| Author: |
| ||||
| Subject: |
| ||||
| Message: | A few observations since I just got under the hood of my 91. 1) The alt wire tube is painted. 2) I have a little protective rubber grommet/jacket at the firewall/B+ end of my tube, not the alternator end. 3) Yes, the tube is rubber isolated from ground. 4) 0 ohms between tube and intake manifold (found a chip in the tube paint and used that to probe. 5) > 5K ohms between tube and strut tower ground post. 6) > 5K ohms between intake manifold and strut tower ground post. 7) The tube passes in close proximity to the valve cover above cyl #8 (or was that #2? rookie...), although the valve cover shows infinite resistance to ground post (assume caused by paint/coating on valve cover, and I wasn't about to defeat that for further testing). Valve cover bolts, however, show 0 ohms to ground as expected. I don't see anything that could cause any path to ground of that alternator tube (of significantly low resistance to allow fire starting current flow) if installed correctly with all rubber isolators/grommets/doodads in place. The only remote possibility I see is contact between the valve cover and the alt tube due to some sort of bend or misalignment. Contact wears paint, insulation is worn off wire somewhere, perhaps at the edge, and it starts. Please don't take the above as a shot against anyone's theories or against anyone's vehicle condition or against anyone's installation abilities. I'm just posting observations on my car. -Craig | ||||
© 1997 -
2009
Jump Internet Inc. All rights reserved.
