Please help a newbie!!
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Junior Member
Joined: Sep 2022
Posts: 1
Please help a newbie!!
2012 Jetta 2.5.
Intermittent problem: Stalls without warning. No Check Engine light and no codes.
Constant: Seems low on power. I am unable to get it to rev above 4000 RPM. Accelerator to floor results in RPM rhythmically varying between 3900 and 4000 RPM.
I checked fuel rail pressure - approximately 55-60 PSI (Got high pressure instantly) - no significant change with RPM change. Noid test on all injectors good - all injectors get impulse to open.
Battery and Alternator both new.
When looking at the live data, I noticed a huge variance in the timing advance for cyl #1 ranging from -3 all the way to +30 degrees? I don't know what to think of this but it certainly seems weird to me.
I'm hoping it isn't the Cat - since I'm in Commiefornia....
I don't want to pour a lot of money into this car, but I would like to figure this out.
I would greatly appreciate any ideas either for diagnostics or repair....
Intermittent problem: Stalls without warning. No Check Engine light and no codes.
Constant: Seems low on power. I am unable to get it to rev above 4000 RPM. Accelerator to floor results in RPM rhythmically varying between 3900 and 4000 RPM.
I checked fuel rail pressure - approximately 55-60 PSI (Got high pressure instantly) - no significant change with RPM change. Noid test on all injectors good - all injectors get impulse to open.
Battery and Alternator both new.
When looking at the live data, I noticed a huge variance in the timing advance for cyl #1 ranging from -3 all the way to +30 degrees? I don't know what to think of this but it certainly seems weird to me.
I'm hoping it isn't the Cat - since I'm in Commiefornia....
I don't want to pour a lot of money into this car, but I would like to figure this out.
I would greatly appreciate any ideas either for diagnostics or repair....
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