New Here and with problems of course! - ZR-1 Net Registry Forums

CKJ · 06-19-2006

I just bought a used 92 z with pretty high miles that had been in storage for several years. I've been fumbling around for a few weeks in order to get it running and it is running.

Firstly the car was dying after about 5 mins of running or when it hit temp. I changed the fuel pumps and it didnt help. It was actuall a ground coming off the the fuel pump harness that was loose.

I changed all the fluids in the car, put a new battery, new plugs, air filter, fuel pumps, fuel filter, pcv valves, new tires on it.

I have a few concerns right now and wanted your guys feedback. The tranny appears to be running REALLY hot. I can go for a 45 minute cruise and cannot touch the ash tray area around the shifter without it almost burning my skin.

Secondly I took it for a hour drive on the freeway last weekend and was cruising around 65mph. I wanted to "get the carbon out" and I dropped it into 3rd and let it have it. I almost broke my neck, but when I hit about 105 the whole shifter area in the car started vibrating out of control. I've put 300 miles on the car now and this only has happened when I got up to speed. Is there a bearing or bushing or something in the drivetrain that could be responsible or ??

I was also wondering if there is a breakdown of speeds by gears. It feels like my rear end has been changed out or is geared down for quick acceleration.

Sorry for the rambling first post, trying to figure out this car but it sure is going to be a fun project now that I've finally converted over from the old saleen mustang family.

Aurora40 · 06-19-2006

Speed/gear rating from an old Road & Track:

Gear Ratio Mph/1000 rpm Max speed

1 2.68 8.1 56mph (7000 rpm)
2 1.80 12.0 84mph (7000 rpm)
3 1.31 16.5 116mph (7000 rpm)
4 1.00 21.6 151mph (7000 rpm)
5 0.75 28.8 179mph (6200 rpm)
6 0.50 43.2 142mph (3300 rpm)

Did you change the tranny fluid? Is it properly full? That seems odd it would get so hot like that. The vibration might be loose bolts, I believe the C-beam bolts are a common thing to be loose allowing the shifter to move around? I thought that tended to be more of lifting under throttle of the shifter, not vibrating at higher rpms.

CKJ · 06-19-2006

The tranny is also noisy as can be. I'll check the fluid on it tonite after work. I had the dealer change all the fluids in the car so it had better be correct

8upZR1 · 06-19-2006

With regards to your hot ash tray, you should check the rubber boot that isolates the shifter/interior. Air passing through the engine bay will pick up heat from the exhaust and heat the entire tunnel. This hot air might be coming through the boot if it is torn.

tccrab · 06-19-2006

The vibrations might be the wheel sensors.
If the CBeam bolts are tight, U-Joints check out ok, it might be useful to have the rear tires spun balanced. If the wheel sensors have come apart that will be the easiest/cheapest way to find out.

TomC
'90ZR1

06-19-2006	#1
CKJ Join Date: Jun 2006 Posts: 3	New Here and with problems of course! I just bought a used 92 z with pretty high miles that had been in storage for several years. I've been fumbling around for a few weeks in order to get it running and it is running. Firstly the car was dying after about 5 mins of running or when it hit temp. I changed the fuel pumps and it didnt help. It was actuall a ground coming off the the fuel pump harness that was loose. I changed all the fluids in the car, put a new battery, new plugs, air filter, fuel pumps, fuel filter, pcv valves, new tires on it. I have a few concerns right now and wanted your guys feedback. The tranny appears to be running REALLY hot. I can go for a 45 minute cruise and cannot touch the ash tray area around the shifter without it almost burning my skin. Secondly I took it for a hour drive on the freeway last weekend and was cruising around 65mph. I wanted to "get the carbon out" and I dropped it into 3rd and let it have it. I almost broke my neck, but when I hit about 105 the whole shifter area in the car started vibrating out of control. I've put 300 miles on the car now and this only has happened when I got up to speed. Is there a bearing or bushing or something in the drivetrain that could be responsible or ?? I was also wondering if there is a breakdown of speeds by gears. It feels like my rear end has been changed out or is geared down for quick acceleration. Sorry for the rambling first post, trying to figure out this car but it sure is going to be a fun project now that I've finally converted over from the old saleen mustang family.

06-19-2006	#2
Aurora40 Join Date: May 2005 Location: Leesburg, VA Posts: 2,713	Re: New Here and with problems of course! Speed/gear rating from an old Road & Track: Gear Ratio Mph/1000 rpm Max speed 1 2.68 8.1 56mph (7000 rpm) 2 1.80 12.0 84mph (7000 rpm) 3 1.31 16.5 116mph (7000 rpm) 4 1.00 21.6 151mph (7000 rpm) 5 0.75 28.8 179mph (6200 rpm) 6 0.50 43.2 142mph (3300 rpm) Did you change the tranny fluid? Is it properly full? That seems odd it would get so hot like that. The vibration might be loose bolts, I believe the C-beam bolts are a common thing to be loose allowing the shifter to move around? I thought that tended to be more of lifting under throttle of the shifter, not vibrating at higher rpms. __________________ Bob Saveland Former owner of #2517 [IMG]http://a.random-image.net/aurora40/vette.jpg[/img]

06-19-2006	#3
CKJ Join Date: Jun 2006 Posts: 3	Re: New Here and with problems of course! The tranny is also noisy as can be. I'll check the fluid on it tonite after work. I had the dealer change all the fluids in the car so it had better be correct

06-19-2006	#4
8upZR1 Join Date: Jun 2006 Location: Thunderbolt, Ga. Posts: 253	Re: New Here and with problems of course! With regards to your hot ash tray, you should check the rubber boot that isolates the shifter/interior. Air passing through the engine bay will pick up heat from the exhaust and heat the entire tunnel. This hot air might be coming through the boot if it is torn. __________________ IT IS THE FATE OF THE INNOCENT TO MEET WITH DEATH!!!

06-19-2006	#5
tccrab Join Date: Oct 2004 Location: Folsom CA Posts: 1,654	Re: New Here and with problems of course! The vibrations might be the wheel sensors. If the CBeam bolts are tight, U-Joints check out ok, it might be useful to have the rear tires spun balanced. If the wheel sensors have come apart that will be the easiest/cheapest way to find out. TomC '90ZR1 __________________ TomC '90ZR1 #792 Honorary Pirate [B]If it ain't FUN, you're doing something terribly WRONG. [/B]