Question about 2000 Volkswagen Beetle

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Coolant Temp Sensor

I just had my car ran on a diagnostic and the code was my coolant temp sensor so i have the part but need to know how difficult it is to replace? Can you help?

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On a difficulty rating I would gauge this at a 3. Just don't over tighten the nuts or bolts when installing ;). (5-8 lbs of torque is plenty)

Posted on Aug 17, 2008

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Posted on Jan 02, 2017

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Engine temp gauge not reading and ac will not turn on due to engine hot warning, diognostics say its a sensor, need to know which one and can i do it myself?2003 saturn vue


What diognostics say its a sensor ?????? No diagnostic's ever tell's you it's a sensor . You as a technician would need to prove that by testing electrical circuits , viewing coolant temp sensor . Hooking scan tool and trying to command the gauge with by directional control . The temp gauge not showing any temp. ? No movement ? Engine Coolant Temperature Gage Inaccurate or InoperativeStep Action
Yes
No
Schematic Reference: Instrument Cluster Schematics
1
Did you perform the Instrument Cluster Diagnostic System Check?
Go to Step 2
Go to Diagnostic System Check - Instrument Cluster
2
Install a scan tool.
Turn the ignition ON, with the engine OFF.
With the scan tool, perform the Lamp and Gauge Check in the IPC Special Functions list.
Does the engine coolant temperature gage move up and down when commanded?
Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems
Go to Step 3
3
Replace the IPC. Refer to Instrument Cluster Replacement .
Did you complete the replacement?
Go to Step 4
--
4
Operate the system in order to verify the repair.
Did you correct the condition?
System OK
Go to Step 2
Would hate for you to replace the coolant temp sensor an find out that's not the problem ! Does the vehicle start an run good ,trans mission shift good ? If so it's not the coolant temp sensor .
Engine Coolant Temperature Gage
The ECM sends coolant temperature as determined by the coolant temperature sensor to the BCM via CAN serial data. The IPC displays the engine coolant temperature with the gage when the BCM sends a class 2 message to the IPC indicating coolant temperature percentage. The engine coolant temperature gage defaults to cold (0°) or below if:
• The ECM detects a malfunction in the engine coolant temperature sensor circuit.
• The IPC detects a loss of class 2 communications with the BCM.
• The BCM detects a loss of CAN communications with the ECM.

Aug 19, 2017 | AC Cars & Trucks

2 Answers

We're is the coolant temperature sense located on a 2008 trailblazer lt


Hi Janice , Before I say where the coolant temp. sensor is I'd just like to make you aware of a couple of thing's before you replace this sensor needlessly .It's one thing if you have a DTC diagnostic trouble code for the sensor but another if your temp. gauge isn't work ! You see the coolant temp. sensor is an input to the engine computer , not directly to the temp. gauge.
The instrument panel cluster (IPC) displays the engine coolant temperature as determined by the engine control module (ECM). The IPC receives a serial data message from the ECM indicating the engine coolant temperature. The engine coolant temperature gage defaults to 100°F (40°C) or below if: ?€¢
The ECM detects a malfunction in the engine coolant temperature sensor circuit.


?€¢
The IPC detects a loss of serial data communications with the ECM.

Jan 01, 2016 | 2008 Chevrolet TrailBlazer LT

1 Answer

What is diagnostic code 22 for a 1994 Jeep Cherokee grand limited


That code is for the engine coolant temperature sensor. "...input above maximum acceptable voltage." I would try a new temp. sensor. If that doesn't fix it, you may need to have an engine scanner hooked up, and see what the sensor is sending to the computer, and go from there.
A bad coolant temp. sensor can cause hard starting like your symptoms.
.

Apr 25, 2014 | 1994 Jeep Grand Cherokee

1 Answer

Primary cooling fan only comes on when i turn ac on


You would need a scanner and an inferred temp sensor to troubleshoot the system.
You need to know what the actual engine temp is, and what the temp sensor is telling the computer.
If and when the engine reaches 220 degrees, the engine temp sensor should be sending that data to the computer and it should ground the fan relay to activate it.
Unplugging the sensor and having the fan run tells you the sensor is connected, and there should have been a trouble code set at that time.
It is possible the coolant level is low, or something else preventing the temp sensor sending the correct data.

Apr 16, 2013 | 2002 Chevrolet Malibu

3 Answers

I HAVE A 2007 CHEVY COBALT THE CHECK ENGINE LIGHT CAME ON I CHECKED THE COOLANT TEMP GAUGE THE DIGITAL GAUGE READING WAS ONLY SHOWING THREE BROKEN LINES. I CHECKED COOLANT LEVEL WHICH WAS FINE. ENGINE DID...


I had this problem with a 2007 Chevy Cobalt. I changed the coolant sensor and even though the check engine light went out I still had a reading of "---" on the coolant gauge. The problem is most likely one of three things: a low coolant level, a bad coolant sensor, or the thermostat needs to be replaced. The only other possible thing it could be is a bad BCM (Body Control Module) which in that case you would most likely be having other weird problems.

The Thermostat and the sensor are both very easy to get to and replace. Take off the engine cover by removing the oil cap and they are both to the rear of the engine on the driver's side. They are right next to each other.

Hope this helps!

Apr 14, 2010 | 2007 Chevrolet Cobalt Coupe

1 Answer

Replaced coolant temp sensor like diagnostic code said too didnt help none.it runs ok going down hiway but when i slow down or come to a stop it stalls out wont idle on its own.


There a 2 coolant temp sensors. One for the guage and the other for the computor. You need to replace the one for the computor. With a faulty coolant temp sensor for the computor, it doesn't recognize a cold start to cycle. You know when the engine idles higher when you first start it up in moring then the idle drops as the motor warms up.

Apr 05, 2010 | 1992 Toyota Paseo

1 Answer

Coolant temp below thermostat regulating temp


more than likely the thermostat has stuck open. Or opening to soon not allowing the car to reach normal operating temperature. I would start by replacing the thermostat. Clearing the code and running a drive cycle and see if the code comes back. if the code does not return problem solved. if it does return replace the coolant temp sensor.

Oct 17, 2009 | 2005 Pontiac Grand Prix

1 Answer

Getting a low coolant temp code.temp is normal. im


Sometimes there are two Temp sensors. Did you see if you had two?

Jul 29, 2009 | 1997 Toyota Tacoma

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