Nice job on reviving a 2008 thread
Anyway, many engine performance parameters get their data from the temperature and position of the the thermostat. Your quote for the job is ridiculous, though- It's a 30 minute job with a $55 part:
Remove the forward lower pan, drain the radiator, remove the air intake, disconnect the sensor wire and hose clip, remove the three screws and replace. Refill with a 50/50 mix of distilled water and BMW (or Zerex G-05) coolant, run with the cap off and heater on for a few minutes to bleed, and you're done.
2007 E92 335i . Space Grey . Premium . Sport
2006 E85 M Roadster . Alpine White . 6MT
2006 E60 550i . Sapphire Black . A5 . Sport . Premium
2003 E39 530i . Titanium Grey . 5MT . Sport . Premium
1989 E34 535i . Black . A4 . Premium . RIP
1981 E28 530 . Grey . A4 . German Specs . RIP '94 in USAREUR
1977 E21 320 . Light Blue . 4MT . German Specs . RIP '92 in USAREUR
Last edited by borderchris; 07-25-2012 at 05:19 PM.