First Problem with 2007 HHR LS
Member
Joined: 04-27-2006
Posts: 89
From: Lafayette indiana
I think you have a bad sensor,Your not the first to report this problem,
as always, check that fuse box under the hood and make sure all the fuses are seated. On mine I have to drive 8 to 10 miles before the reading seems correct....
as always, check that fuse box under the hood and make sure all the fuses are seated. On mine I have to drive 8 to 10 miles before the reading seems correct....
Thread Starter
Joined: 02-07-2007
Posts: 9
From: Indianapolis
The coolant temperature gage on the Dash & DIC. I just bought a new 2007 HHR LS on Monday of this week, and this happen on Tuesday morning. Both are working now. It just happen once When the outside temperature reached -2 degrees is when it did not work. As soon as the outside temperature reached above zero degrees is when it started working, and has worked fine since.
Senior Member
Joined: 07-12-2006
Posts: 390
From: Derby, KS
Document ID 1850744 from GM. Inaccurate outside temperature display
Applies to the following Vehicles
The outside air temperature algorithm uses 3 pieces of information, outside air temperature data, vehicle speed and the time the engine was turned off. When the engine is first started , the algorithm looks at how long the engine was off and if the outside temperature is lower than the last reading taken during the previous ignition cycle to determine if a new outside temperature reading should be taken. If the engine was off long enough or the current outside air temperature is cooler than the stored value, a new outside temperature reading is taken and displayed in the cluster. If the engine was not off long enough or the current outside air temperature is higher than the stored value from the previous ignition cycle, then the last stored value (outside air temperature) taken will be displayed. The outside air temperature will be updated every second as long as the outside air temperature is the same or cooler than the previous reading.
Once the outside air temperature reading exceeds the previous temperature & the vehicle is traveling less than 18 mph, the displayed outside air temperature will remain at it's last value. Once the speed exceeds 18 mph the displayed outside air temperature will be updated. If the speed drops below 18 mph the temperature will freeze at it's last value.
(FYI) the docment was torn or illegible in a few spots. I did my best to fill in the gaps based on the context.
Applies to the following Vehicles
- 2005-2007 Chevrolet Cobalt
- 2006-2007 Chevrolet HHR
- 2007 Pontiac G5
- 2005-2006 Pontiac Pursuit (Canada Only)
- 2006-2007 Pontiac Solstice
- 2007 Saturn Sky
The outside air temperature algorithm uses 3 pieces of information, outside air temperature data, vehicle speed and the time the engine was turned off. When the engine is first started , the algorithm looks at how long the engine was off and if the outside temperature is lower than the last reading taken during the previous ignition cycle to determine if a new outside temperature reading should be taken. If the engine was off long enough or the current outside air temperature is cooler than the stored value, a new outside temperature reading is taken and displayed in the cluster. If the engine was not off long enough or the current outside air temperature is higher than the stored value from the previous ignition cycle, then the last stored value (outside air temperature) taken will be displayed. The outside air temperature will be updated every second as long as the outside air temperature is the same or cooler than the previous reading.
Once the outside air temperature reading exceeds the previous temperature & the vehicle is traveling less than 18 mph, the displayed outside air temperature will remain at it's last value. Once the speed exceeds 18 mph the displayed outside air temperature will be updated. If the speed drops below 18 mph the temperature will freeze at it's last value.
(FYI) the docment was torn or illegible in a few spots. I did my best to fill in the gaps based on the context.
Platinum Member
Joined: 05-09-2006
Posts: 6,805
From: "Upland" Mesa, Arizona
dbfruth....
I don't believe the document you posted can be applied to ginindy's problem.
Your document is for the "outside air temperature" and, according to his post, his problem is with the "coolant temperature". I believe each of these have their own dedicated sensors.
I don't believe the document you posted can be applied to ginindy's problem.
Your document is for the "outside air temperature" and, according to his post, his problem is with the "coolant temperature". I believe each of these have their own dedicated sensors.
Gotta love wearing shorts in February 
Senior Member
Joined: 08-20-2006
Posts: 21,640
From: Hillsdale, Michigan
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