[Shotimes] still having an engine problem, part 2

[van Oss]

I swapped the IAB just because I had one.  No fix.  Drove fine for a couple
of minutes, then back to bouncy idle and stalling.

This morning at the Schraeder valve there was zero fuel pressure.  Once I
turned on the key, there was fuel at the valve.  I don't have a gauge to
quantify the pressure, but there was fuel.  At the moment the engine stalls,
I can here the fuel pump going through its 1-second priming routine.

When it strands me, the way to restart it seems to involve pressing the
pedal all the way to the floor (I have heard this turns off the injectors).
There is a definite gasoline smell at this time.

Please send me ideas!  Thanks!

Joseph



----- Original Message -----
91 mtx 3.0L, 140K, 73mm with Breaux LPM.  Within less than 10K I have
replaced most sensors, IAB, fuel pump and filter, and did all 60K except
valve lash.

Intermittent problem for the last few weeks.  Gradual onset.  One time
you'll start the car and it will fire immediately, and run smoothly.
Another time, it'll crank forever before finally starting.  You'll wait at a
stop light, the revs will pop up, you know you're in trouble.  When you try
to take off, the engine sputters and dies.  No codes.

IAB?  That might explain the revs coming up weirdly?

Crank sensor (gawd I hope not)?   I thought this one was sudden death.

Cam sensor?  Often associated with long cranking before start?

Multiple problems?  Could it be IAB and fuel filter?  Should do filter just
to rule it out, I suppose.  My hunch is crank or cam sensor.

Joseph van Oss