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2005 Trailblazer 4.2 #6 cylinder misfire

Case study on a 4.2l C.O.P engine with a misfire. For more info. on my Ebook go to www.autocomputerstroubleshooting.com How to perform an injector balance test with a scan tool.


 


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1999 Honda Accord No Start (case study)
For more on Engine Performance Diagnostics go to my website at www.scannerdanner.com I am doing field work in this video on a 1999 Honda Accord with an intermittent no start complaint. Other symptoms include: stalling, long crank times, surging, bucking, poor transmission shifting.





Chevy Trailblazer misfire DIY diagnosis - step one - p0301 p0302 p0303 p0304 p0305 p0306
Here I have a Chevy Trailblazer with a P0302 - cylinder #2 misfire. I show you the basic troubleshooting steps that you can do that only require a code reader and a few hand tools. This procedure can be done regardless of which cylinder is misfiring. First, I swap the coil of the misfiring cylinder with another cylinder. At the same time, I swap the plug of the misfiring cylinder with another cylinder that is NOT the one that I swapped coils with. I then clear the codes and then run the engine. If the misfire moves to the cylinder that I swapped coils with, then I have a bad coil. If the misfire moves to the cylinder that I swapped plugs with, then I have a bad plug. If the misfire stays on the same cylinder, the problem lies elsewhere. Further steps will be shown in future videos. Big thanks to Bill (Kristis Dad) from trailvoy for donating the bad coil!!! UPDATE June 2013 - I know you can also unplug the coils with the engine running to isolate the cylinder. If you want to show that to these guys, how bout YOU make a video. When the average youtube user, who doesn't have much experience doing stuff like that, gets hurt, YOU can live with that on your conscience. I know I couldn't. SMFH.





2000 Ford Focus EGR System Tests
For those of you that have my eBook, you can follow along in Section 3 "Transistor Drivers and Output Solenoids" for the EVR solenoid testing that I am doing. Also Section 24 "EGR Systems" for more details on this system. For those of you that don't have my eBook yet, you can purchase it at www.autocomputerstroubleshooting.com





2002 Ford Escape 3.0 Misfire Case Study
Within this video I am covering parts of Section 1 and Section 22 in my eBook available at www.scannerdanner.com. For more on the Picoscope and the WPS500 pressure transducer I am using go to www.picoauto.com.





Solving Engine Performance Issues (Part 1) - EricTheCarGuy
Visit me at: http://www.ericthecarguy.com/ See Part 2 http://www.youtube.com/watch?v=sAKwCzUE_9M Vacuum leaks http://www.youtube.com/watch?v=9CPqbaSgcok+ Voltage leaks http://www.youtube.com/watch?v=x-U9WqJfaJs Power Balance http://www.youtube.com/watch?v=bAOmUjAjNjE Compression testing http://www.youtube.com/watch?v=X_tbksFYhl4 Leak down testing http://www.youtube.com/watch?v=WgrfT0LFMhc&feature=relmfu I get a lot of questions via email and over at the forum about the steps to take when you encounter a performance issue like my Subaru's hesitation issue and I often feel like I sound like a broken record when I cover the basic steps that I cover when encountering a situation like that. My main point here is that if you have a performance problem and you're going to throw parts at the problem start with the basics before you to off and start replacing sensors that you suspect are a problem, if you don't have evidence of a faulty sensor then don't start there start with the simple tune up items and check for vacuum leaks and air leaks as I've shown here and I believe you'll have better results and save yourself some money in the process. In short the rule of KISS applies, Keep It Simple Stupid. If you have questions about your own engine performance issues head over to my website and either ask the search function or ask the forum, we'd be happy to help. http://www.ericthecarguy.com/forum/default.aspx --- Click below and Stay Dirty Visit me at EricTheCarGuy.com http://ericthecarguy.com/ Visit EricTheCarGuy Forum http://www.ericthecarguy.com/forum/default.aspx Visit my Facebook Page: http://www.facebook.com/EricTheCarGuy --- Stay dirty ETCG Due to factors beyond the control of EricTheCarGuy, it cannot guarantee against unauthorized modifications of this information, or improper use of this information.  EricTheCarGuy assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. EricTheCarGuy recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video.  Due to factors beyond the control of EricTheCarGuy, no information contained in this video shall create any express or implied warranty or guarantee of any particular result.  Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not EricTheCarGuy.





Fixed Rich O2 (Is the sensor lying?)
How to determine if your oxygen sensor is bad, or if you have an actual rich or lean condition. Trouble codes normally associated with this condition: P0171, P0174, P0172, P0175 plus O2 related codes. In our case a P0300 was the only code in memory. There are multiple ways to identify a faulty O2 sensor, I show three different techniques in this video. Visit my website, www.scannerdanner.com for more about my eBook and lectures. Visit our school www.rosedaletech.org, to be part of my class in person. Visit http://www.youtube.com/channel/UCs2NZ_wQFDFvV0QOhoZgASA if you would like to be part of my on-line class.





Trailblazer check engine light on - reading codes and other fun facts
This is the most frequent question that folks axe me about. So, I went out and bought two budget friendly code readers to show you the first things to do when the check engine light comes on. The first code reader is the ELM327 (made by BAFX). You use this with an android phone, along with the torque app. This unit communicates with the phone wirelessly over bluetooth. The second reader is the actron cp9125. No phone required. I bought both of those tools from amazon. They had the best price. The last tool is my GM scan tool. I showed this only to prove that the cheaper tools will pull the same codes that the GM tool does.





2005 Chevy Trailblazer MAP Sensor Trouble Code P0106
To learn more DIY engine performance diagnostics check out my website at www.scannerdanner.com For those of you that already have my eBook, this video can be used to support Sections 8 "Pressure Sensors" and Section 20 "Idle Speed Controls"





Using Idle Air Control (IAC) position to ID a vacuum leak
This is the first of two case studies that will re-enforce my "Vacuum leak testing without a smoke machine" video/lecture.





How to find a misfire without a scanner 2
Scanners are great tools, but sometimes they aren't any help. That's when understanding the system, and how to test it is all you have. Here are some ways to find the problem





2010 Subaru 2.5 Variable Valve Lift Solenoid and Switch Testing
This video is a great review of Section 2 "Switch Inputs" and Section 3 "Transistor drivers and Output Solenoids" in my eBook. On this system the intake valve lift is varied by two different cam lobes. A low lift lobe and a high lift lobe. I misspoke in the video calling this a variable valve timing or VTEC mechanism. This system does not vary cam timing, but it does vary intake valve lift.





Changing Trailblazer Sparkplugs
Changing Trailblazer Sparkplugs





How to diagnose a misfire that isn't ignition related
Get a compression tester on Amazon HERE→http://www.amazon.com/gp/product/B004K2FSXI/ref=as_li_tf_tl?ie=UTF8& camp=211189&creative=373489&creativeASIN=B004K2FSXI&link_code=as3&tag=httpw wwyou00f-20 How to diagnose a misfire that isn't ignition related Hey- wanna see a cool visual of the valves and pistons in motion to help understand what I'm doing here? Check out the link below at time 1:01 (la informacion es en espanol, pero es muey bien!) http://www.youtube.com/watch?v=LVnG10Rpi4M&feature=youtube_gdata_player





Labscope Relative Compression Testing
Sometimes it's very hard to gain access to spark plugs in order to perform a compression test. Here is how to do a relative compression test with a labscope.





How to find a misfire without a scanner 3
Scanners are great tools, but sometimes they aren't any help. That's when understanding the system, and how to test it is all you have. Here are some ways to find the problem




Which car is faster? Which Car is Faster?





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