hello, well i was driving home 60 miles and my trucks cel came on. I have a superchips so i checked the codes when i got home. i came up with a P0125 insuff coolant temp for closed loop and a P0460 which was fuel tank leverl indicator circut error. any ideas why these would go off or how to fix them?? anyone??

 

The p0125 is basicaly saying the engine is not running at operating temperature. Check coolent level possable thermastat stuck open or bad temp sending unit. Was temp guage in normal operating range?
The other code is fuel level related sending unit or guage problem. Posably an ins cluster problem. I would check the temp problem and clear the codes and then see what develops.

 

the temp was just slightly higher then normal but i was also doing 85 for about 40 min straight so i suspected it would be alittle higher? i did clear the codes last week and they both came back? any idea how to go about the fuel problem? and how would i kno if its the thermostat since im not going too much higher then normal? thanks

 

being that the temp guage is reading ok that would elimanate the sending unit and thermastat. I would check the coolent level in the rad when cold make shure itis full. that code is saying the engine is not up to operating temp to go into closed loop operation. another sensor it looks at is the cylender head temp sending unit. you will almost have to find some one who can check the pid values with a scan tool to see what the sensors are telling th ecomputer. are ther any other eletrical problems with the truck sound s as though these two codes are somehow toghether check all the fuses. what does the fuel guage show?

 

the fuel gauge has been fine becuz it was at about half and i filled up today and it went to full, as far as other problems i havent had any since i bought the truck over a year ago. this stuff jsut came out of the blue? ill try to check the fluid and add some more if needed but i dont think that is the case. ( i had that problem last year and the owner who i know well sed his truck would lose coolant in the winter? there was no leaks or anything but it would jsut be gone and if he added some it was fine... i did that last year and it was better and checked this year and it didnt look like any was gone but ill check again