Always first thing to do is disconnect the O2 sensor and see if it makes
a difference.

John

On 7/9/2013 10:37 AM, Jeff Lincoln wrote:
> OK, so it rained pretty hard here yesterday. I made the 20+ mile commute
> home just fine - went into the house for about 30 min or so and then headed
> back out to a meeting.
>
> I drove maybe a quarter mile, stopped at the store, then made it maybe
> another quarter mile and she quit running at the stop light. Would not
> restart. I had to go about my business so I didn't make it back to the bus
> for about 1 1/2 hrs.
>
> I didn't know what to do - everything looked dry in the engine - she just
> wouldn't start. So removed the coil wire and sprayed some WD-40 on the
> cable, the coil, and the center of the dist cap. After some trying she
> finally started - ran like crap - stalled a few times - FInally got her to
> idle. She idled real rough. If you tried to give her any throttle she would
> die out. If you feathered the throttle and gradually got it up to around
> 3000RPM you could hold it there.
>
> After doing this dance for a bit she finally idleded normal. I drove her
> home - keeping the RPM's up because if it dropped down around 2000k or
> lower she would want to stall out.
>
> I let her idle at home for a while and started her later on and she seemed
> OK. THis morning she ran rough and didn't want to get up to speed (power
> loss and attempting to stall at higher RPM). Once I feathered the throttle
> and got her up to speed and RPM she ran fine the rest of the commute to
> work.
>
> All I can say is what the heck?!!!
>
> I went through this before. I was getting water in the gas tank. A new tank
> and all new seals later I thought i had this taken care of - I guess not.
>
> She has a new DIst Cap and Roter (and a good used ECU recently). The fuel
> pump is running (and doing the pre-pump as it should before starting).
>
> At this point I am not sure what to try next. I am thinking it's
> electrical. The only thing that isn't new is the coil and the plugs and
> plug wires.
>
> It only does this when it rains real hard and there is a lot of water on
> the road (lighter rains and snow do not cause this issue).
>
> So, oh wise list members, any suggestions on where I turn next?
> Thanks,
>
> Jeff
> '85 GL (Gertie)
> '78 Bus (Melissa) Patty's Bus
> .
>