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12-20-2009
I have a 2005 Pontiac Grand Prix GTP Comp G!!! The car never really heats up to half way on the heat gauge. It sits between a quarter and half quarter while driving. When I am in traffic and stopping a lot, it will go up to half way. I have replaced the thermostat with a GM one. Any ideas????
12-20-2009
on my 01 the guage only goes up 1/4 of the way, which is 195 degrees. if it reached halfway i would be doing some worrying. maybe your guage is similar in that regard. does your guage have numbers? if so, around what temp does it level off at?
12-20-2009
sounds like you may have put in a 160 degree t-stat, is your heat not warm enough for you? cause having your car run cooler is MUCH better anyway
12-20-2009
^ there is no way he has a 160 unless his gauge is mess up. That sounds about normal for gauge fluctuation.
12-20-2009
Well there arent any numbers on my gauge. It's just in four quarters, and the last quarter is red. I do get heat, but not as much as I would think should come out. It get's hotter once it heats up to a quarter way. I bought the stat from GM and they said it was the one recommended for that car. I just don't want to cause any damage to my car if it's running too cold here in Canada, lol. Most cars I get in sit half way on the gauge while driving, that's why I am wondering why mine doesnt.
12-20-2009
check your coolant temp sensor. its possible your temp is fine but the sensor is causing the gauge to flip out. theyre like 12 bucks at a part store. just go get one and replace it. even if its not it then you have a new one anyway.
12-21-2009
Ill try it out, should I buy a GM sensor???
12-21-2009
Did yopu just get this car?
Sounds normal to me...
I too thought my 99 sensor was bad and gague did not read high enough, I just got this car. I replaced it and did read the same. Finally I remembered I could check the ECT on my scan tool and the gauge and tool were correct. Wasted $15...
I know our cars are not the same, but it sounds normal to me.
My gauge starts at 160, normal operating temps are 180-190, and there is a lot of gauge left when it is reading normal. My gauge also goes to 260 max. I think GM chagned that for you model and it does not start at 160 or at least it is not labeled 160.
Last edited by toolguy; 12-21-2009 at 07:34 AM.
12-22-2009
its not labled but the very bottom, the first line, is about 140, the next notch is about 185. halfway your lookin at about 210 and thats the most i have seen when i was in a traffic jam in atlanta on a 100 degree day lol so i cant help with anything past that.
12-23-2009
WOW, Okay, so my car is running at it's proper temp than!! Awesome!!
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