Forum: C4 ZR-1 Technical Postings
08-30-2024
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Replies: 10
Views: 5,691
Re: C4 ZR-1 Coolant Problem
Sitting still the fans will come on. First on point is around 225, second around 235. You can send your prom out and have the set points adjusted lower. Do you have a FSM?
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Forum: C4 ZR-1 Technical Postings
08-24-2024
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Replies: 5
Views: 4,508
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Forum: C4 ZR-1 Technical Postings
07-19-2024
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Replies: 2
Views: 5,861
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Forum: C4 ZR-1 Technical Postings
07-19-2024
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Replies: 2
Views: 5,861
ECM ?
Are all ECMs 90-95 the same? can I use a 90 ECM with a 92 prom? Looking to help a buddy with multi issues no Speed read out/no AC/ ABS/ CEL. and make sure its not an ECM issue. As it started at...
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Forum: C4 ZR-1 Technical Postings
07-15-2024
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Replies: 6
Views: 5,639
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Forum: C4 ZR-1 Technical Postings
07-10-2024
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Replies: 44
Views: 24,830
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Forum: C4 ZR-1 General Postings
05-28-2024
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Replies: 12
Views: 5,989
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Forum: C4 ZR-1 Technical Postings
04-19-2024
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Replies: 11
Views: 18,270
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Forum: C4 ZR-1 Technical Postings
03-23-2024
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Replies: 10
Views: 5,741
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Forum: C4 ZR-1 Technical Postings
03-22-2024
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Replies: 10
Views: 5,741
Re: Low level LCD Display 90s
Jeff I think your miss-understanding what I'm asking. HOB issue -64 page 35 Marc H has a write up on adding a 22k Ohm resistor to increase the low level display lighting on the 90. In the 91 this...
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Forum: C4 ZR-1 Technical Postings
03-22-2024
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Replies: 10
Views: 5,741
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Forum: C4 ZR-1 Technical Postings
03-21-2024
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Replies: 10
Views: 5,741
Low level LCD Display 90s
In the latest HOB Marc has a write up about adding a 22k Ohm resister to help low lighting on the 90's .
Can a 91 set-up be used in replacement of the 90 to resolve this?
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Forum: C4 ZR-1 General Postings
03-06-2024
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Replies: 26
Views: 5,190
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Forum: C4 ZR-1 General Postings
12-24-2023
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Replies: 12
Views: 2,336
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Forum: C4 ZR-1 General Postings
11-26-2023
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Replies: 17
Views: 7,002
Re: Saw a Unicorn.
Guess I live in unicorn land at least 6 live within 10 miles of me.... 3 of them came from unicorn ranch.
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Forum: C4 ZR-1 Technical Postings
11-23-2023
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Replies: 2
Views: 3,994
Re: 1990 ZR1 charcoal canister
PM me an email I can send pics of mine, no way to post pics here
FSM Section 6E3-C3-1 to 4
Sent mine looks a bit different as far as routing
OK I found the line it comes off the...
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Forum: C4 ZR-1 General Postings
11-02-2023
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Replies: 308
Views: 85,978
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Forum: C4 ZR-1s and ZR-1 Parts For Sale/Wanted
10-06-2023
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Replies: 3
Views: 1,681
Re: WTB 90 Center radio Bezel
Are you saying the switch mountings on the back are the same on a 90 & 91? If so I could live with the green light slot better than 2 holes drilled in it.
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Forum: C4 ZR-1s and ZR-1 Parts For Sale/Wanted
10-06-2023
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Replies: 3
Views: 1,681
WTB 90 Center radio Bezel
Some previous owner drilled holes in mine. :neutral:
I have a nice 91 I would trade if that helps.
I would use it but not sure if the switch mounting are the same.
Thanks
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Forum: C4 ZR-1 General Postings
10-04-2023
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Replies: 44
Views: 15,889
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Forum: C4 ZR-1 General Postings
10-02-2023
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Replies: 7
Views: 2,264
Re: 1990 2355
Turned out to be a very nice car runs out very well I m getting new tires on today. Wish I could post pics here
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Forum: C4 ZR-1 Technical Postings
10-02-2023
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Replies: 10
Views: 15,585
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