all clean and tight

Crank shaft position sensor and ignition control module are the most common causes for what you are experiencing, but it could also be the camshaft sensor. Although, if that was the problem I would expect a P0341 code. Are you scanning for diagnostic trouble codes? A bad cam sensor can cause the engine to stumble and stall, but will not prevent starting up again. You can test it with a multi meter.

Jack the front right corner up and remove the wheel and fender liner in order to access the harmonic balancer. Using a piercing probe on the positive lead of the multi meter pierce the insulation on the wire marked "J" on the electrical connector going to the ignition control module. This should be the second wire to the left of the bolt in the center of the connector. Set the meter to DCV and touch the negative lead to a good ground. DISCONNECT THE ELECTRICAL LEADS TO ALL 6 INJECTORS. Use a ratchet wrench extensions and the correct socket to turn the crank pulley clock wise (you need a helper to do this) while observing the multi meter. The meter should read 5 to 7 volts at all times, except once in every two revolutions of the the engine the reading will drop to zero. This happens when the interrupter on the cam passes the cam sensor. You need to observe two revolutions since the cam shaft turns one revolution for every two revolutions of the crank shaft.

Do not use the starter to turn the engine over.

If your readings are not consistent with this you have a bad cam sensor or the interrupter has fallen off the cam gear.

it turned out to be the MAF sensor.... car running great now

Eric,

Thanks for posting the fix!

my next weekend i will hook scan tool up and post all the readings. it would be great to get a base line of normal readings so others could compare if its possible to get an average.

I have issues as you. 02 bonneville. Could drive 50-60 miles and be fine. Then acts like
it runs out of gas. Scanned it and both the maf read to hi and the tp had no voltage. Replaced both and problem still there. Ran the car with scan too connected. Watched all signals and when the car died all was working perfectly. Crank censor cam tp map everything was in range. But would not start. Fuel pump relay is on and can hear pump run. I'm gonna try replacing the gas filter and hope for the best. Btw did not trip the mil. Keep me posted on your issues. Ill do the same here. It does restart but could take ten minutes or more and multiple tries.

When it stalls does it shut down like someone flipped a switch? Or, does it cough and sputter? If it shuts down like flipping a switch I would suspect the crank shaft position sensor. Very common failure on your car.

It cuts out a time or two then shuts off. The cp sensor was still giving signal when it quit. Also had signal whole cranking. I have a snap on solus scanner so I could svroll all the readings at once. I've done the wiggle test on the whole wire harness and had no problems. The car has 189000 and best of my knowledge the gas filter hasn't been replaced in years. Its actually rusted the fitting so bad I can't get it apart. This has happend 5 times now. 3 of tjose never threw a code. The other two said tp and maf sensor. I replaced and has happened since. One time throwin the lite for the same reading and one not. The car is perfect condition but this is souring me big time.

in that case im thinking icm. it would help rule out fuel if you had a fuel pressure gauge and taped it to the windsheild and drove it that way until you had the issue, the the pressure cuts out its something to do with the pump or wireing or relay or socket

That'* my thoughts also. I'm going to replace the filter today kinda hope that I find something in there that'* causing the problem. If not then ill do the icm. Its very frustrating even more when it -20 outside and on your way to work. Thanks for reply.