GT86 lags/shakes at idle and at highway
 

Hello guys
I went to a dealership last week to get the 10 years service with plugs.
They also told there is a leakage at transmission and the front cover. I never noticed anything.

I noticed after the dealership that when i park my car it lags when the temp is at idle. The rpms flucate minimal and then my car shakes. I also noticed when i drive on the highway the rpms flucate sometime and the car lags. It feels like it is going to stall. These problems only occur when the car is at idle temperature. When i start the car in the morning and drive around nothing happens.

I have automatic transmission. And my car is 105k km.

I measured the oil today and i found put it is overfilled. See image: https://imgur.com/a/QyHE31D

Could this excess amout of oil be the reason for this problem ?
Anyone have an idea ?
Thank you for help.

hard to tell with no datalog of it
did you scan dtc? maybe it s misfiring

Yes, correct the oil level

That is a terrible image for us to read. The dipstick is upside down (did the oil run "up?") We can't see how far the oil level is above the full-mark. If it isn't drastically overfilled, then no, it isn't the cause.

Try resetting your ECU first.

• Unplug the negative battery cable for 20 minutes.
• Plug it back in and turn on the car without touching the gas pedal.
• Let it idle for 2 minutes.
• Turn the car off.
• Restart and check the idle after it warms up.

Good luck!

Car lags perhaps because the dealership unhooked the battery and the computer reset?



Also flip the dipstick over and check both sides. Read the side that reads lowest.