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Re: 93 ev mv wkndr power loss

Michael G. McCarthy #7323 An engine of the 90's with everything working BUT the cat will handily pass emissions tailpipe testing, and obviously a gutted cat will pass the visual inspection. ?A fair question to ask is how much environmental damage is done producing a new cat versus how much environmental damage is done driving around with a gutted one? ?There is no free lunch. ?My guess is the best thing you can do for the environment is make sure your OXS sensor is working correctly (my guess is that if your OXS sensor is faulty and slips into its default-to-rich mode, you'll be doing lots more eco-damage than running with no cat at all). Mike ---------- From: Brett To: ev_update@... Subject: Re: [ev_update] Re: ?93 ev mv wkndr power loss Date: Mon, May 8, 2000, 1:52 PM toggle quoted message Show quoted text I recently had similiar power loss problems. ?My '93 Eurovan would loose power and not rev past 3000 rpm. ?I thought immediately that it was an oxygen sensor problem. ?Unpluging the oxygen sensor seemed to help, but only for a few minutes of driving. ?I limped it over to my friends garage and he hooked it up to the OBD computer and it came up with a bad OXS and bad coolant temp sensor. ?The OXS had been replaced on the van previously and the code might not of been reset so on Friday I took the cheap route and replaced the $11 coolant sensor. ?This morning (Monday) I was back at the dealer buying the $170 OXS . ?It didn't seem to fix the problem either. It ends up the cat is toast. ?It has a shattered core. ?I cut the exhaust and undid one pipe connection and dumped it out this morning. ?After putting everything back together, it runs great. ?The exhaust rattle I thought I had is gone too. ?Turns out it was the cat pieces rattling around. Has anyone on the list priced Catalytic Converters lately? Brett Corneliusen mailto:afmoa@... ????-----Original Message----- ????From: Michael G. McCarthy <mgmccarthy@...> ????To: ev_update@... <ev_update@...> ????Date: Monday, May 08, 2000 10:42 AM ????Subject: Re: [ev_update] Re: 93 ev mv wkndr power loss ???? ???? ????It's certainly true that a fouled and/or poorly connecte OXS sensor will cause a variety of problems. ??I disconnected and re-connected mine once and immediately could not smoothly rev the engine (it stumbled badly under load in the vicinity of 3000 rpm). ?The problem DID go away with the OXS sensor disconnected, so that's an easy and quick test. ???? ???? ????Mike ???? ????---------- ????From: morrismec@... ????To: ev_update@... ????Subject: Re: [ev_update] Re: ?93 ev mv wkndr power loss ????Date: Mon, May 8, 2000, 11:30 AM ???? ???? ???? ????????I had a 93 evc and it did the same thing . The dealer couldn't fix it as he ????????said he had to see it happen . I gave it to them for a week and still no help ????????as i drove it away from the shop it happened again ,I was so disgusted I ????????started looking myself even tho it may have voided the warranty.I think the ????????problem left after i replaced the o2 sensor.I learned to turn the switch off ????????and on while running down the road ?after awhile it would clear up.There was ????????bulletine issued by vw that said it could be the contact on the ayr folw ????????meter that was momentarily losing comtact. ???????? ????????------------------------------------------------------------------------ ????????High rates giving you headaches? The 0% APR Introductory Rate from ????????Capital One. 9.9% Fixed thereafter! ????????http://click.egroups.com/1/3010/3/_/1963/_/957799828/ ????????------------------------------------------------------------------------ ???????? ???????? ???????? ???????? ---------------------------------------------------------------------------- ??? ???? ???? ???? ---------------------------------------------------------------------------- ???

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#7323

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