View Single Post
Old 01-27-2021   #8
jss06c6
 
Join Date: Aug 2015
Location: Magnolia, Texas
Posts: 884
Default Re: Weird stuttering issue

Quote:
Originally Posted by Mikey View Post
Ok I have to shamefully admit I have not made time to further diagnose yet but do have some new findings to share.

Had not driven it since this started 2 weeks ago. Just needed to pull it out of garage today to move some things around. Decided I would let it idle for a bit. But after first pulling it out and while engine was still cold I decided to stab the throttle while out of gear. Engine cutout at 3400rpm like a rev limiter. So then I applied light throttle and as the rpm's increased, at 3400 the engine acted again like a soft rev limiter and with light throttle still the engine "hunted" between 3400 and 3100. It would go up and down in a sinusoidal kind of way.

I let the car idle for a bit until water temp was 85C and tried again - this time no issues and no rev limiter symptoms.

Do any aftermarket tuners enable a soft limiter until the car is warmed up?
Full power is not engaged until car is warmed up and in closed loop.

Sent from my SM-G950U using ZR-1 Net Registry mobile app
jss06c6 is offline   Reply With Quote