Subject	Brand new O2 sensor slow response
Posted by	Zarcasm(Hfd, CT) on March 23, 2009 at 11:14 PM
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Message	I did an ECU self-check on my '93 NA and the LHS O2 sensor worked great, but the RHS responded slowly or didn't respond at all. The problem isn't bad enough to bring the check engine light on. Also the RHS 3 cylinders seem to be running rich so I installed a new RHS O2 sensor. Now the problem continues with the new O2 sensor. Fuel pressure checks good too. Any ideas?
Follow Ups	Brand new O2 sensor slow response - Zarcasm(Hfd, CT) 23:14:08 03/23/09 Make sure you did not get right and left sides confused. - Fast300 00:32:37 03/24/09 I'm sure I got it right. - Zarcasm(Hfd, CT) 18:23:56 03/24/09 The CEL will not come on for a slow O2 sensor>> - ZUL8TR 16:35:53 03/25/09 Right. But you'll notice it in Mode II check>> - Zarcasm(Hfd, CT) 22:02:27 03/25/09 Hook up a vacuum gage after the throttle bodies >>> - ZUL8TR 09:25:17 03/26/09 Thanks! Does the O2 sensor screw into an additional nut>> - Zarcasm(Hfd, CT) 23:23:40 03/26/09 The extra nut on the O2 needs to be removed so the new one > - ZUL8TR 05:22:11 03/27/09 Intake manifold vacuum maybe steady... maybe not - Zarcasm(Hfd, CT) 19:38:10 03/29/09 That vacuum reading at idle is good. The vibs occured > - ZUL8TR 14:43:24 03/30/09 I'm not sure intake vacuum is ok. Valves?! - Zarcasm(Hfd, CT) 21:06:04 03/30/09 You say that the RHS O2 is normal and all RHS plugs>>> - ZUL8TR 14:47:08 03/30/09 My mistake: meant to say LHS O2 is completely normal - Zarcasm(Hfd, CT) 20:28:19 03/30/09
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