ZR-1 Net Registry Forums - View Single Post - 90 ZR-1 #2273

S.hafsmo · 02-22-2018

As mentioned before, I've had some idle issues. A couple days ago I picked up the investigation with the following results. The car idles steady at approx. 750 RPM when the fans are running. If I plug the bore to the primary blade, the idle reduces to 700. IAC count obviously at zero.
I removed the TB for another inspection, and it's obvious that there is quite a bit of wear on all the plates. The secondary blades show a lot of light around the shafts, and the primary lights up everywhere.
Instead of going through with the whole DAG-procedure, I've now packed up the TB and sent it of to the US for Marc to work his magic. Must say I'm curious if he'll be able to mend it.

I've also removed the exhaust, as the pilot bearing is next on the list of jobs.

The daily effort is rather limited due to the 5°F in my garage.

02-22-2018	#44
S.hafsmo Join Date: Nov 2016 Location: Norway Posts: 397	Re: 90 ZR-1 #2273 - To be rescued As mentioned before, I've had some idle issues. A couple days ago I picked up the investigation with the following results. The car idles steady at approx. 750 RPM when the fans are running. If I plug the bore to the primary blade, the idle reduces to 700. IAC count obviously at zero. I removed the TB for another inspection, and it's obvious that there is quite a bit of wear on all the plates. The secondary blades show a lot of light around the shafts, and the primary lights up everywhere. Instead of going through with the whole DAG-procedure, I've now packed up the TB and sent it of to the US for Marc to work his magic. Must say I'm curious if he'll be able to mend it. I've also removed the exhaust, as the pilot bearing is next on the list of jobs. The daily effort is rather limited due to the 5°F in my garage. __________________ - '90 ZR-1 Last edited by S.hafsmo; 02-22-2018 at 03:21 AM.