hello all, looking for suggestions at this point
2007 camry ce 2.4l auto trans 178k miles
if i hit the trottle quickly from a dead stop, most times i get a significant hesitation and a lean spike (18-20 afr although i think it might peg at 20). doesn't really happen or less noticable if i ease into it more and accelerate more slowly. it really seems to happen most with quick tip in. revs fine, has decent acceleration once moving. afr is ok through the rpm range under acceleration.
new (within past couple weeks) injectors, plugs, mass air sensor, oxygen sensor, air filter
relatively new coils (2 years), pcv, new fuel pump/regulator/damper/strainer within last year
checked fuel pressure, still good (either 50 or 60 psi, can't remember)
cleaned throttle body last week, checked for vacuum leaks by spraying carb cleaner round hoses and checked things visually for leaks
did some scanning using an obd2 adapter and iphone and car scanner elm obd2 app
as mentioned above, lean spike when hit the throttle quickly from dead stop (most times)
most parameters look within reason (maf 3 g/s at idle, and 14.7 ish air fuel ratio)
throttle and pedal position sensors look pretty responsive and follow each other closely.
i'm at a loss for what to look for at this point... throttle body? knock sensor? cam vvt actuator / sprocket? timing chain?
any thoughs or help is appreciated
*edited to add new air filter and fuel strainer
2007 camry ce 2.4l auto trans 178k miles
if i hit the trottle quickly from a dead stop, most times i get a significant hesitation and a lean spike (18-20 afr although i think it might peg at 20). doesn't really happen or less noticable if i ease into it more and accelerate more slowly. it really seems to happen most with quick tip in. revs fine, has decent acceleration once moving. afr is ok through the rpm range under acceleration.
new (within past couple weeks) injectors, plugs, mass air sensor, oxygen sensor, air filter
relatively new coils (2 years), pcv, new fuel pump/regulator/damper/strainer within last year
checked fuel pressure, still good (either 50 or 60 psi, can't remember)
cleaned throttle body last week, checked for vacuum leaks by spraying carb cleaner round hoses and checked things visually for leaks
did some scanning using an obd2 adapter and iphone and car scanner elm obd2 app
as mentioned above, lean spike when hit the throttle quickly from dead stop (most times)
most parameters look within reason (maf 3 g/s at idle, and 14.7 ish air fuel ratio)
throttle and pedal position sensors look pretty responsive and follow each other closely.
i'm at a loss for what to look for at this point... throttle body? knock sensor? cam vvt actuator / sprocket? timing chain?
any thoughs or help is appreciated
*edited to add new air filter and fuel strainer
