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2003 BMW 330 Service Engine Soon

Tiny
MSPENCER512
  • MEMBER
  • 2003 BMW 330
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 81,000 MILES
OBD II code is P0128
P0128 Range/Performance Problem In Thermostat
P0128 ECT Below Thermostat Regulating Temperature

What is the next step?
Should I replace the thermostat?
Is there an ECT sensor?
NAPA is calling for a Thermostat at 104.00 or a thermostat and water assembly for 49.00

Is this something that a home garage mechanic can replace? I have replaced many thermostats before.

Thank You in Advance.
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Friday, September 4th, 2009 AT 8:01 AM

3 Replies

Tiny
DOCHAGERTY
  • MECHANIC
  • 9,601 POSTS
Look for the part at Realoem. Com, I would replace the T-stat. The answer is yes you can do it, it is not difficult, the fan will need to come out and it is a left hand thread on the water pump, you can do it, if you get stuck, I will be back around 5 pm pacific time today.
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Saturday, September 5th, 2009 AT 11:44 AM
Tiny
MSPENCER512
  • MEMBER
  • 2 POSTS
Don't think I'll be able to get to it that soon. Is this something that could be hazordous to the car or engine. Temp gage show all good.
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Saturday, September 5th, 2009 AT 11:55 AM
Tiny
DOCHAGERTY
  • MECHANIC
  • 9,601 POSTS
I would rate this as non-critical and if you wait there should be no collateral damage, if it were mine, I'd do it when it was convenient.
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Saturday, September 5th, 2009 AT 2:25 PM

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