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St. Jude '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15-'16-'17-'18-‘19-'20-'21-'22-'23-'24
OK Boys riddle me this...Start problem
92 ZR starting problem. Won't engage the starter when hot.
Won't engage starter second try if the first cold start attempt fails.
Battery and cables in excellent condition.
New starter.
Can be push started no problem with starting circuits.
Except engaging starter.
92 ZR starting problem. Won't engage the starter when hot.
Won't engage starter second try if the first cold start attempt fails.
Battery and cables in excellent condition.
New starter.
Can be push started no problem with starting circuits.
Except engaging starter.
Helping my friend sort this out...
Its time to do the clutch bypass lots of detail here on the forum and the zr1registry
Not sure if you're describing a mechanical problem or an electrical issue. It sounds like the electrical issue?
This may help:
Couple things:
A new starter may not have the right bendix (thrust pin). I had to reuse my old one when I serviced my starter b/c the new pin forced the starter gear too far, resulting in only a small portion of the starter gear engaging the FW ring gear.
Electrically speaking, the clutch safety switch is prolly the biggest bug-a-boo for no-start on the 90-92 ZR-1s. I'd want to check that first.
Other issues relate to the starter solenoid being bad, but chances are it isn't going to be the case (hopefully), being that it is new.
Anyway, check the clutch switch and bypass it if need be until a new one can be found.
I have an intermittent issue. Happens cold or hot. Doesn't appear to have a rhyme or reason. Turn key, starter works BUT IT ZINGS as if there's a missing tooth on the FW. Turn off, then turn key, it starts. Sometimes it'll zing a couple of times. I rock the car a bit. It'll start.
Clutch bypass: DONE, and just this past winter I put in new contacts in starter from rebuild kit.
Very intermittent.
I have an intermittent issue. Happens cold or hot. Doesn't appear to have a rhyme or reason. Turn key, starter works BUT IT ZINGS as if there's a missing tooth on the FW. Turn off, then turn key, it starts. Sometimes it'll zing a couple of times. I rock the car a bit. It'll start.
Clutch bypass: DONE, and just this past winter I put in new contacts in starter from rebuild kit.
Very intermittent.
Your current issue -
Actually sounds as if it might need a spring for the pinion. I believe you can buy the spring, lock and snap ring less the pinion. Some 'denso pinion kits come with the small parts.
I have an intermittent issue. Happens cold or hot. Doesn't appear to have a rhyme or reason. Turn key, starter works BUT IT ZINGS as if there's a missing tooth on the FW. Turn off, then turn key, it starts. Sometimes it'll zing a couple of times. I rock the car a bit. It'll start.
Clutch bypass: DONE, and just this past winter I put in new contacts in starter from rebuild kit.
Very intermittent.
OR, it could be the rebuild kit!
The thrust pin in the Denso kit I got off of Ebay was too long by over half the width of the ring gear. If I had installed it, the starter gear would have been pushed out too far, resulting in only about 1/3 of either gear surface being engaged when starting.
I ended up reusing my stock thrust pin = works fine for 31k miles now. Of course, it could always be a bad bendix. If the problem didn't start until the new kit was installed - that could be the problem. And, you might be able to salvage the old mechanical hardware. (Let's hope you still have all your teeth...and I don't mean the ones in your mouth!!)
The thrust pin in the Denso kit I got off of Ebay was too long by over half the width of the ring gear. If I had installed it, the starter gear would have been pushed out too far, resulting in only about 1/3 of either gear surface being engaged when starting.
I ended up reusing my stock thrust pin = works fine for 31k miles now. Of course, it could always be a bad bendix. If the problem didn't start until the new kit was installed - that could be the problem. And, you might be able to salvage the old mechanical hardware. (Let's hope you still have all your teeth...and I don't mean the ones in your mouth!!)
Paul,
I noted that the thrust pin in the kit was longer and so used the older one after "brushing off" some of the carbon on the disk. The contacts and gaskets are new. However, I did this minor overhaul exactly for the reason of eliminating the issue. So it was happening previously, although it is now happening much more infrequently than before the update. So whatever is causing it has not been completely fixed.
I noted that the thrust pin in the kit was longer and so used the older one after "brushing off" some of the carbon on the disk. The contacts and gaskets are new. However, I did this minor overhaul exactly for the reason of eliminating the issue. So it was happening previously, although it is now happening much more infrequently than before the update. So whatever is causing it has not been completely fixed.
I've never done more to a 'denso starter than plunger and contacts so I was trying to sort a more detailed parts exploded view of the 'denso. It seems that MAYBE you actually have a clutch drive problem which looks easy enough to diagnose once the starter is in hand. It seems an easy enough replacement and you do a "once over" on the entire motor and maybe do brushes etc. while there. Doesn't seem to be any specialty tools and parts I'd think "local" in a shop. A reason for an Internet purchase? Maybe but I'd doubt it.
St. Jude '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13-'14-'15-'16-'17-'18-‘19-'20-'21-'22-'23-'24
Figured to close this thread.
One of my best Corvette buddies owns that Red beauty and it is a freeking monster!
So much fun to drive and sounds like no other Corvette I've ever heard.
The problem ended up to be the F**king clutch pedal start switch.
Pulled the connector and jumped the pins.
Starts every time now.
Figured to close this thread.
One of my best Corvette buddies owns that Red beauty and it is a freeking monster!
So much fun to drive and sounds like no other Corvette I've ever heard.
The problem ended up to be the F**king clutch pedal start switch.
Pulled the connector and jumped the pins.
Starts every time now.
07-11-2016, 02:19 AM
OK Boys riddle me this...Start problem
