Forum: C4 ZR-1 General Postings
3 Days Ago
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Replies: 6
Views: 322
Re: WAZOO Maintenance Day
Darn, wish I were closer. I have a ZF Doc short shifter to install and I don't really want to do it alone. Sadly, I'm 2702 miles away.
Crabs
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Forum: C4 ZR-1 General Postings
06-25-2024
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Replies: 4
Views: 2,069
Re: Totaled cars
There used to be an Excel spreadsheet of totalled Z's on the Registry's information page.
Taken down some time ago. Not sure why.
I have a copy somehwere, but it hasn't been updated for many years....
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Forum: C4 ZR-1 General Postings
06-22-2024
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Replies: 5
Views: 3,201
Re: First 1990 ZR-1 Vin runs
Ive read that 84 1989 model year pilot ZR-1's were produced for display and testing.
They are easily discernable because of their wheels having center cover caps and hard pipe plumbing of the PVC...
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Forum: C4 ZR-1 General Postings
06-20-2024
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Replies: 6
Views: 3,907
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Forum: C4 ZR-1 General Postings
05-15-2024
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Replies: 32
Views: 6,203
Re: ZR1 Detectives
Post up the Vin#.
If anyone has any info on this particular car they will share it.
Tell us more where this car is for sale and what makes it "sketchy".
Crabs
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Forum: C4 ZR-1 Technical Postings
05-14-2024
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Replies: 10
Views: 7,099
Re: High idle
My '90 does something similar, but not as extreme.
Approaching a stop the idle is around 1400rpm, once stopped for a few seconds the idle drops to 800ish.
Ive always believed it was smog related...
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Forum: C4 ZR-1 Technical Postings
04-24-2024
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Replies: 12
Views: 6,637
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Forum: C4 ZR-1 Technical Postings
04-20-2024
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Replies: 11
Views: 10,926
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Forum: C4 ZR-1 Technical Postings
04-19-2024
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Replies: 11
Views: 10,926
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Forum: C4 ZR-1 Technical Postings
04-14-2024
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Replies: 5
Views: 3,944
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Forum: C4 ZR-1 Technical Postings
04-09-2024
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Replies: 5
Views: 2,756
Re: Help with FX3 actuators/faults
Had a similar issue on my '90.
I removed each actuator, cleaned with WD40, applied a little silicone lube to the gears and put them back on.
Problem went away.
Crabs
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Forum: C4 ZR-1s and ZR-1 Parts For Sale/Wanted
03-29-2024
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Replies: 6
Views: 1,832
Re: 1990 ZR1 ECM Needed
I had a very sililar problem some years ago. In my case it was caused by me back probing the injector pins at the ECM plug. Big no no.
https://zr1.net/forum/showthread.php?t=10828
Hope this helps.
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Forum: C4 ZR-1 General Postings
03-20-2024
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Replies: 1
Views: 653
Re: Speedometer issue
- The C4 Corvette with ZF6-S40 uses a pulse-signal-reference generated from the Vehicle Speed Sensor (VSS). The VSS, when equipped with a 15 tooth (T) drive gear (on output shaft) and 42T driven gear...
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Forum: C4 ZR-1 General Postings
03-08-2024
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Replies: 26
Views: 4,187
Re: A question for the longtime owners.
I've owned my '90 ZR-1 for over 20 years now.
In that time I've put less than 9,000 miles on it.
Every time I drive it I risk serious jail time.
That being said, it's the funnest car I've ever...
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Forum: C4 ZR-1 General Postings
02-13-2024
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Replies: 4
Views: 1,127
Re: New engine startup in restomod 62
Give Corey Henderson at Henderson Performance Automotive in New Braunfels Texas a call, hes the closest to you. Failing that I'd call Marc Haibec for advice.
Personally, i would just gut a wrecked...
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Forum: C4 ZR-1 Technical Postings
01-16-2024
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Replies: 3
Views: 2,389
Re: SYS Light on Dash
Usually means it's time to replace your battery.
It's a CCM code, means the battery is less than 12v.
Crabs
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Forum: C4 ZR-1 Technical Postings
01-07-2024
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Replies: 4
Views: 2,911
Re: Oil in Plenum
Jerrys Gaskets has all the PVC hoses in stock:
https://www.jerrysgaskets.com/pcv-system-emissions/
A little oil is ok, a lot would be indication that something isn't quite right.
Crabs
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Forum: C4 ZR-1 General Postings
12-30-2023
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Replies: 26
Views: 4,392
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Forum: C4 ZR-1 General Postings
12-24-2023
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Replies: 12
Views: 1,737
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Forum: C4 ZR-1 General Postings
11-27-2023
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Replies: 17
Views: 6,390
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Forum: C4 ZR-1 Technical Postings
09-23-2023
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Replies: 7
Views: 2,428
Re: No start help!!
Just in case it's not entirely clear, the ignition module is the device that lives on the bottom side of the plenum.
It's also known as the DIS module.
It has connectors in front and the back. It's...
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Forum: C4 ZR-1 Technical Postings
09-20-2023
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Replies: 9
Views: 2,247
Re: Blue/Black ZF6 labels
Don't forget that late model blue label have no reverse lockout ring on shifter, the have "crash through" reverse engagement.
Crabs
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Forum: C4 ZR-1 Technical Postings
09-07-2023
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Replies: 12
Views: 4,955
Re: Limits of stock LT5 with boost?
My guess would be that all things being equal, a stock configuration LT5 on boost, the most likely first failure would be head gaskets.
We already know the bottom end is bullet proof as evidenced by...
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Forum: C4 ZR-1 Technical Postings
08-31-2023
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Replies: 4
Views: 1,608
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Forum: C4 ZR-1 General Postings
08-28-2023
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Replies: 3
Views: 1,250
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