{youtube}9TlygJMxTps|615|345|0{/youtube}
2003 Impala 3400 V-6.
How to perform an exhaust back-pressure test.
Engine Performance Diagnostics chapter 1 pages 8 & 28
- very low power (could not accelerate past 30 mph)
- pinging and detonation
- replace the restricted catalytic converter
- O2 sensor reading at wide open throttle (shows fuel delivery and direction for our low power complaint)
- exhaust backpressure test using a gauge installed in the upstream O2 port
- scan tool
- exhaust back-pressure gauge
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Related videos:
How to test for a restricted exhaust using the DPFE sensor on a Ford:
{youtube}JIU8j4YBZxw|0{/youtube}
How to test for a plugged exhaust (picoscope & psi transducer):
{youtube}kO91s0CoM_4|615|345|0{/youtube}
Exhaust Backpressure Testing (known bad compared to known good):
{youtube}Lafv2c4szZY|615|345|0{/youtube}
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For more information on this topic, I have written a “field manual” called Engine Performance Diagnostics which is available as an eBook or paper book.
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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!