Been throwing CELs for high and intermittent temp sensor readings, which luckily did not affect my gauges, and finally found these threads. New, Green sensor for my '03 Jetta + clip and o-ring (just in case) was $10 shipped from Impex. Took me about 9 minutes to do:
- Removed engine cover and accordian, intake hosing
- Keeping old sensor attached to plug I pulled the clip and slowly pulled the sensor out with right hand, with an angle of attack from below and on the driver's side.
- Immediately stuck my left index finger "in the dike" to stem the loss of coolant from up and over the valve cover and CCV puck.
- Looked at the sensor I had just removed to confirm that the o-ring did not come out... of course!
This old one was a Black 4-pin OEM, being replaced with a Green 4-pin one... PLEASE READ ASSOCIATED THREADS linked in this thread ABOUT THIS!!
- Took new sensor, w/ o-ring locked-and-loaded already
in right hand and did the quick switch-a-roo, pulling the old o-ring out when I removed my left finger.
- Replaced the clip
- Now, I took the old sensor off of the plug, packed the plug with dielectric conducting goo, and clipped it back on the new, Green sensor.
- Lost about 1/2 cup of coolant via this "wet" method.
- Topped off with G12/distilled water mix
- Reset the fault codes with Vag-Com
- Wa-la!!
It does seem to help to NOT undo the coolant resevoir cap!
PLEASE only perform this on a COLD car, just to reiterate!
THANKS FOR THE HELP GANG!!!
Peace
Another assoc. thread with links:
http://forums.tdiclub.com/showflat.php?C...true#Post772571