Hey what's up acurazine I just bought a 1999 acura tl and my temperature gauge does not work at all everything else in my cluster works. .the car is clean title. . I'm just wondering what would be the problem with the temperature gauge. Its as low as can be it doesn't move from that spot, please help thanks

 

First step is to check No. 9 (7.5A) fuse in the under-dash fuse box.

 

Next step is to check the coolant temperature sending unit. Be careful while following electrical diagnostic procedures - if you are not familiar, you could end up causing more damage than what exists.

Here is the procedure from the manual for 99 TL:
- Make sure the ignition switch is OFF, then disconnect the YEL/GRN wire from the coolant temperature gauge sending unit, and ground it with a jumper wire.
- Turn the ignition switch ON (II). Check that the pointer of the coolant temperature gauge starts moving toward the "H" mark. Turn the ignition switch OFF before the pointer reaches "H" on the gauge dial. Failure to do so may damage the gauge.
- If the pointer of the gauge does not move at all, check for an open in the YEL/GRN wire. If the wires are OK, replace the coolant temperature gauge.
- If the coolant temperature gauge works, test the coolant temperature gauge sending unit.

 

make sure the coolant level is to the top of the radiator and the res bottle is filled to the cold line
also ck the hose attached inside the res bottle cap- its critical to the system and likes to fall off and drop into the coolant

note: normal temp is 1-2 lines below half on the guage- and it should never go above that--gets to temp in a few minutes drive, then stays there regardless of outside conditions and load on the engine--running ac- mountains- 100 degrees outside

 

i have a similar issue with my 99 TL, my guage just stays stuck at halfway the whole time, when the car is off the guage is still at halfway, so will never be able to tell if have heating issues. Anyone have any ideas how to fix??

 

Sounds like you may have a faulty gauge. You can try to replace just the temp gauge. Its pretty easy to do. You can get it from this link.

http://www.acuraautomotiveparts.org/...catdisplay.jsp

 

do the above test, then order part as needed