1995 z32 TT
1992 z32 TT
Accent Stripe
AIV Delete
Badgeless Rear Panel
Battery Optima Red Top
Big Brakes
Boost Gauge
Boost Sensor Hose
Boost Jets
Brake Idiot Light
Brake Master Cylinder
Butterfly Throttle Body
Carbon Canister Delete
Carpet Hole Repair
Center Console Removal
Classified ad
Clutch MC and Bleed
Cone Air Filter Placement
Connectors Under Hood
Delete & Bypass
Dyno Runs
Earthing Kit
Engine Pull
EGR Delete
Front Fascia
Fuel Line Clamps
Funky Fuses
Gear Shift Knob
Hatch Lock Stuck
Hella Horns
Hood Squeak
Idle Air Adjustment
Injector Dremel
Injector Testing
Interior Hatch Trim Repair
Jacking Car
Manual Boost Controller
Molding Replacement
Nose Panel
Parking Brake
Plenum Pull
PRVR Removal and Bypass
Pressure Wash
Radiator Hard Pipe Leak
Radiator Howe
Rear Interior Trim
Robo's Rules of Z-Dom
Seat Removal
Shock Install
Spare Tire
Speedometer 180 mph
Stereo Installation
Taillights JDM
Temperature Gauge
Throttle Sticking
Vacuum Lines
When TT.net Goes Down
1987 z31 T
2004 Tacoma
2011 Tacoma
1974 Mercedes 450 SL
12 Hours of Sebring
24 Hours of Le Mans
AACA 2004 Hershey
Garage Remodel
Misc Album Pics
Misc Linked Pics
Numidia Raceway
Watkins Glen
Interesting Links
For Sale
Contact & Feedback

Have you ever noticed your temperature gauge dropping suddenly under acceleration or bouncing around wildly?   The sensor for the temperature gauge is on the top front of the engine screwed into an alumimum water pipe, just behind the fan shroud, shown in the pic below under my index finger.  Under my thumb is the engine temp sensor for the ECU.  

Remove the black engine harness connector to the temperature gauge sensor and wiggle the spade connector with a finger tip as shown. 

Mine was loose, and would wiggle back and forth a millimeter or two.  The sensor was screwed tight into the water pipe, but the top rivet that held the male spade end onto the sensor was worn. 

This caused poor contact between the sensor and the connector.  This loose connection is made worse by engine vibration and fan wind under acceleration.  

Flatten out the rivet with a few gentle taps from a punch or awl so that the spade is snug. 

After that, my temperature gauge read rock solid once again.  I've had to repeat this procedure once in two years.  

If that doesn't work the unscrew and clean the sensor with a solvent like brake cleaner.  Also, clean and put dielectric grease on the connector.  New temperature sensors are fairly cheap, if all else fails.