Every time it has done this, I have checked all of the connections and lines. Everything looks fine but how can you really tell when it only does this once a year or so??

 

Yeah, I feel for you. These sorts of things can be a real pain to track down.

 

As evryone has pointed out I had a 2.8l firbird that the ignition module went out and it tested good buuuuuuuuuuuut the symptoms you describe sound just like what I went through with an '89 S10 Blazer 4.3l TBI chased the problem for at least 6 months (usually when the wife had it) turned out to be the fuel pump. I took it apart after changing it and the shaft was stripped away from the impeller (sp?)

Steve :steering:

 

Far far far cry from the olde tyme daze of a Carter carb, diaphram fuel pump, point-condenser, wires and plugs.....

gotta be a freaking ET or at least EE, to even begin to look intelligently at anything newer than say '82, and that's just GM.....they all this way now.....
Thank GOD there are only just so many tricks to running an internal combustion engine via electronic controlls.....anything more than that, and it would be silly allready....and they are trying their damdest to make it even more complicated to justify jobs, I guess....

GENE

 

Wait until the solenoid actuated valves become common. A whole new set of electronics and no camshaft(s).

Actually, IMO the worst cars to work on where early-mid 80's to the early 90's. That's when they had a million vacuum hoses AND electronics. And the electronics were pretty crappy. Mid 90's and up are much easier as most vacuum hoses went away and the diagnostics improved.