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I have a VW Eurovan 1994 diesel 2.4 litres.My temperature gauge is going up and down without reason.I changed the thermostat and the sensor.I still have the same probleme.Gilbert

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Verify that your engine is actually overheating. If your engine is NOT running hot then you have a problem with the instrument cluster. If your engine IS running hot and/or overheating then look for oil in your water or water in your oil. You may have a leaky head gasket

Posted on Oct 14, 2010


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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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2002 dodge diesel Temperature gauge not working,have changed Coolant temperature sensor, still not working

possibly change the wrong unit
gauges work from a sender unit not a sensor
it is located next to the thermostat housing normally and has only 1 wire connection
they work by having power through the gauge to the sender through variable resistance that is affected by heat to ground
test disconnect the wire from the sender
turn on the ignition key , ground out the wire and the gauge should go straight to full hot
sensors on the other hand have more wires and relay the coolant temp to the ECM so that air/fuel ratios can be adjusted , and fans switched on as required

Oct 12, 2016 | Dodge Cars & Trucks

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What is the running temperature for a kia sportage 2 litre deisil automatic

In the most general of terms a diesel engine would operate at 86-92 C.

However, much depends on the distance you are driving. On a very short trip(s) your needle is unlikely to get much above cold on the gauge. That's because an engine needs a minimum of 5 miles before the thermostat begins to open to allow coolant to circulate, and 10 miles before your engine is getting to 'normal operating temperature'.

The ideal position of the needle is N - normal ... midway between cold and hot.

If, on a long run, the needle doesn't get much past the cold mark it's probably due to either a faulty coolant sensor temperature sending a wrong reading to the gauge, or a thermostat which is stuck in the open position.

If the needle is indicating too hot - again it could be a faulty temperature sensor, a faulty thermostat - or other problems.

With a fully warmed engine and sitting in traffic/idling your needle would creep from Normal to Hot .. and then the electric fan would kick in.

Apr 14, 2016 | Kia Cars & Trucks

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Will a 2011 2 litre diesel motor fit a 2011 1.6 litre diesel VW Golf

If you drain out the gas from tank and fuel lines and turn over engine the old one may work without replacing engine . Call a good junk yard to veify fit of used engine and transmission .

Nov 08, 2014 | Haynes VW Golf, GTI & Jetta Repair Manual...

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Vw golf 2 litre 8 valve wont idle when cold

This is sounding like a "Cold start" sequence is not working. Check with an autoparts store for what Temperature sensors your vehicle has. Many have 2 sensors, one for the dash gauge and the other for the engine controls.

A good sensor is needed to activate the "Cold start" circuit. If the sensors are good, then your computer may need reprogramming.

Jan 23, 2012 | Mercedes-Benz 300-Class Cars & Trucks

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Changed the thermostat on a 1994 Corsica 2.2 4 cylinder because the gauge was moving from the 1/4 position to 1/2 of temperature range. What do you think could be causing this swing in temperature

Your fan coming on to cool the engine coolant is the reason it fluctuates, but the temperature sensor or gauge are only as good as their condition-in other words, the best way to determine if your fluctuations are from the sensor, gauge, thermostat or even the PCM is to use a remote temperature gauge, an infrared hand-held temperature gauge, or replace the sender, then thermostat. Doing the last two is probably the easiest and least expensive.

Jan 03, 2011 | 1994 Chevrolet Corsica

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My car over heated and now my gauge isn't working. So I'm assuming my thermostat is broken

no your temperature sensor is broken. thats what gives the gauge the reading. you may need a thermostat for different reasons. did you know why the car overheated?

Jun 27, 2010 | 1994 Subaru Loyale

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I have an 1995 eurovan camper it appears when the temperature gets to about 3/4 on gauge my transmission kicks out stops working i pull to side of road turn van off let cool down to about 1/2 on gage and...

check your fluid levels first, and if its getting over 1/2 on your gauge you have cooling problems, check fluid levels, your transmission lines run through a part of the radiator in order to cool them, so you need to resolve the cooling problems

Jul 04, 2010 | Volkswagen Eurovan Cars & Trucks

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Where is the temperature sending unit on a 1999 VW Passat located.

VW Passat & Audi A4 1990-2000

Motronic System
The Engine Coolant Temperature (ECT) sensor is mounted in the water outlet on the back side of the head. If you vehicle still has a original VW part it will be black in color with a four terminal connector. This device signals the engine management system with the current coolant temperature, the ECU takes this information and uses it to control other such circuits as the idle speed, knock control system, oxygen sensor circuit, exhaust gas recalculation, and fuel tank venting. It is also important to note that if at any time ECU does not receive a signal from the ECT it will substitute a value of 176°F (80°C).

The Engine Coolant Temperature sensor is mounted in the thermostat housing. The body of the sensor will be blue and the sensor will be blue and have two terminals if it is an original factory VW part.

The engine coolant temperature gauge uses a heat sensitive sending unit to transmit an electrical signal to the gauge. The sending unit is a heat sensitive variable resistor that is located on or near to the cylinder head and threads into an engine coolant passage. The sensors are a Negative Temperature Coefficient (NTC) type. As the temperature increases, the electrical resistance of the sensor decreases. As the coolant temperature changes, so does the resistance of the sensor. The gauge is calibrated within the operating range of the sensor and interprets the resistance value to display the coolant temperature.On models produced prior to 1994, the engine coolant gauge temperature sensor is a single wire terminal sensor.

Beginning with model year 1994, the engine coolant gauge and the Engine Control Module (ECM) temperature sensors were combined into one sensor with 4 terminals. The basic operation remains the same in that their resistance decreases as the coolant temperature increases, however the actual resistance values of the 2 sensor circuits are different. The electrical connector of the 4-wire terminal sensor (1 and 2) is keyed to prevent improper connection of the sensor's electrical circuit.

WARNING When trouble shooting electrical components, always consult a wiring diagram for the particular year, make and model to ensure proper test equipment connection and diagnosis. Failure to use suitable test equipment and testing methods could permanently damage the electrical component(s).


Fig. Beginning with model year 1994, the Engine Coolant Temperature Sensors combined the sensors for the ECM and the gauge into one sensor-1997 2.8L V6 sensor shown


Fig. The electrical connector for the combined temperature sensors is keyed to avoid improperly connecting the sensor's wiring-1997 2.8L V6 connector shown

I hope help you with this, good luck (remember rated this help).

Oct 13, 2009 | 1999 Volkswagen Passat

2 Answers

Car is heating up? I checked the plastic spherical object and liquid is at max!. The oil is a little low could this be the cause of the temperature gauge rising above 90?

Yes it can be. Might be something else, but could be the oil. Change the oil with Castrol 10w40 and add Lucas additive and see if there are any changes. Also check the thermostat. Make sure your fan is turning.

Jul 24, 2008 | 1994 Volkswagen Golf

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