Tip & How-To about Toyota Pickup

Vehicle overheating tips

If your vehicle engine coolant temperature gauge indicates overheating, if you experience a loss of power,or if you hear a loud knocking or pinging noise, the engine has probably overheated. You should follow this procedure............

Pull safe off the road, stop the vehicle and turn on our emergency flasher. Put the transmission in "P" (automatic) or neutral (manual) and apply the parking brake. Turn off the air conditioning if it is being used.

If coolant or steam is boiling out of the radiator or reservoir, stop the engine. Wait until the steam subsides before opening the hood. If there is no coolant boiling over the steam, leave the engine running. CAUTION: To avoid personal injury, keep the hood closed until there is not steam. Escaping steam or coolant is a sign of very hing pressure.

Visually check to see if the engine drive belt (fan belt) is broken or loose. Lock for obvious coolant leaks from the radiator, hoses, and under the vehicle. However, note that water draining from the air conditioning is normal if it has been used. CAUTION: When the engine is running, keep hands and clothing away from the moving fan engine drive belt.

If the engine drive belt is broken or the coolant is leaking, stop the engine immediately and call your mechanic of assistance.

If the engine drive belt is okay and there are no obvious leaks, you may help the engine cool down more quickly by running it at about 1500 rpm for a few minutes with the accelerator pedal lightly depressed.

Check the coolant reservoir. If it is dry, add coolant to the reservoir while the engine is running. Fill it about half full. CAUTION:Do not attempt to remove the radiator cap when the radiator are hot. Serious injury could result from scalding hot fluid and steam blown out under pressure.

After the engine coolant temperature has cooled to normal, again check the coolant level in the reservoir. If necessary, bring it up to half full again. Serious coolant loos indicates a leak in the system. You should have it checked as soon as possible at your mechanic's workshop.

Good luck.

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1 Answer

my 2008 Pontiac torrent gage is stuck at the top where the over heating mark is but there is no other indicators that it is overheating what does this mean.


The engine control module (ECM) calculates the engine coolant temperature as determined by the coolant temperature sensor. The ECM sends the engine coolant temperature to the body control module (BCM) via the serial data circuit. The instrument panel cluster (IPC) displays the engine coolant temperature when the BCM sends a serial data message to the IPC indicating the engine coolant temperature. The engine coolant temperature gage defaults to 0° 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 BCM.
• The BCM detects a loss of serial data communications with the ECM

The place to start would be to hook up a factory or professional scan tool to see what the actual coolant temperature is ! At the PCM then at the BCM and finally at the instrument cluster . If normal the gauge is bad . The instrument cluster would need to be taken out of the vehicle an sent to be repaired . Or you could buy a used one out of a salvage yard or from on e-bay etc....

Dec 30, 2016 | 2008 Pontiac Torrent

1 Answer

My 1995 Chevy k1500 Silverado started running rough and lost power and the temp gauge keeps moving up and down.what is causing this


Could be your coolant temperature sensor is bad,here's a link to it. GET 35 GIFT CARD FOR EVERY 100 SPENT ON ONLINE SHIP TO HOME ORDERS ,Here's what it look's like.
  • Coolant temperature sensors provide coolant temperature data to the engine management system
  • When not replaced, vehicle could experience pinging, excessive hydrocarbons in oil resulting in premature engine bearing wear, spark plug fouling, catalytic converter failure, poor fuel economy and/or CEL/MIL illumination
Coolant Temperature Sensor at AutoZone com Best Coolant Temperature Sensor...

Aug 10, 2015 | Cars & Trucks

3 Answers

I have a 2004 durango 5.7l hemi that makes loud knocking rattling noise when started but cuts off right away. No codes could be found fro OBD. Oil level is fine, just a little dirty. Don't know wha


Engine noises don't leave fault codes unless the knock is so bad the engine is misfiring. When you say it "cuts off right away" do you mean the engine stalls or the knock goes away? If the answer is the knock goes away right away then you have a crank or rod bearing that is loose from wear, the oil pressure fills the excess bearing clearance gap and the knock stops.

Nov 22, 2011 | 2004 Dodge Durango

1 Answer

2001 Pontiac Montana. Van overheats (redlines) occasionally, which results in loss of heat (very cold air). When this happens lights flicker, like something is turned on??? After this their is a loss of power. While still driving van, engine will begin to cool down ( hear a valve or flapper moving???) Heat will come on again very strong, temperature returns to normal level and all is fine???. I have replaced thermostat and removed air pockets. Engine oil is fine, no coolant drop, no exhaust or interior smell. 205,000 km. What gives????


Where do you hear a valve or flapper moving??? Behind the dash ( instrument panel ) It sounds to like you have a electrical problem , not overheating problem . You need to test to see what the real engine temp. is . Also have vehicle checked for DTC'S - diagnostic trouble codes ,Sounds like A/C is kicking on , the flaper noise you hear is probably the temp actuator inside the dash . You can buy the tool in the video at harbor freight cheap. Point it at upper radiator hose ,near the engine . The IPC illuminates the hot coolant temperature indicator in the message center when the IPC determines that the coolant temperature is greater than 128°C (262°F). The IPC receives a class 2 message from the PCM indicating the coolant temperature. Are you getting any such message ?
How to Use an Infrared Thermometer to Diagnose Car Problems

May 07, 2017 | 2001 Pontiac Montana

1 Answer

where is the temperature sensor for the temperature gage


Engine Temperature Sensor Operation:00116_engine_temp_sensor.jpgThis sensor monitors the temperature of the engine and sends that information to the engine control computer to regulate the amount of fuel needed - more if engine is cold and less if it's hot. The signal generated can also be sent to the temperature gauge as a visual indicator of overheating and imminent danger

I checked with autozone.com and their site says that the engine temperature sensor is not used on both engine sizes available for this vehicle.

The Coolant Temperature Sensor is used though. So maybe it has a dual purpose on your vehicle.

Coolant Temperature Sensor Operation:00113_coolant_temp_sensor.jpgThis sensor monitors the temperature of the engine and sends that information to the engine control computer to regulate the amount of fuel needed. More fuel is needed if the engine is cold; less if it's hot. If the temperature is extreme, the signal will be sent to the temperature gauge as a visual indicator of overheating and imminent danger.

Because ECT (engine coolant temperature) sensor procedures vary depending upon their location, first locate the part. You may need to partially drain the engine coolant to prevent coolant spillage.
  • Disconnect the negative battery cable.
  • Unplug the ECT.
  • Then, unscrew it.
  • Reverse the removal procedures to install the new part.
  • Connect the negative battery cable to the battery.









Nov 03, 2010 | 1995 Chevrolet Caprice Classic

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