James wrote:
> I have a 1980 CJ5 Jeep, with V8 engine. I have very extreme ignition
> noise, of course on am only. Fm works fine.
>
> I have replaced the plugs, and later installed high quality, carbon core
> plug wires.
>
> Someone here ( I think Mike Romain, not sure) has said that a defective
or
> worn braided strap from the engine to the firewall may cause severe
ignition
> noise, and other problems. I am not a mechanic, but I have looked for
> this wire, and don't find it. Is it visible from under the hood ?
>
> What other efforts can I try to get rid of this ignition noise ?
>
> Thanks !
>
> James
>
Your engine should have one mesh strap going across an engine mount to
ground the chassis frame and another going to the firewall from the back
of the engine. It is top dead center so if you don't see it is isn't
there.
Some folks wire them with a cable from the battery negative to the
firewall or fender. The fender isn't really a good ground, too many
bolts to rust up between it and the tub.
The mesh cable is also the best one for RF noise. A battery cable
ground will transmit noise better.
The stereo also might want it's own ground to the battery so it doesn't
use the noisy body.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
'New' frame in the works for '08. Some Canadian Bush Trip and Build
Photos: http://mikeromainjeeptrips.shutterfly.com
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