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Thermostat light has come on - 2012 Smart fortwo

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After changing thermostat, car is running to cold


Did you install the thermostat in the same direction as it came from Factory? Did you used a new rubber gasket on the thermostat?

Can you Test the thermostat in a pan of hot w?ter, to visually verify that it opens as intended (at 195°F)?


Amclaussen.

Mar 30, 2013 | 2006 Dodge Stratus

1 Answer

How do you change the sensor for the check engine light that produces the Code 0128?


You'll find that this is actually your thermostat, not the actual sensor itself. Your thermostat is sticking open causing it to run too cool. Replace the thermostat, and that light will go out. I went a year with this problem, replaced the sensor twice, light would still go on. The bad thermostat was causing bad readings by the sensor. Very common problem for Envoys and Trailblazers.

Oct 26, 2010 | 2003 GMC Envoy Xl

1 Answer

Blue thermostat light comes on after driving for 5 miles or so and stays on; after driving for 20 miles or so on occasion the oil pressure light comes on when car slows down and is idling.


when the thermostat in a beetle goes, it stays in the open position, so it could be you blue light is indicating a "cold system",change the thermostat.
the oil light will come on if low on oil or you have a low pressure,try using 10/40 semi synthetic oil.and mloyslip.if no improvement you will need to renew the oil pump.

Jun 18, 2010 | 2002 Volkswagen Beetle Turbo S

1 Answer

I have a service engine soon light on. I was told it was either the temp sensor or thermostat. replaced the thermostat and now the heat wont turn on.


Meaning your not getting any heat? I would suspect a higher temp thermostat was put in, and now its taking longer to get heat... Its also possible the thermostat is faulty... Either way, I would try a new thermostat again... The check engine light wont come on from a thermostat so change the CTS...

Jan 25, 2010 | 2001 Buick LeSabre

1 Answer

Check engine light comes on. diagnostic test


Never heard of a thermostat sensor. There is a diagnostic code that wil lbe set if the engine computer observes that the thermostat is not allowing the engine to reach operating temperature quickly enough. This code is based on information sent by the engine coolant temperature sensor. 99.9% of the time a new thermostat solves the problem. Use an AC Delco thermostat.

Dec 30, 2009 | 2003 Chevrolet TrailBlazer

1 Answer

Engine light has come on and the thermosat is not working properly


The engine light is probably on just because of the thermostat. Try with a thermostat you know is in order. If it works, change the thermostat.

Dec 15, 2009 | 2005 Chevrolet Equinox

3 Answers

The Toyota Camry engine light is on. Error Code P0125


Change bank 1 sensor 1 this will solve your problem. Tihs is a fuel issue nit a thermostat issue.

Jul 04, 2009 | 1998 Toyota Camry

2 Answers

Thermostat lights wont come on


Check the in dash lights to see if they are burnt out or you have a bad connection or bad wire. this could be do to having an after market sound system.I had similar problems with a 97 Plymouth Breeze i.e. loose connection.

Feb 05, 2009 | 1996 Ford Taurus

2 Answers

Replaced a thermostat on a 200 chevy blazer and the service light


low coolant, gas cap not tight, few other minor things. pay a mechanic 40 bucks to have them scan it in case it's something big.

Jan 06, 2009 | 2000 Chevrolet Blazer

1 Answer

Check engine light


sure you can have the codes checked. but lets look at your coolant temp not raising that tells me your thermostat is stuck open . the thermostat wont cause the engine light to come on and it wont say replace the thermostat it will give you the problems of running a cold engine. (try the thermostat)

Sep 09, 2008 | 2001 Chevrolet Venture

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