Hesitation and idle problems from a bad TPS (OBD1 Eclipse)

For those of you with my eBook. Refer to Section 7 "Potentiometers" for more on what I am doing in this video. Also covered is how to retrieve trouble codes without a scan tool on an early model Mitsubishi Eclipse or Eagle Talon For more information on this topic, I have written a “field manual” called Engine Performance Diagnostics which is available at www.scannerdanner.com as an eBook or paper book. Want even more diagnostic training? Whether you are a DIY trying to fix your own car, someone looking to become an auto technician, or a current auto technician that wants to get more into diagnostics, subscribe to ScannerDanner Premium right here on YouTube. There is a 14 day free trial. On ScannerDanner Premium I will bring you right into my classroom at Rosedale Technical College. You will find page for page lectures taken right from my book as well as exclusive classroom type case studies. What is so special about these classroom case studies? I pull live problem vehicles directly into my classroom and we troubleshoot them in real time, using and applying the theory and testing procedures we learn during the classroom lectures. There is no better on-line training of how to troubleshoot automotive electrical and electronics systems anywhere!

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Battery keeps going dead (what to test before replacing)
In this video I will show you the tests you need to perform on a car with a dead battery. The three main things we must determine: 1. Does the battery need to be replaced? 2. Is the alternator charging correctly? 3. Is there a parasitic drain on the system with the ignition off? When you have a car that is only driven once a month combined with a cold climate, special attention must be made to the battery drain test. (parasitic drain). Symptoms - battery keeps going dead (1 year old battery) Fix - replace battery Tests shown - how to test a charging system - how to be sure the alternator diodes are okay - how to test a battery - how to test for a parasitic drain (battery drain) - what is the acceptable current flow from a battery with the ignition off Tools used - graphing multimeter (digital multimeter may be used) - jump pack (battery jump starter) Playlist - Starting, Charging and Battery system problems https://www.youtube.com/playlist?list=PLAFYVCyenqcpZM-kQg5MUX0OvrIPSirz5 Related videos - How to locate a battery drain (parasitic drain test) Part 1 https://youtu.be/h06xb6SC7Yc - How to locate a battery drain (parasitic drain test) Part 2 https://youtu.be/dgvIicgZRcQ - Bad Alternator Diode causing transmission/speedometer problems https://youtu.be/MGaHaIXZioA - Parasitic Drain Tests (SD Premium videos) https://youtu.be/ib3BKOjibnI https://youtu.be/d1oPWs5F8vI https://youtu.be/MQnlokBYxAs For more information on this topic, I have written a “field manual” called Engine Performance Diagnostics which is available at www.scannerdanner.com as an eBook or paper book. Want even more diagnostic training? Whether you are a DIY trying to fix your own car, someone looking to become an auto technician, or a current auto technician that wants to get more into diagnostics, subscribe to ScannerDanner Premium right here on YouTube. There is a 14 day free trial. On ScannerDanner Premium I will bring you right into my classroom at Rosedale Technical College. You will find page for page lectures taken right from my book as well as exclusive classroom type case studies. What is so special about these classroom case studies? I pull live problem vehicles directly into my classroom and we troubleshoot them in real time, using and applying the theory and testing procedures we learn during the classroom lectures. There is no better on-line training of how to troubleshoot automotive electrical and electronics systems anywhere!





Causes of lean condition trouble codes P0171, P0174 - GM 5 3L
The vehicle being worked on is a 2004 Chevy Suburban with a 5.3L engine. It had multiple trouble codes in memory P0171 and P0174 (fuel system too lean bank 1 and 2) a P0101 (MAF circuit out of range) and a P0300 (engine misfire detected). All of these were related to one single problem. Engine Performance Diagnostics chapter 1 pages 4-12 Symptoms - rough idle, especially cold - check engine light (P0171, P0174, P0101, P0300) - poor gas mileage - hesitation on acceleration - runs much better with engine warm Fix - replace intake manifold gasket Tests shown - how to use freeze frame data to determine type of lean condition - how to interpret fuel trim data - how to locate a vacuum leak with water - how to smoke test and intake manifold - how to know what trouble codes to fix first Tools used - scan tool - smoke machine - water bottle Playlist - (Chapters 4 and 5) Fuel Trim and Oxygen Sensor Testing https://www.youtube.com/playlist?list=PLD2809EEC7BAAF989 Related videos - Understanding Short Term and Long Term Fuel Trim (an SD Premium video) https://youtu.be/oRX2V6_a3dc - How to find a vacuum leak with water https://youtu.be/cuod8-zFSQ4 - Misfire caused by a vacuum leak https://youtu.be/OH_U3D4S5Q4 - Ford F-150 P0171 P0174 Trouble Codes - vacuum leak (water test) https://youtu.be/K-on2hbYUCc - Idle Speed Problems P0507 caused by a vacuum leak https://youtu.be/tJgrHkuqcC8 For more information on this topic, I have written a “field manual” called Engine Performance Diagnostics which is available at www.scannerdanner.com as an eBook or paper book. Want even more diagnostic training? Whether you are a DIY trying to fix your own car, someone looking to become an auto technician, or a current auto technician that wants to get more into diagnostics, subscribe to ScannerDanner Premium right here on YouTube. There is a 14 day free trial. On ScannerDanner Premium I will bring you right into my classroom at Rosedale Technical College. You will find page for page lectures taken right from my book as well as exclusive classroom type case studies. What is so special about these classroom case studies? I pull live problem vehicles directly into my classroom and we troubleshoot them in real time, using and applying the theory and testing procedures we learn during the classroom lectures. There is no better on-line training of how to troubleshoot automotive electrical and electronics systems anywhere!





How to test a computer ground circuit (Audi)
Intermitttent no start problems from a bad computer ground. 2000 Audi S4 Quattro 2.7 turbo. The procedures shown in this video apply to ALL make and model cars. When you understand circuit designs like the 5v reference and sensor ground paths, these types of problems are very easy to identify. The problem on this Audi was revealed within the main sensor circuits (MAP and TPS etc) and was quickly narrowed down to a sensor ground problem. Symptoms: - random stalling problems - intermittent no start - clicking noises under the hood when not starting - no communication with scan tool - throttle body motor clicking rapidly Fix: - tightened loose computer ground eyelet located on the firewall Test procedures shown: - electronic throttle body tests - throttle position sensor signal tests with a scope - MAP sensor signal circuit - sensor ground circuit - computer ground circuit - how to quickly identify a ground circuit problem - what is the difference between a sensor ground and computer ground - how to check main computer grounds Tools used: - scan tool - labscope - Digital multimeter (can be used instead of a scope) Related videos: - Poor running, flashing CEL, no codes (bad computer ground) https://youtu.be/44dP6X3QS5A - Low Fuel Pressure from a bad fuel pump ground https://youtu.be/rQ7tvIxQSt0 - MAF sensor trouble code (P0102) caused by a bad ground https://youtu.be/bJRLZnjS6ms - Engine does not crank (bad block ground) https://youtu.be/32S0WMj3GSQ - How to test a starter motor (No Crank Testing) bad ground https://youtu.be/ytrcqM8wyW0 - Fuel Pump Relay Problem https://youtu.be/CEjmo_qT4yQ For more information on this topic, I have written a “field manual” called Engine Performance Diagnostics which is available at www.scannerdanner.com as an eBook or paper book. Want even more diagnostic training? Whether you are a DIY trying to fix your own car, someone looking to become an auto technician, or a current auto technician that wants to get more into diagnostics, subscribe to ScannerDanner Premium right here on YouTube. There is a 14 day free trial. On ScannerDanner Premium I will bring you right into my classroom at Rosedale Technical College. You will find page for page lectures taken right from my book as well as exclusive classroom type case studies. What is so special about these classroom case studies? I pull live problem vehicles directly into my classroom and we troubleshoot them in real time, using and applying the theory and testing procedures we learn during the classroom lectures. There is no better on-line training of how to troubleshoot automotive electrical and electronics systems anywhere! Playlist: ground circuit problems https://www.youtube.com/playlist?list=PLAFYVCyenqcr32wgsCqa1Zj4335YlBF5p





Tps sensor mitsubishi
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