Quote Originally Posted by Ebenezr View Post
I did check the fuel pressure as mentioned above. It was 38 with key on and 32-34 with the engine on. I'm thinking now that may be low. Does anyone know what it should be. I can't seem to dig up this info.
Is it possible it was just checked during one of those "good" moments though?

And the downloadable manual suggests that "Key On" fuel pressure should be between 333-376 kpa (48-55 psi).

If the problem is intermittent like you described, who knows if even the comparably low pressures you read remain constant under actual load/driving conditions.