Yes, shield it or run it where there is little or no interference. I recently put my oscilloscope on the O2 lead of one of my Vanagons when getting it ready for a smog test. For fun I pulled the unshielded part up near the ignition coil but it made no difference. It did put a little more noise on top of the signal but did not change the response of the ECU to the sensor reading as far as I could tell. I have seen lots of Vanagons with the unshielded sensor wire zip tied up nearer to the coil than I would have thought wise but it seems to not be a problem. Mark vw4x4 wrote: > Marc, > Most of the time you are right, that using unshielded > wire will not make a difference. The problem comes > into play if there is a source of electrical noise like a plug > wire or a high frequence source is near by. > Eric > > > mark drillock wrote: > >> I doubt that it makes much difference as long as the center conductor is >> stranded. Almost half the O2 wire run on a vanagon is unshielded anyway. >> The frequency of the signal is in the 1 hertz range. People often hook >> up 15 feet of unshielded cable to connect a monitor or O2 led display on >> Vanagons. List member Ken Lewis makes and sells one that mounts in the >> unused switch hole in the instrument cluster. >> >> Mark > |
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