[mark houghton]

Picture this: A beautiful morning, with the last remnants of winter snow rimming the surrounding mountain tops, fixing to be a sunny 85 degrees, and I jump in the faithful 930 for an early morning attitude adjustment as I motor off to work. After stopping for a tank of gas, she'll crank but won't fire back up. My attitude adjustment just went south. So now she sits at the local gas station, waiting for diagnostics and/or a tow home later this afternoon.

Fuel or spark...one of the two. I did the normal diagnostics - pulled the electrical plug on the back of the fuel distributor that connects to the control arm micro switch to force the fuel pumps to run.....nothing. Pulled the yellow relay, cleaned the contacts and re-inserted....nothing. Note that when pulling the plug at the fuel distributor, I can hear/feel the yellow relay actuate.

Also checked both pump fuses up front in the fuse panel...not hot to the touch. And I even tried swapping them out with other round red fuses from places not needed (like the AC)....still nothing.

Where else to look? Overboost sensor, maybe? The weird thing is that the yellow relay audibly actuates, though I know that's doesn't necessarily mean that it's not the cause. Isn't there some way to short around that relay to take it out of the equation, and/or short to ground the overboost sensor wire to take it out of the equation?

I'll figure this out in the long run, and hopefully in the parking lot vs. towing home. Your diagnostic expertese would be much appreciated!