Temp Gauge Saga
Thread Starter
|
Junior Member
Joined: Aug 2012
Posts: 9
Likes: 0
From: Loughborough
Temp Gauge Saga
Ive just changed my water temp sensor and thermostat to cure my low temp reading on the gauge, but still it reads in the blue all the time.
Heater is working fine and the fans are not running, any ideas what i should look at next.
Hammo.
Heater is working fine and the fans are not running, any ideas what i should look at next.
Hammo.
Veteran member
Joined: May 2008
Posts: 14,803
Likes: 4,100
From: Great Mills, MD
Hammo, i want you to try something (preferably right after a long drive). Go out to your car and sit in the driver's seat. Depress the TRIP button on the end of the turn signal stalk and hold it in. Now, start the car with the TRIP button depressed. You should see the dash indicate (ENGINEERING TEST MODE). Once you see this message, release the TRIP button. At this point, the dash is going to be doing a lot of funny things, so, do not be too worried. You may see all the dash lights light up, the gages do full sweeps, this is all normal. You must release the TRIP button within 3 seconds of seeing the message else the instrument cluster will kick itself out of this test mode and revert back to all normal indications. Repeat if necessary to get into the mode.
Once in the Test Mode, press the button that converts between metric and english next to the headlight switch. You should see the instrument message screen changing indications. You are looking for either an indication of "CG" or "dECG" (varies based on your year of car and what the ECM is flashed to. You will see a number after it too. If you see "CG", you are ideally looking for a number at about 90 with the car at normal temp. If you are seeing a number down around 60, then your computer is seeing the car running too cold (ie, the temp sensor is bad). If you are seeing a number up around 90 but the temp gauge is reading low, then you have a problem with the instrument cluster itself (unlikely since you are not seeing the fans kick on). If you are getting the "dECG" indication, you should see a 3 digit number. This is the temp that the computer is seeing expressed as degrees Celsius with a decimal added in before the last number (ie, 892 is 89.2C). You should be seeing a number around 90-95C. If you are down around 50C, this is a sign that your temp sensor is bad.
Once you have found out the information, press the TRIP button again and you will exit out of the test mode.
Lets see what you have there and then we can take things as we get more information.
Once in the Test Mode, press the button that converts between metric and english next to the headlight switch. You should see the instrument message screen changing indications. You are looking for either an indication of "CG" or "dECG" (varies based on your year of car and what the ECM is flashed to. You will see a number after it too. If you see "CG", you are ideally looking for a number at about 90 with the car at normal temp. If you are seeing a number down around 60, then your computer is seeing the car running too cold (ie, the temp sensor is bad). If you are seeing a number up around 90 but the temp gauge is reading low, then you have a problem with the instrument cluster itself (unlikely since you are not seeing the fans kick on). If you are getting the "dECG" indication, you should see a 3 digit number. This is the temp that the computer is seeing expressed as degrees Celsius with a decimal added in before the last number (ie, 892 is 89.2C). You should be seeing a number around 90-95C. If you are down around 50C, this is a sign that your temp sensor is bad.
Once you have found out the information, press the TRIP button again and you will exit out of the test mode.
Lets see what you have there and then we can take things as we get more information.
Thread
Thread Starter
Forum
Replies
Last Post
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)