Finally drove the Z.. But have issues>> - Page 3 - ZR-1 Net Registry Forums

-=Jeff=- · 05-17-2008

the Z drives GREAT when it wants.. I filled it with coolant today (using my current hoses until I get the others to install)

so I was driving around town, thent he car stumbled, back fired (pop) and died. It started right up running like crap.. I got it home (not too far) shut it off, popped hood and ooked aroufn for vacuum lines off etc.. nothing, started it up, runs fine..

I got my scan tool out and hooked it up. seemed fine.. then when it stumbled again I noticed something.. Left BLM was aroud 132, Right BLM was at 160.. I then noticed the right O2 was solid at 0v.. it would go to .45 with slight throttle but the Right injector pulse width was at like 10-12ms when the left was 4. then like magic, it cleared up and all was fine..

Looking over the whole scan, the Left and Right BLM, Injector pulse width, and O2 voltage track almost perfectly, but those few instances it get skewed.. now I guess there is a possibily of a sticking injector, but to stick then not stick? my other thought is a bad Passenger side O2? maybe intermittent?

Anyone one else have suggestions? Oh yeah, not DTC set..

05-17-2008	#1
-=Jeff=- Join Date: Jul 2007 Location: Bartlett, IL Posts: 7,136	Finally drove the Z.. But have issues>> the Z drives GREAT when it wants.. I filled it with coolant today (using my current hoses until I get the others to install) so I was driving around town, thent he car stumbled, back fired (pop) and died. It started right up running like crap.. I got it home (not too far) shut it off, popped hood and ooked aroufn for vacuum lines off etc.. nothing, started it up, runs fine.. I got my scan tool out and hooked it up. seemed fine.. then when it stumbled again I noticed something.. Left BLM was aroud 132, Right BLM was at 160.. I then noticed the right O2 was solid at 0v.. it would go to .45 with slight throttle but the Right injector pulse width was at like 10-12ms when the left was 4. then like magic, it cleared up and all was fine.. Looking over the whole scan, the Left and Right BLM, Injector pulse width, and O2 voltage track almost perfectly, but those few instances it get skewed.. now I guess there is a possibily of a sticking injector, but to stick then not stick? my other thought is a bad Passenger side O2? maybe intermittent? Anyone one else have suggestions? Oh yeah, not DTC set.. __________________ 1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - 3" Magnaflow Bullet cats - LT4 Catback Late Model IH - Plenum Coilovers - 4.10s Custom Interior NCM Lifetime Member #978