How To Diagnose A P0128 - A Faulty Thermostat

Author channel AutoEclinic   4 год. назад

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How to Diagnose a Code P0128

SAVE MONEY and buy Motor Oils and Car Parts online - FREE SHIPPING!!! RECOMMENDED BY THE PEOPLES GARAGE What to check when P0128 Code comes on

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2003 Chevy Trailblazer p0128 Thermostat Replacement the EASY way !

Stupid Chevy ! Just Kidding, but why in the world did they hide the thermostat way down there ? I know I have absolutely Zero Idea on why they did it, but I do know that in this video I'm going to show you the Easy way to change out a thermostat on a 2003 Chevy Trailblazer with trouble code p0128. Parts used: ........I'm not paid for links ....... and A Gallon of Non diluted DexCool antifreeze if you can't recover your current antifreeze. The system calls for 2 gallons total. Tools Needed: 3/8" Ratchet 18" or longer extension 6" extension 3/8" or 1/4" swivel 3/8"-1/4" adapter if using 1/4" swivel 1/4" 10mm or use a 3/8" 10mm swivel socket IDEAL 3/8" torque wrench pliers flat head screwdriver extendable magnet

How to Test and Replace an Engine Coolant Temperature Sensor P0115 / P0125

In this video I go through the steps on determining why you may have code p0115. Ultimately, it comes down to two things, the harness connector or the coolant temperature sensor itself. A simple diagnosis that any one can perform at home. This was performed on a 1997 Nissan Maxima. Check with your vehicle's repair manual for testing parameters. »»» Subscribe: »»» Facebook: »»» Website: ***OTHER VIDEOS THAT MAY INTEREST YOU*** --- Wheel bearing replacement with basic hand tools: --- Choosing the best oil filter: Wix XP / Amsoil / Royal Purple.. --- Touch Screen car radio install: Tools Used: Safety Glasses Digital Multi Meter Note: This video is being performed by an experienced tech. Any attempt to repair automotive parts and/or systems carries risk of personal injury. Always adhere and follow safe practices when working on vehicles. Such as, use safety glasses, jack stands, no loose clothing, etc. No guarantee or warranty is implied. Use the information in this video at your own risk. Publication, reproduction or distribution of this film is strictly prohibited. Carsntoys


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A P0128 is a code is an indication of a faulty thermostat or ECT (engine coolant temp sensor). The manufacture designs the engine to run at a specific operating temperature for the most efficient operation. The thermostat regulates the coolant between the engine and radiator. If the thermostat sticks open or is weak, the coolant does not get to desired temp level. If the thermostat sticks the the engine will overheat causing damage. We simply show a quick way to check proper thermostat operation.

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