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O2 sensor; use of 4 wire on 3 wire car

uid 27's pic
posted by  Art Benstein on  Wed Nov 29 11:22 CST 2006
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last visit: Fri Oct 17 20:10 CST 2014
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Hi Gary,

Five or six years ago I won a pair of "volvo spark plugs" on e-bay I recognized as new 4-wire sensors. I used one to replace the '89's after it was fouled by a leaky AW-70 tailshaft. Just like you suggested, I grounded it at the firewall to cam cover braid. Works great, and believe me, there's no benefit, or special compensation built in to accommodate the use of the rusty exhaust pipes, bolts, and manifold as a ground reference for that circuit. The four wire configuration can only be an improvement.
--
Art Benstein near Baltimore

If there are no dogs in Heaven, then when I die I want to go where they went.
-Will Rogers






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New O2 sensor; use of 4 wire on 3 wire car
posted by  Nick940  on Wed Nov 29 01:16 CST 2006 >


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