Problem o' the day... - ZR-1 Net Registry Forums

KILLSHOTS · 08-09-2014

I decided to smokescreen the neighborhood today and took the car out for a drive. I started noticing a slight stumble at low RPM, so subtle that I thought I might have been imagining it. But it got progressively worse. Then, I turned it off for 5 minutes and when I restarted it, it idled up to about 2K and hung there, idling somewhat roughly. A stab at the gas did not reduce the idle. On the way home it continued to stumble badly at low RPM, and felt fine when I nailed it. I was hoping the MAP hose came off but no dice. All vacuum lines are intact, no changes there, it does not seem to me like a vacuum issue. I have not filled up recently so it's not bad gas. The plugs, coils, injectors and fuel filters have all been changed.

Any ideas?

TIA!

08-09-2014	#1
KILLSHOTS Join Date: Feb 2014 Location: AZ Posts: 857	Problem o' the day... I decided to smokescreen the neighborhood today and took the car out for a drive. I started noticing a slight stumble at low RPM, so subtle that I thought I might have been imagining it. But it got progressively worse. Then, I turned it off for 5 minutes and when I restarted it, it idled up to about 2K and hung there, idling somewhat roughly. A stab at the gas did not reduce the idle. On the way home it continued to stumble badly at low RPM, and felt fine when I nailed it. I was hoping the MAP hose came off but no dice. All vacuum lines are intact, no changes there, it does not seem to me like a vacuum issue. I have not filled up recently so it's not bad gas. The plugs, coils, injectors and fuel filters have all been changed. Any ideas? TIA!