If you are swapping heads or need to plug a factory steam hole for whatever reason I show you how to do it using a factory plug and unconventional tool for automotive repairs.
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https://www.youtube.com/watch?v=IzItgtAuvgU
This cobalt had p2135, 2138, p0651 looked over the scan tool on this mobile call and the APP or accelerator pedal sensor was dropping out. Dont automatically assume its the throttle body or tps.
Bad ecu numbers: 5182 thru 5304
If you are looking for a affordable small code reader check this one out: https://www.amazon.com/LAUNCH-CReader-Professional-Automotive-Diagnostic/dp/B07CH4D68Q/ref=sr_1_7?keywords=kingbolen&qid=1551918315&s=gateway&sr=8-7
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https://www.youtube.com/watch?v=KaolHxDMJU4
Awesome electric ratchets by Milwaukee. It may seem a little flimsy with the plastic all around it at first but don't let that scare you, check it out..
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https://www.youtube.com/watch?v=kHeAi98bmtk
It was hard to get camera in there but this video shows what you need to know to replace your alternator on a MDX
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https://www.youtube.com/watch?v=utQlJjigJv8
This one was pretty obvious besides leaking coolant everywhere the pump was making a loud knocking noise and you can move the fan back and forth considerably even with the serpentine belt still attached.
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https://www.youtube.com/watch?v=OU5FyoV1GJE