Dilemma - ZR-1 Net Registry Forums

Brillo1990 · 03-17-2011

Well the temps were really nice for once here so I decided to take the car for a short spin last night but had a problem. I started it up and there was the normal squeaking from the belt or the idler (have to fix that problem) so I took it out on the highway to warm it up good, it ran fine. I stopped at home after the squeaking stopped and upon restarting it, it was like the engine was missing on 2 cylinders. Now at first I was thinking the injectors were acting up but when I changed the power key to normal then back a couple times nothing changed at all there even while driving kicking in the secondaries so I parked it again.

Upon starting it again it still missed so I headed to the garage to park it for the night to check it later. On the way there I switched the key back and forth just for the hell of it and about 2 blocks from the garage it came out of it and ran fine.

Now after thinking about it I'm thinking it dropped a coil pack for a short time when it got warm maybe and came out of it, is this possible? I had the coil go bad on my pickup once and it just shut down when it got hot, then ran fine after it cooled off. Since there are 4 coil packs on the ZR-1 it may be possible? I'm thinking I should just pull the plenum now and replace the injectors, coil packs and maybe wires now before it gets any nicer out. Any ideas?

As an afterthought last week while some spirited on ramp entry

I did have 2 quick lurches while at half throttle or so but it ran fine for the next 60 miles until I got home. This IS the warmest weather the car has seen since I bought it in January BTW.

03-17-2011	#1
Brillo1990 Join Date: Jan 2011 Location: Eastern Iowa Posts: 113	Dilemma Well the temps were really nice for once here so I decided to take the car for a short spin last night but had a problem. I started it up and there was the normal squeaking from the belt or the idler (have to fix that problem) so I took it out on the highway to warm it up good, it ran fine. I stopped at home after the squeaking stopped and upon restarting it, it was like the engine was missing on 2 cylinders. Now at first I was thinking the injectors were acting up but when I changed the power key to normal then back a couple times nothing changed at all there even while driving kicking in the secondaries so I parked it again. Upon starting it again it still missed so I headed to the garage to park it for the night to check it later. On the way there I switched the key back and forth just for the hell of it and about 2 blocks from the garage it came out of it and ran fine. Now after thinking about it I'm thinking it dropped a coil pack for a short time when it got warm maybe and came out of it, is this possible? I had the coil go bad on my pickup once and it just shut down when it got hot, then ran fine after it cooled off. Since there are 4 coil packs on the ZR-1 it may be possible? I'm thinking I should just pull the plenum now and replace the injectors, coil packs and maybe wires now before it gets any nicer out. Any ideas? As an afterthought last week while some spirited on ramp entry I did have 2 quick lurches while at half throttle or so but it ran fine for the next 60 miles until I got home. This IS the warmest weather the car has seen since I bought it in January BTW.