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Search took 0.00 seconds. Search: Posts Made By: bad-zr1
Forum: C4 ZR-1 Technical Postings 01-15-2013
Replies: 21
Views: 4,238
Posted By bad-zr1
Re: Vacuum pump? Why does it buzz every 10 seconds? [snappic]

There is a vacuum reservoir located under the plenum. If the vacuum level in the reservoir drops below 41 kPa (12" Hg) the pump is turned "on" to supplement engine vacuum.
But with the engine idling...
Forum: C4 ZR-1 Technical Postings 01-15-2013
Replies: 21
Views: 4,238
Posted By bad-zr1
Re: Vacuum pump? Why does it buzz every 10 seconds? [snappic]

If you can hear it run with the engine idling you have a problem. It should not come on with the engine running at an idle. The 10-15 seconds off then on for a second or two is tested with the key on...
Forum: East Central Region 11-23-2012
Replies: 45
Views: 6,489
Posted By bad-zr1
Re: Michigan ZR-1 Owners

Add another just west of Flint in Corunna.
Forum: C4 ZR-1 General Postings 09-09-2012
Replies: 41
Views: 9,715
Posted By bad-zr1
Re: Blew up my LT5, Let the grieving begin.

One other thing you can try if you have eliminated the accessories is to remove one plug wire at a time. Use insulated pliers and have them loose before hand. It will identify what cylinder is...
Forum: C4 ZR-1 General Postings 03-11-2012
Replies: 548
Views: 62,928
Posted By bad-zr1
Re: MAP Sensor Cover

Thanks Lee, paypal sent. 1990 #1097 Red/Red
Jim
Forum: C4 ZR-1 Technical Postings 02-22-2012
Replies: 32
Views: 19,698
Posted By bad-zr1
Re: Wobbly tilt steering column repair w/Marc H pins

Thanks Hawaii. I just checked and mine does have the 2 plastic covers. I had both pins and the tilt hub replaced about 3 years ago and so I had to completly disassemble the column at the time. Did...
Forum: C4 ZR-1 Technical Postings 02-21-2012
Replies: 32
Views: 19,698
Posted By bad-zr1
Re: Wobbly tilt steering column repair w/Marc H pin

My 90 does not have the plastic covers to remove and gain access to the pin. Does anyone's 90 MY have these covers? Is it 91-95 MY only?
Thanks,
Jim
Forum: C4 ZR-1 Technical Postings 01-27-2012
Replies: 9
Views: 3,765
Posted By bad-zr1
Re: Smoking ZR1 - 1990

I have run the dry compression test many times on my 90 with 56K on it and I am always over 200 psi by the third revolution. The 4th brings me to 225 for my low reading. This is on a "cold" engine....
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