My 911 still feels like S***
10-14-2021, 08:23 PM
#17
Rennlist Member
Check the misfire logs. I had a cylinder that was misfiring, it felt like a stumble when it happened. Car only has 15k miles but plugs were overdue on time. Replaced all coils/plugs no more misfires or stumble.
10-15-2021, 12:04 AM
#18
Stop the second guessing, there isn't anyone here that knows exactly what is going on with you car. Find yourself a good Indy that will do a live data log on a test drive. A Porsche dealer can do the same for you.
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polobai (10-15-2021)
10-15-2021, 08:52 AM
#20
Burning Brakes
The more I think about this, at that mileage level, you might as well do a mini-overhaul. Feel free to skip anything in this list where you know it's been done since you've owned it.
I'm at 59,000 km / 37,000 miles and I'm still working through some of these items even at this lower mileage trying to sort out my own driveability issues.
- Spark plugs
- Coil packs
- Variocam solenoids (they're in the same location as the spark plugs, might as well change them while you're in there)
- Serpentine belt
- Throttle body assembly
- MAF sensor
- Transmission fluid (if they didn't change it when your new clutch was put in)
- Brake fluid, if it hasn't been done in the last 2 years/when your front brakes were replaced
I'm at 59,000 km / 37,000 miles and I'm still working through some of these items even at this lower mileage trying to sort out my own driveability issues.
+1 Variocam Servos!
I believe that in an effort to claim overall low maintenance requirements that Porsche intentionally omitted this part from routine maintenance.
Mileage is about right for both to be replaced.
10-15-2021, 11:58 AM
#21
Three Wheelin'
https://rennlist.com/forums/991/1141...place-diy.html
10-15-2021, 12:06 PM
#22
RL Community Team
Rennlist Member
Rennlist Member
Maybe I didn't use the right name for it, but whatever this thing is in this DIY:
https://rennlist.com/forums/991/1141...place-diy.html
https://rennlist.com/forums/991/1141...place-diy.html
Same function, different method.
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koala (10-15-2021)
10-15-2021, 12:10 PM
#23
Three Wheelin'
10-15-2021, 03:00 PM
#24
Rennlist Member
I didn't mean to come across snarky with the MAF vs MAP comment.
MAP sensors don't seem to "wear" like MAF wires sensors. If it fails/blocks it will throw a code. However, while in there it can't hurt to make sure the tube to the element is unobstructed. I've seen it happen once on an older Land Rover that had lots of blow by, causing oil grime build up in the intake manifold, which obstructed the port.
MAP sensors don't seem to "wear" like MAF wires sensors. If it fails/blocks it will throw a code. However, while in there it can't hurt to make sure the tube to the element is unobstructed. I've seen it happen once on an older Land Rover that had lots of blow by, causing oil grime build up in the intake manifold, which obstructed the port.
Last edited by AdamSanta85; 10-15-2021 at 03:01 PM.
10-15-2021, 03:35 PM
#25
Three Wheelin'
No worries Adam, I know you didn't mean any offense by your comment 
I'll inspect that sensor while I'm in there replacing my throttle body next week
I'll inspect that sensor while I'm in there replacing my throttle body next week
10-17-2021, 04:16 PM
#26
Maybe you'll find some answers here....most of the time this issue has showed up earlier in a car's life.
https://rennlist.com/forums/991/9061...ble-issue.html
https://rennlist.com/forums/991/9061...ble-issue.html