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
>
>