problem

[xex 343]

off and on for the last two months, when trying to start vp calais. While turnng the ignition over the engine trns over but then cuts out.
(if i pump the accelerator, it will keep reving until i take my foot off)
If i keep turning it over without reving, after the sixth try it will barely idle at about 500 revs, and then the revs build up to about 800.

Any suggestions. Please help............

[samuels]

off and on for the last two months, when trying to start vp calais. While turnng the ignition over the engine trns over but then cuts out.
(if i pump the accelerator, it will keep reving until i take my foot off)
If i keep turning it over without reving, after the sixth try it will barely idle at about 500 revs, and then the revs build up to about 800.

Any suggestions. Please help............

do i diagnostic on it....sounds like it maybe MAP sensor,crank angle sensor IAC valve....