Forum: C4 ZR-1 Technical Postings
10-02-2024
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Replies: 32
Views: 3,164
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Forum: C4 ZR-1 Technical Postings
10-02-2024
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Replies: 32
Views: 3,164
Re: Fires then dies. HELP
I suggest that you check the fuel pressure at the fuel rail before the ignition key is turned and after the motor dies after starting. Fuel pump may be fine but the command it's getting from the ECM...
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Forum: C4 ZR-1 Technical Postings
10-01-2024
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Replies: 32
Views: 3,164
Re: Fires then dies. HELP
You are thinking primary fuel pump may be bad. Arn't you? I was wondering the same. Car may be starting on pressure generated by the secondary pump but secondary pump shutting off and with primary...
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Forum: C4 ZR-1 General Postings
09-30-2024
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Replies: 10
Views: 2,283
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Forum: C4 ZR-1 Technical Postings
09-25-2024
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Replies: 3
Views: 1,502
Re: Help
https://www.corvetteforum.com/forums/attachments/c4-zr-1-discussion/48198453d1503319385-secondary-throttle-system-delete-question-plenum-vacuum-schematic-1990.jpg
Try above.
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Forum: C4 ZR-1 General Postings
09-25-2024
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Replies: 5
Views: 1,376
Re: A good source for NOS parts?
https://www.ebay.com/itm/275283181170?_skw=1991+corvette+flame+red+speaker+cover&itmmeta=01J8MK56HP3KCNAY7PYWW05T0S&hash=item401827fe72:g:v2AAAOSwoZFm2asR&itmprp=enc%3AAQAJAAABAHoV3kP08IDx%2BKZ9MfhVJK...
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Forum: C4 ZR-1 Technical Postings
09-24-2024
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Replies: 4
Views: 1,621
Re: FX3 upgrade from 1990 to 1992
On my car, a 94, I was tripping code for front. Upon careful examination, I noticed OEM set up has rubber bushing between the top of the shock to underside of the steel bracket and another rubber...
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Forum: C4 ZR-1 General Postings
09-18-2024
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Replies: 10
Views: 2,283
Re: WAZOO Maintenance Day
For sure this is the best area along with Chicago to own and operate C4 ZR-1 in the world. Without WAZOO guys, I would have given up on my 94 a long time ago.
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Forum: C4 ZR-1 Technical Postings
09-09-2024
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Replies: 3
Views: 2,813
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Forum: C4 ZR-1 General Postings
08-30-2024
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Replies: 7
Views: 2,155
Re: Registry tent at Carlisle 2024
A great big thanks to those guys who showed up early and did all the prep work and special thanks to Dredge guy for the best pulled pork barbeque I ever ate.
Although I could only make Thursday this...
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Forum: C4 ZR-1 Technical Postings
08-30-2024
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Replies: 10
Views: 5,691
Re: C4 ZR-1 Coolant Problem
The car drained 8 qts and was supposed to drain 14 qts. The coolant looked in good condition. It took 8 qts on refilling. The coolant was bubbling on refill with car running. Upon starting the car,...
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Forum: C4 ZR-1 Technical Postings
07-13-2024
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Replies: 2
Views: 5,851
Re: How to reset FX3 cod eon 1994 ZR1
SRC light will not turn on once malfunction has been addressed. I never tried resetting but even if you clear the code, unless the repair has been made, SRC light will light up again.
Also, if the...
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Forum: C4 ZR-1 Technical Postings
07-12-2024
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Replies: 4
Views: 7,838
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Forum: C4 ZR-1 Technical Postings
06-23-2024
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Replies: 10
Views: 13,473
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Forum: C4 ZR-1 General Postings
05-30-2024
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Replies: 19
Views: 7,983
Re: Aftermarket Head Unit Question
Built in GPS/Navigation no longer make any sense. In my 22 Corvette I run Waze and AppleCarPlay displays it on the display panel.
As for the Metra harness, if you know how to solder, you can cut...
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Forum: C4 ZR-1 General Postings
05-29-2024
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Replies: 19
Views: 7,983
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Forum: C4 ZR-1 General Postings
05-29-2024
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Replies: 19
Views: 7,983
Re: Aftermarket Head Unit Question
Although I have not installed either Pioneer DMH you and subfixer referred to, having installed 3 Pioneers double din units with CD and DVD players, as long as front panel doesn?t have to flip open...
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Forum: C4 ZR-1 General Postings
05-20-2024
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Replies: 12
Views: 5,989
Re: New member / owner.
Welcome to ZR-1 registry. My very Corvette was a 79 L48 with mighty 185 horses I bought in July 79. Don?t seem that long ago?
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Forum: C4 ZR-1 Technical Postings
05-10-2024
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Replies: 10
Views: 14,731
Re: Radio will not work
Fact that the radio is failing to trigger power antenna (assuming power antenna itself has not failed) leads me to suspect headunit failure.
I would send both headunit to Dr. Don and have him check...
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Forum: C4 ZR-1 Technical Postings
05-02-2024
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Replies: 7
Views: 12,133
Re: Radiator Cap
Below, I believe, is what came with the car and replaced with the same about 10 years ago. AC-Delco 15 psi.
...
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Forum: C4 ZR-1 Technical Postings
04-27-2024
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Replies: 11
Views: 19,093
Re: Tire pressure sensors
If you want to keep stock system, EBay probably is the best bet. Sensors are specific to each corner I think.
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Forum: C4 ZR-1s and ZR-1 Parts For Sale/Wanted
04-24-2024
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Replies: 2
Views: 2,220
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Forum: C4 ZR-1 General Postings
04-22-2024
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Replies: 7
Views: 2,602
Re: Alternative Higher Amp Alternator (140 amp)
Zack,
Higher amp alternator does not require an extensive rewiring. All that's needed is beefing up from alternator to the battery by adding a 8 ga. wire. also, Marc recomended beefing up and...
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Forum: C4 ZR-1 Technical Postings
04-22-2024
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Replies: 1
Views: 9,464
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Forum: C4 ZR-1 Technical Postings
04-17-2024
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Replies: 12
Views: 15,535
Re: Door Lock Actuators
Not really knowing what your car is doing, door lock actuators being actuated while driving can be caused by faulty door light switch. My 94 was doing this and I tracked it down to faulty door light...
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