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Date:         Mon, 12 Jan 2009 14:22:41 -0500
Reply-To:     Mark A Kippert <vanagon@KIPPERT.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Mark A Kippert <vanagon@KIPPERT.COM>
Subject:      Re: Running rough, dies as temp gauge starts to register
In-Reply-To:  <496B826A.3050504@cox.net>
Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes

I did sort out the screwed up wiring and for about a month everything ran fine...until now. I will try disconnecting the O2 the next time and see what happens.

Mark K '86GL 2WD

On Jan 12, 2009, at 12:48 PM, mdrillock wrote:

> Your earlier posts about your engine wiring problems had a photo that > showed wires connected to the wrong things. I hope you found a similar > year van to compare yours to as those wires should not be left > connected > the way the were. > > The suggestion to unhook the main wire to your OX sensor is the > place to > start for your current problem. This won't prove a problem with the OX > sensor but could at least make it so you can drive it while later > figuring out the real problems. The ECU uses the readings from the OX > sensor to tune the fuel/air mixture. When the sensor is unplugged the > ECU stops trying to tune the mixture and instead relies on a default > fuel mixture from its internal program memory. This can make it seem > to > run better but sometimes causes much higher fuel use. > > Mark > > > > Mark A Kippert wrote: >> I thought I had my problem solved after cleaning all my grounds and >> repairing some broken wires. I also replaced plugs cap and rotor. It >> was sporadic prior to the steps above then it cleared up. Now it's >> continuous. >> >> As soon as the temperature gauge starts to register the van starts to >> run rough, quickly looses power, then dies. I found that if I switch >> the key off, then right back on it will run fine for about 30 seconds >> then it starts over. As soon as I feel it running rough again, I turn >> the key off/on quickly and get another 30 seconds. >> >> It doesn't matter if I'm driving along or idling at a stop. >> >> Since I got the van I've noticed that it takes a good 10-15 minutes >> (or longer) to warm up. When warmed up, it's barely outside the >> "white >> zone" on the gauge. I had planned to replace the thermostat, but >> can't >> imagine this is the cause of the problem. >> >> It sounds like ECU is getting bad info from a sensor. Does this sound >> likely, and if so, what should I consider first. >> >> I did try searching the database but it timed out. >> >> Thanks for any suggestions as to where to start. >> >> -Mark K >> >>


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