94 lesabre stalling after crank and cam sensor replacment

[customdrumfinishes]

1994 buick lesabre stalling,hesitaion,rough idle.
this started few months ago and got so bad car wouldnt run for long.
got the fuel filter checked out, replced fuel filter 2x. got someone to clean the throttle body out.
just got the crank and cam shaft sensors replaced thinking they were the problem. the car ran better but still had a kinda rough idle but didnt stall out etc.
today next day after sensors i got 4 feet and it turned off and the stalling etc is back but not as bad as it was before the senor replacment but still back.
the valve covers do have a oil leak, would this cause a vacuum leak?
any thoughts or anyone have this issue before?

[HotZ28]

Valve cover gasket leaks will not cause a vacuum leak. When the engine dies, do you have spark when trying to restart? You may have a bad ignition control module (ICM). Any codes?

[customdrumfinishes]

theres no check engine light on but i got someone to try for codes but none shouwed up.
the car will crank right back up , if you give it gas in park it runs great but at idle it runs alittle rough. i drove it around the block earlier and ran good for minute then stalled for 2 sec and ran fine again.

[customdrumfinishes]

when the car is in park and i floor the gas the motor goes up and down like im pushing the pedal and letting of on it fast. is this normal for a buick lesabre? some type of governor

[C man]

It's the rev limiter. It's set at about 4,000 rpm in park.

[HotZ28]

Disconnect the Mass air Flow Sensor (MAF) and see how it runs. It may be sluggish, but it will at least run, if that is the problem.

[customdrumfinishes]

ill go unplug the map sensor and see how it runs. thanks

[customdrumfinishes]

i disconnected the map and turned the car on and it ran crappy but ran, once i hooked it up while running it ran perfectly.

[HotZ28]

Originally Posted by customdrumfinishes

i disconnected the map and turned the car on and it ran crappy but ran, once i hooked it up while running it ran perfectly.

Sorry, but we are not on the same sheet of music here! Did you disconnect the Manifold Absolute Pressure (MAP) or the Mass Air Flow (MAF)?

[customdrumfinishes]

hi sorry yes the mass air flow sensor

[HotZ28]

You may have a wiring problem to the MAF, (which should be checked) but more than likely, the MAF will soon fail & will only be worth a core refund on a replacement.

[kbruzelius]

" if you give it gas in park it runs great but at idle it runs alittle rough. i drove it around the block earlier and ran good for minute then stalled for 2 sec and ran fine again."

You could pull the vacuum hose to the fuel pressure regulator, if it drips gas, replace it.