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
>
>