Hi everyone. I had my BGN inspected for an exhaust leak which was fixed but drivability/hesitation issue ensued. I had the Powerlogger installed about 3 days ago. I’ll start with the lead up to the Powerlogger files attached.
May-June 2016 - Exhaust Leak: Exhaust Leak coming from the front. I did notice rough idle until warmed up & periodic stall at stoplight after 15 minutes of driving
July/August 2016 - Hesitation: Significant hesitation when throttle down. Occurred at any speed
May-June 2016 - Exhaust Leak: Exhaust Leak coming from the front. I did notice rough idle until warmed up & periodic stall at stoplight after 15 minutes of driving
- Diagnosis and Resolution:.
- Exhaust leak fixed by resealing manifold and turbo
- Drive test observed hesitation impacted drivability severely
July/August 2016 - Hesitation: Significant hesitation when throttle down. Occurred at any speed
- Completed the following:
- New NTK O2 Sensor 21002
- New SMP Regulator PR3 (due to 80 psi)
- New NGK spark plugs 6630 v-power
- New Map Sensor
- New vacuum lines (replaced all, some were cracked badly)
- Verified working properly: turbo, MAP, IAT sensor, spark strength
- Reset idle speed, TPS
- Improper secondary waveform led to install of new ignition module and coils. Didn’t change the issue. Removed new ignition/coils.
- File 1: 001_2016.08.10_DARKRYD_HESITATE_PARKED_Frame692.dat: starting at Frame 692 there are three quick hesitations. This was recorded while in park with variable throttle
- File 2: 002_2016.08.10_DARKRYD_HESITATE_DRIVING.dat: mechanic took for a quick spin. He said there wasn’t any hesitation/stumble. I looked at the file and didn’t see anything like what he had seen in File 1.
- File 3: 003_2016.08.10_DARKRYD_HESITATE_PARKED.dat: just another recording while in park. I didn’t see anything erratic but maybe someone will see something in the file.