Question about 2002 Chevrolet TrailBlazer

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My exterior temperature digital readout stays at 50 deg. at all times. not a biggie, but i miss this feature.

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Get an ambient temp sensor and install it, its located on the driverside front of the vehicle near the radiator, that should fix the issue. the sensor is fairly cheap if i remember correctly

Posted on Aug 02, 2009

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1 Answer

Loss of power


Forenza 2004
this is a Suzuki, id sell it, and is not even real Suzuki its a badged
product. actual. Daewoo Lacetti
Daewoo can't sell cars here so suzuki tries and fails... amazing car.

p0217 means overheated.
and when overheated power is lost. stop that or burn up the engine.
do the service on engine, 60,000 miles. steps.
and a new thermostat. i bet yours is 10 years old,,huh and END of life.
non last over that.
id sell it. when fixed, Suzuki's are no good.

FSM data.
Trouble Code Conditions:
Engine is running. Engine coolant temperature is higher than 50 Deg C (122 deg F). Intake Air Temperature (IAT) is higher than 35 deg C (95 deg F). Engine soak time is higher than 360 minutes, or start-up coolant temperature is less than 45 deg C (113 deg F). Engine Coolant Temperature (ECT) sensor reading is greater than 107 deg C (224.6 deg F).
Possible Causes:
  • Sensor ECT
  • Circuit
  • ECM

the fsm skips bad thermostat. odd that... huh"?
and dead cooling fans.
and clogged radiator.
etc.
the first step is to see if it really is overheated, with a IR pyro gun.
if not, the ECT is bad
if is overheated, then fix that, as the ECT didnt lie.

simple , the sensor lied, (nah) or did overheat.

or air pockets at the ECT, low coolant actual.

Feb 23, 2014 | 2004 Suzuki Forenza

1 Answer

How many thermoststs does the nissan nomad have


1 this being the specifications on it
Features & Benefits Quality Controlled Factory Calibration Assures Accuracy Of Opening & Closing, Regardless Of Pressure Changes. Positive Piston Heat Motor Provides Accurate Temperature Control. Sturdy Metal Construction Throughout. Attributes Depth from Flange : .82"
Design : Offset
Flange Diameter : 2.125"
Height from Flange : .91"
Jiggle Pin : Yes
Temperature Range : 195 Deg
Warranty Limited Lifetime-See Manufacturers Written Policy
Warranty PDF
Material Safety Data Sheet (MSDS) There is no MSDS for this item Application Information: 1990 Nissan Van Engines : 2.4 L 2389 CC L4 SOHC
Comments: 195 Degrees;Alternate Temperature
Per Car Qty: 1


Features & Benefits Quality Controlled Factory Calibration Assures Accuracy Of Opening & Closing, Regardless Of Pressure Changes. Positive Piston Heat Motor Provides Accurate Temperature Control. Sturdy Metal Construction Throughout. Attributes Depth from Flange : .82"
Design : Offset
Flange Diameter : 2.125"
Height from Flange : .91"
Jiggle Pin : Yes
Temperature Range : 195 Deg
Warranty Limited Lifetime-See Manufacturers Written Policy
Warranty PDF
Material Safety Data Sheet (MSDS) There is no MSDS for this item Application Information: 1990 Nissan Van Engines : 2.4 L 2389 CC L4 SOHC
Comments: 195 Degrees;Alternate Temperature
Per Car Qty: 1
Features & Benefits Quality Controlled Factory Calibration Assures Accuracy Of Opening & Closing, Regardless Of Pressure Changes. Positive Piston Heat Motor Provides Accurate Temperature Control. Sturdy Metal Construction Throughout. Attributes Depth from Flange : .82"
Design : Offset
Flange Diameter : 2.125"
Height from Flange : .91"
Jiggle Pin : Yes
Temperature Range : 195 Deg
Warranty Limited Lifetime-See Manufacturers Written Policy
Warranty PDF
Material Safety Data Sheet (MSDS) There is no MSDS for this item Application Information: 1990 Nissan Van Engines : 2.4 L 2389 CC L4 SOHC
Comments: 195 Degrees;Alternate Temperature
Per Car Qty: 1
Attributes Depth from Flange : .82"
Design : Offset
Flange Diameter : 2.125"
Height from Flange : .91"
Jiggle Pin : Yes
Temperature Range : 195 Deg
Attributes Depth from Flange : .82"
Design : Offset
Flange Diameter : 2.125"
Height from Flange : .91"
Jiggle Pin : Yes
Temperature Range : 195 Deg
Depth from Flange : .82"
Design : Offset
Flange Diameter : 2.125"
Height from Flange : .91"
Jiggle Pin : Yes
Temperature Range : 195 Deg

Feb 27, 2011 | 1990 Nissan Minivan

1 Answer

PO115 the mill it is on and the car not start normaly to mach smoce to the exoste


Engine Coolant Temperature Circuit Malfunction...

What does that mean? The ECT (Engine Coolant Temperature) sensor is basically a thermistor that changes resistance with temperature. Usually a two wire sensor, a 5Volt reference from PCM (Powertrain Control Module) and ground signal to PCM. This is different from a temperature SENDER (which usually operates the dash temperature gauge and operates in a similar way as the SENSOR, only it's a different circuit than what a P0115 is referring to). As the temperature of the coolant changes, the resistance changes on the ground signal to the PCM. When the engine is cold, the resistance is high. When the engine is warm, the resistance is low. If the PCM detects a voltage condition that seems abnormally low or high, P0115 will set.

Symptoms Symptoms of a P0115 DTC code may include:
  • MIL (Malfunction Indicator Lamp) illumination will always occur
  • Vehicle may be hard to start
  • May blow a lot of black smoke and run extremely rich
  • Engine may want to die or backfire in tailpipe
  • Engine may run lean and increased Nox emissions may be apparent (Requires gas analyzer)
  • Cooling fans may run all the time when they shouldn't be, or not at all when they should be
Causes Usually the cause can be traced to a bad ECT sensor, however that doesn't preclude the following:
  • Wiring or connector damaged at sensor
  • Open or short in reference or signal circuit
  • Open or short in signal circuit
  • Bad PCM
Possible Solutions 1. First, visually check the sensor for damage to wiring or connector and repair as necessary. Then, if you have access to a scanner, determine what the temperature of the engine is. (If you don't have access to a scan tool, using the dash temperature gauge may not be an effective way to determine coolant temperature. This is because the P0115 code is referring to the ECT SENSOR, and the dash gauge is operated by, usually a one-wire SENDER. Basically a different sensor that the code doesn't refer to.)

2. If the engine temperature is abnormally high, around 280 deg. F, that's abnormal. Unplug the sensor on the engine and see if the signal drops to, say, negative 50 deg. F. If it does, then it's a good bet the sensor is bad, internally shorted, causing a low resistance signal to be sent to the PCM. However if you want to be sure it's the sensor and not the wiring, there's a couple tests you can do. With the ECT sensor unplugged, check that you have 5 volts on the reference circuit with KOEO (Key on engine off). Also you can check the resistance of the sensor to ground using an Ohm meter. The resistance of a normal sensor to ground will vary a little depending on the vehicle, but basically, if the temp of the engine is around 200 deg. F., the resistance will be about 200 Ohms. If the temperature is about 0 def. F., the resistance will be over 10,000 Ohms. With this test you should be able to tell if the resistance of the sensor matches the temperature of the engine. If it's not accurate according to your engine's temperature, then you probably have a bad sensor.

3. Now, if the temperature of the engine according to the scanner is around 280 deg. F. and unplugging the sensor doesn't cause the reading to drop to negative 50 deg. F, but it stays at the same high temperature reading, then you'll need to repair the short on the signal circuit(ground) to the PCM. It's shorted directly to ground somewhere.

4. If your temperature reading of the engine according to the scanner is showing negative 50 deg. F or so, (and you don't live in the arctic!) unplug the sensor and check for a 5V reference present at the sensor.

5. If there isn't, then check at the PCM connector for proper 5V reference. If it's present at the PCM connector, then repair the open or short on 5V reference from PCM. If there is no 5V reference present at the PCM connector, then you're done with your diagnosis and you may have a PCM fault. 6. If the 5V reference circuit is intact, then check the ground signal to the PCM using the previous ground resistance test. If the resistance isn't normal for the temperature of the engine, then ohm the resistance of the ground signal to the PCM by removing the ground signal wire from the PCM connector. The wire should have no resistance, unplugged from the PCM to the sensor. If it does, repair open in the signal to the PCM. If it doesn't have any resistance on the ground signal wire and the resistance test of the sensor is normal, then suspect a faulty PCM.

Hope that helps, please rate me!

Feb 07, 2011 | 2001 Hyundai Santa Fe

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What type of engine oil does a Peugeot 306 (1.6 petrol engine) need?


Engine oil specifications for Peugeot 306 1.6 petrol engine:

1. SAE 5W-40, API SH or SG, for temperatures between -30 Celsius deg. and +40 Celsius deg.
2. SAE 10W-40, API SH or SG, for temperatures between -15 Celsius deg. and +40 Celsius deg.
3. SAE 15W-40, API SH or SG, for temperatures between -10 Celsius deg. and +40 Celsius deg.
4. SAE 15W-50, API SH or SG, for temperatures between -10 Celsius deg. and +50 Celsius deg.
5. SAE 20W-50, API SH or SG, for temperatures between -5 Celsius deg. and +50 Celsius deg.

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What is the normal operating temperature for a 4.9 liter motor. for a 1992 eldorado


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Nov 01, 2010 | 1992 Cadillac Eldorado

3 Answers

Digital external readout stays at 50 degrees, constantly. Not a big concern, just annoying. Heat and A/C work fine Digital reads change when using those functions but exterior always says 50. If cheap,...


External sensor is most bad or cloged. Remove the plastic cover that the hood prop rod fastens to and you will see the sensor. I purchased mine from the dealer for twenty dollars. If it gets worse and reads below 32 degrees your a/c will not come on. This happened to me in July.

Jan 21, 2010 | 2002 GMC Envoy

1 Answer

My 1997 Buick Century Limited, the digital temperature display does not show interior, exterior temperature, nor whether it is blowing on the windshield, floor, etc. How do you get it to work, unit works...


as far as i know-no bulb for digital readout on that one. sounds like control head is bad... check fuses etc. also looking at a diagram loooks like display power runs through the headlight switch? seems odd but a place to look. most likely head though try used or in dewitt ny there is a place called united radio that fixes-rebuilds these look em up i use them from time to time

Aug 24, 2009 | Buick Century Cars & Trucks

1 Answer

Exterior temperature won't go higher than 50 degrees


REPLACE THE TEMP SENSOR IN FRONT OF THE RADIATOR AND SEE IF THAT CORRECTS THE PROBLEM.

May 04, 2009 | 2002 Chevrolet Trailblazer Ext

1 Answer

Air temperature readout stuck at 50


It does sound like a sensor problem. Not sure where the sensor its self is, but they are usually by the drivers side mirror, or underneath the windsheild valance. They need to be placed in a area where wind wont give false readings due to wind chill factors. Any dealership should be able to tell you. good luck. John...

Jan 10, 2009 | 2004 Oldsmobile Bravada

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