996 Hesitation between 1600-2200 RPM
12-04-2019, 10:33 AM
#31
Mmmm difficult one ... based on your experience I I would then keep looking at the engine side for finding a cause. A log of multiple variables from the ECU could shed some light on it. It will require a durametric.
log misfire counters and see if any appears and on which cilinder, when the stumble occurs.
log misfire counters and see if any appears and on which cilinder, when the stumble occurs.
12-04-2019, 01:51 PM
#32
Rennlist Member
12-10-2019, 11:40 AM
#33
Mmmm difficult one ... based on your experience I I would then keep looking at the engine side for finding a cause. A log of multiple variables from the ECU could shed some light on it. It will require a durametric.
log misfire counters and see if any appears and on which cilinder, when the stumble occurs.
log misfire counters and see if any appears and on which cilinder, when the stumble occurs.
My mechanic told me that in terms of diagnostics and engine everything looks great. Porsche Authorized Senior Diagnostic Mechanic.
Is this phenomenon recognized and can it be resolved as a result of TIPTRONIC oil replacement?
Could this be related to spark plugs?
(As far as I know my spark plugs went 40,000KM and replaced 4 years ago, non-original NGK spark plug and no BOSCH).
Could it be related to MAF. I cleaned up my MAF and nothing changed. I realized that MAF also does not "throw" a fault and sometimes just replace it.
I have to solve it. It really hurts my pleasure.
12-10-2019, 12:10 PM
#34
Cleaning a MAF is not always a solution, and most of the times only a temporary.
Check the Hot Film Voltage with ignition on. Any value outside the 0,95-1.05V range I would consider the MAF as ready for replacement.
Don’t forget it is one of the most important sensors in the car.
it wears out and needs replaced so now and then. My previous MAF sensor lasted 30-35k miles.
if you have no records of when it was last replaced I would advise to buy a new one.
Check the Hot Film Voltage with ignition on. Any value outside the 0,95-1.05V range I would consider the MAF as ready for replacement.
Don’t forget it is one of the most important sensors in the car.
it wears out and needs replaced so now and then. My previous MAF sensor lasted 30-35k miles.
if you have no records of when it was last replaced I would advise to buy a new one.
12-10-2019, 12:22 PM
#35
Cleaning a MAF is not always a solution, and most of the times only a temporary.
Check the Hot Film Voltage with ignition on. Any value outside the 0,95-1.05V range I would consider the MAF as ready for replacement.
Don’t forget it is one of the most important sensors in the car.
it wears out and needs replaced so now and then. My previous MAF sensor lasted 30-35k miles.
if you have no records of when it was last replaced I would advise to buy a new one.
Check the Hot Film Voltage with ignition on. Any value outside the 0,95-1.05V range I would consider the MAF as ready for replacement.
Don’t forget it is one of the most important sensors in the car.
it wears out and needs replaced so now and then. My previous MAF sensor lasted 30-35k miles.
if you have no records of when it was last replaced I would advise to buy a new one.
To my knowledge, it has never been replaced.
Buy Bosch OEM Replacements Right? The original is the same as one Bosch one right?
