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Date:         Tue, 13 Jan 2009 19:29:44 -0800
Reply-To:     Angus Gordon <birdworks@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Angus Gordon <birdworks@GMAIL.COM>
Subject:      Re: Running rough, dies as temp gauge starts to register
Comments: To: Mark A Kippert <vanagon@kippert.com>
In-Reply-To:  <13C0CCCB-DFAD-4EFD-B7C4-47E44B879A34@kippert.com>
Content-Type: text/plain; charset=ISO-8859-1

Mark, Unplugging the temp II sensor doesn't test anything. You need to check the sensor resistance vs temperature to determine if it's producing a valid output.

Your symptoms do fit the O2 sensor, but just wanted to point out your temp sensor test is invalid.

Glad to hear you're making progress!

Angus

On Tue, Jan 13, 2009 at 10:53 AM, Mark A Kippert <vanagon@kippert.com>wrote:

> Update. I pulled the Temp II sensor. It didn't die but it idled at > about 3000RPM and had poor power so I plugged it back in. > > I then unplugged the O2 sensor. It ran like a charm and did not die. > As a matter of fact, it runs better now than it has since I bought it. > The idle has always been around 1100RPM after warmup (higher when > cold) and now it hovers around 800RPM. Nice and smooth! > > Looks like I need a new O2 sensor. Oddly the one in there was fairly > new and couldn't have more than a couple thousand miles on it per the > PO. I did note that he had spliced the current sensor into the > existing wires. Obviously not an OEM part. > > Thanks for the input! > > Mark K > 1986 GL 2WD > > > On Jan 12, 2009, at 2:18 PM, Mark A Kippert wrote: > > The PO replaced it within the last couple years but I'll try it and >> see. >> -Mark K >> '86 GL 2WD. >> >> On Jan 12, 2009, at 12:33 PM, Mike Miller wrote: >> >> O2 sensor? >>> >>> >>> On 1/12/09 7:52 AM, "Mark A Kippert" <vanagon@KIPPERT.COM> 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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