ZR-1 Net Registry Forums  

Go Back   ZR-1 Net Registry Forums > Search Forums
Reload this Page Search Results
Register FAQ Calendar Today's Posts Search

Page 1 of 2 1 2
Showing results 1 to 25 of 35
Search took 0.01 seconds. Search: Posts Made By: arf3rn
Forum: C4 ZR-1 Technical Postings 4 Weeks Ago
Replies: 24
Views: 11,219
Posted By arf3rn
Re: Poor running

Thanks for all the input and ideas from everybody-problem is I am not a diagnostician - so i did what i always do - changed more parts - put in new coils and plug wires - (put in a new starter since...
Forum: C4 ZR-1 Technical Postings 4 Weeks Ago
Replies: 4
Views: 7,035
Posted By arf3rn
Re: GM Techline tech 1

I would love copies and insight if you have any -
Forum: C4 ZR-1 Technical Postings 4 Weeks Ago
Replies: 1
Views: 536
Posted By arf3rn
Tech 1 obd 1 instructions

Anyone have instructions on how to use the Techline tech 1 obd1 reader? I have the 87-90 ecm ?plus? cartridge and the mass storage cartridge. I want to see if it will test the coils and injectors....
Forum: C4 ZR-1 Technical Postings 4 Weeks Ago
Replies: 24
Views: 11,219
Posted By arf3rn
Re: Poor running

Ok. Need to test the injectors. My understanding is you check the resistance between the ECM and the secondary injector relays one and two. Can somebody shoot me a picture of the location of those...
Forum: C4 ZR-1 Technical Postings 04-17-2025
Replies: 24
Views: 11,219
Posted By arf3rn
Re: Poor running

Yes Sir. That and new plugs, checked fire, map sensor hose, new vacuum assembly/hose that houses the ECV valves and new ECV valves. Problem started about 100 miles after that exchange. Pulled it all...
Forum: C4 ZR-1 Technical Postings 04-17-2025
Replies: 24
Views: 11,219
Posted By arf3rn
Re: Poor running

Part of my diagnosing was to pull the fuel pumps and replace them with the new single pump system.
Forum: C4 ZR-1 Technical Postings 04-17-2025
Replies: 24
Views: 11,219
Posted By arf3rn
Re: Poor running

Thank You. I haven?t had a chance to mess with it - Prob be next week before I can start on it. Thanks for the link.
Forum: C4 ZR-1 Technical Postings 04-11-2025
Replies: 24
Views: 11,219
Posted By arf3rn
Re: Poor running

I?m gonna try to nurse it out tomorrow and see if it throws another code. I?m pretty certain I cleared it last weekend. Tricky part is the engine light does not come on. It was on an a couple weeks...
Forum: C4 ZR-1 Technical Postings 04-11-2025
Replies: 24
Views: 11,219
Posted By arf3rn
Re: Poor running

I have never been a good diagnostician. I?ve always been kind of a parts changer. I just learned about open and closed loop and that?s what I?m curious about. It runs pretty decently cold, which I...
Forum: C4 ZR-1 Technical Postings 04-08-2025
Replies: 24
Views: 11,219
Posted By arf3rn
Re: Poor running

I did clear it. I can?t remember what the process was. I pressed eng/met or trip/odo or one of those buttons on the dash.
Forum: C4 ZR-1 Technical Postings 04-08-2025
Replies: 24
Views: 11,219
Posted By arf3rn
Re: Poor running

My thought too. Changed it out with a new one from Jerry?s Gaskets. No change.
Forum: C4 ZR-1 Technical Postings 04-08-2025
Replies: 24
Views: 11,219
Posted By arf3rn
Re: Poor running

Been running like a champ. Per history and receipts it got new injectors at 57k miles - was about 15 years ago and 10k miles. Car got less than 800 miles on it in 12 years. I got it last May and...
Forum: C4 ZR-1 Technical Postings 04-08-2025
Replies: 24
Views: 11,219
Posted By arf3rn
Re: Poor running

I did. Even put a new on in case I couldn?t see an issue. Still puzzled.
Forum: C4 ZR-1 Technical Postings 04-06-2025
Replies: 24
Views: 11,219
Posted By arf3rn
Poor running

1990 with 67k miles. Started having this little warble out the exhaust and occasional back fire when cold. When gets warm (closed loop I assume) runs like garbage. Dies. Won?t start till cools off....
Forum: C4 ZR-1 Technical Postings 02-20-2025
Replies: 3
Views: 9,187
Posted By arf3rn
Re: Oil Pressure Sensor

Looks like i might - according to the pic i am dealing with 12555492 - but it definitely only has one wire -
Forum: C4 ZR-1 Technical Postings 02-18-2025
Replies: 3
Views: 9,187
Posted By arf3rn
Oil Pressure Sensor

I replaced the oil pressure sensor - 3 prong -part was 1990 Silverado 5.7L - the electric wire clip is broke as well - the replacement with three prongs has three wires - the stock one on the car...
Forum: C4 ZR-1 General Postings 07-11-2024
Replies: 4
Views: 3,706
Posted By arf3rn
Re: List of VINs

Perfect. Thanks
Forum: C4 ZR-1 General Postings 07-11-2024
Replies: 4
Views: 3,706
Posted By arf3rn
Re: List of VINs

this group that we?re posting on right now? Tell me how.
Forum: C4 ZR-1 General Postings 07-11-2024
Replies: 4
Views: 3,706
Posted By arf3rn
List of VINs

Is there an ?official? or unofficial registry of all c4 ZR1 by vin? Just purchased 849 and wondered if anyone keeps tabs.
Forum: C4 ZR-1 General Postings 06-22-2024
Replies: 160
Views: 190,034
Posted By arf3rn
Re: Where do all our ZR-1 reside - updated

1990 #849 Spring Texas. Resurrected car from previous owners garage. He kept it and loved it for 12 years. Put about 800 miles on it during that time. I have already put several hundred since middle...
Forum: C4 ZR-1 Technical Postings 05-26-2024
Replies: 2
Views: 12,448
Posted By arf3rn
Re: Power washed engine bay.

You were right. I took it over to another zr1 friend and we hooked up the fuel pressure tester. Took it out for a spin and it didn?t act up at all. Learned a lesson tho.
Forum: C4 ZR-1 Technical Postings 05-24-2024
Replies: 2
Views: 12,448
Posted By arf3rn
Power washed engine bay.

OK, I think I broke a cardinal role. My auto detail guy power washed my engine. I was able to blow out the water from underneath the Plenum and put a fan on it to dry for a couple hours. But it still...
Forum: C4 ZR-1 General Postings 05-19-2024
Replies: 32
Views: 10,043
Posted By arf3rn
Re: ZR1 Detectives

Ok. I shopped close by and found my car. Going this week and looking at it and hopefully driving it home. It is a Houston car with 66k miles and 3 owners. It has lived in Houston all its life. Thanks...
Forum: C4 ZR-1 General Postings 05-16-2024
Replies: 32
Views: 10,043
Posted By arf3rn
Re: ZR1 Detectives

Thanks for the info - I am going this weekend and look close to home.
Forum: C4 ZR-1 General Postings 05-16-2024
Replies: 32
Views: 10,043
Posted By arf3rn
Re: ZR1 Detectives

Ok. Fair enough- thanks for the tip.

BTW - how does the scam work?
Showing results 1 to 25 of 35
Page 1 of 2 1 2

 
Forum Jump

All times are GMT -4. The time now is 05:32 PM.

Contact Us - ZR-1 Net Registry - Archive - Privacy Statement - Top

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2025, vBulletin Solutions Inc.
Copyright ZR-1 Net Registry 2025