Intermittent hesitation at light throttle - ZR-1 Net Registry Forums

tiegsd · 08-18-2019

It feels like I'm bouncing my foot lightly on the throttle, but I'm actually holding it steady. Then after 30 sec or so it'll stop and the service engine light will come on at the same time. Everything is fine when the service engine light is on. After a minute or two the svc eng light will go out, then the intermittent hesitation may or may not come back. When it does, it's the same process.

Anyone seen this before? Injectors are new, only 1 year old. Seems to be fine when I open the throttle more. Thought at first dead spot on throttle position sensor, but then it's smooth with the svc eng light on?

Doesn't keep me from driving the car, just a minor annoyance at the moment. Would like to track it down before it's not minor anymore though.

Any input appreciated.

Sent from my SM-N920V using ZR-1 Net Registry mobile app

08-18-2019	#1
tiegsd Join Date: Jul 2017 Location: West Chester, PA Posts: 380	Intermittent hesitation at light throttle It feels like I'm bouncing my foot lightly on the throttle, but I'm actually holding it steady. Then after 30 sec or so it'll stop and the service engine light will come on at the same time. Everything is fine when the service engine light is on. After a minute or two the svc eng light will go out, then the intermittent hesitation may or may not come back. When it does, it's the same process. Anyone seen this before? Injectors are new, only 1 year old. Seems to be fine when I open the throttle more. Thought at first dead spot on throttle position sensor, but then it's smooth with the svc eng light on? Doesn't keep me from driving the car, just a minor annoyance at the moment. Would like to track it down before it's not minor anymore though. Any input appreciated. Sent from my SM-N920V using ZR-1 Net Registry mobile app __________________ 1990 Black/Black ZR-1 #1155 1993 White/Red coupe (Regrettably sold)