt it went bad. I called my mechanic who suggested (this seemed weird to me) that I turn the thermostat 180 degrees and it should fix the problem.
Given his previous credibility with me on my annoying fixes, I don't want to say it sounds bogus, but has anyone else ever heard of this? Am I just the idiot who doesn't see how this would affect anything? Please, if anyone can shed some light on this I would really appreciate it, my inspection is about 3 months past due and its about to be my daily driver again.
The last thing I want to do is put her in the bullpen for a day and let my mechanic put his finger in my ***. Could it be a sensor sending bad information to my computer? I'm no genius, but if the thermostat was stuck open, wouldn't the gauge not be rising at all or stay at optimal temp? Please tell me if rotating the thermostat would do something because it kind of sounds like some quack **** and I'd rather not waste my time. I know I'm gonna get some laughs but seriously, I'm trying to get a solution here, so keep the "you idiot" remarks to a minimum please.