Scotty is like click/clack. They talk about repairs. And why you should buy a 1998 Toyota.
I got some live stream data while the car was running:
At 2k rpm:
- O2 sensor output voltage-B1S2 = 0.095 - Low?
- O2 sensor output voltage-B1S1 = 0.210 (replaced in 2016)
- Ignition timing advance for #1 cylinder= 33.5 BTDC - high?
At 800 rpm:
- O2 sensor output voltage-B1S2 = 0.015 - Low?
- O2 sensor output voltage-B1S1 = 0.115 (replaced in 2016)
- Ignition timing advance for #1 cylinder= 15 BTDC
manifold absolute pressure sensor = 4.64
When I drive, the downstream O2 sensor fluctuate between 0.02 - 0.88 volts!
Anything obvious?
Just a possibility. You may be running a bit on the lean side (caused by an O2 or intake sensor or even a small vacuum leak) or higher than normal combustion chamber temperatures (caused by aggressive timing, cylinder head/piston buildup, incorrect AFR). Or you could just have a bad CAT like just about everyone has said.
Spot on. So:
- O2 sensor
- vacuum leak or leak on exhaust
- higher than normal combustion chamber temperatures (caused by aggressive timing, cylinder head/piston buildup, incorrect AFR).
I just completed:
- above by following the process below - disconnected the PCV and O2 voltage stopped fluctuating and fell below 0.1 volt - I didnāt bother checking for Rich condition given its NTK part that was replaced in 2016
https://dannysengineportal.com/o2-oxygen-sensor-function-failure-symptoms-testing - I need to test - but the car idles fine. Also hole in the exhaust could also cause this
- Unlikely since no mods were done to the car.
Also cleaned the MAP sensor.
I found a bad PCV valve - its only 2 yrs old! Replaced it.
Me neither. Heās shadow banned myself (and Iām certain hundreds others) from commenting on his videos. If youāve ever take a look a comment section on his videos itās comprised of roughly 99% of people who donāt know any better, singing his praises. If you post something criticizing him, and Iām not saying youāre running him down like youāre channeling a mid-80ās Ric Flair promo, but more like āScotty is incorrect here and hereās objective proof as to why I say thatā¦ā Heāll shadow-ban you at the drop of a hat. I think the guy knows he gets alot wrong and contradicts himself often., but doesnāt want to let his less-informed fan base in on it.