Cutting out shortly after cold start - Page 2 - ZR-1 Net Registry Forums

Corvette95 · 12-01-2022

I see you are a new member here, so first of all, glad to have you as a member . If you do a search, you may find a VERY long thread I started a couple of years ago, it was a super hard to find issue that sounds like what your are experiencing but I had a Tech1 and TunerCat for data recording. So yadda, yadda, yadda, check the battery cables AND the post connectors first. If you are not 100% sure of your battery's age and condition , have it checked, it needs to be absolutely needs to pass the test without it being just in the "good" range but in the fully ready condition with the proper CCA's, and if your rule out those, and I mean a very thorough check of those items, then, with a fully charged battery, UNPLUG the alternator after it has sat without being key on (an absolutely necessity that it sits for over 12 hours without key being cycled, with the alternator being unplugged, see if you can replicate the dying issue when first started, if you can't duplicate it with alternator unplugged, it is your alternator or (in my case) the alternator pigtail, even it it looks perfect, that was my problem after weeks of diagnostics, data recording and a 6 plus page thread here on the forum. Hope it helps.

http://www.zr1.net/forum/showthread.php?t=32094

XfireZ51 · 12-01-2022

Have u checked cam sensor? It provides signal for injector firing.

Raykahn · 12-01-2022

Quote:

Originally Posted by Corvette95

snip

Good lead, I will take a look through that thread. Still need to get a hold of an OBD1 tester for the moment. Between thanksgiving and hunting in NY for a week I haven't done much with the Z.

For particulars in my case the battery is less than 6 months old, and the car is on a battery tender whenever not in use. My alternator died just a month ago and was replaced, this issue occurred both before and after the new alternator.

@XfireZ51 No I have not.

I'll be getting a bit more into it all here soon. Again I appreciate everybody responding and offering information.

- Zach

12-01-2022	#11
Corvette95 Join Date: Jan 2006 Location: Decatur, AL Posts: 1,140	Cutting out shortly after cold start I see you are a new member here, so first of all, glad to have you as a member . If you do a search, you may find a VERY long thread I started a couple of years ago, it was a super hard to find issue that sounds like what your are experiencing but I had a Tech1 and TunerCat for data recording. So yadda, yadda, yadda, check the battery cables AND the post connectors first. If you are not 100% sure of your battery's age and condition , have it checked, it needs to be absolutely needs to pass the test without it being just in the "good" range but in the fully ready condition with the proper CCA's, and if your rule out those, and I mean a very thorough check of those items, then, with a fully charged battery, UNPLUG the alternator after it has sat without being key on (an absolutely necessity that it sits for over 12 hours without key being cycled, with the alternator being unplugged, see if you can replicate the dying issue when first started, if you can't duplicate it with alternator unplugged, it is your alternator or (in my case) the alternator pigtail, even it it looks perfect, that was my problem after weeks of diagnostics, data recording and a 6 plus page thread here on the forum. Hope it helps. http://www.zr1.net/forum/showthread.php?t=32094 __________________ Corvette95 Registry and Forum (************) 1989 C4 Conv Wht/Gry Auto Hardtop Top Flight SOLD 1995 C4 Coupe Purple/Blk 6 Speed 1989 C4 Conv Wht/Red Auto SOLD 1996 C4 Conv Black/Tan Auto SOLD 1994 C4 Coupe Wht/Blk SOLD 1995 C4 ZR-1 White/Gry #278 Dual Dunn Head SOLD 1986 C4 Coupe Black/Red 4+3 SOLD 1990 C4 ZR-1 Red/Red #0454 Last edited by Corvette95; 12-01-2022 at 05:45 AM.*

12-01-2022	#12
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,686	Re: Cutting out shortly after cold start Have u checked cam sensor? It provides signal for injector firing.