Buick lesabre stalling while driving.replaced cam crank and mass air flow sensor fuel filter pump oil filter.plugs wires are old the coil as well.could that cause problem?

Yes, old spark plugs, wires, and a coil are very likely culprits for a Buick LeSabre stalling while driving. Even with the other components you've replaced (cam sensor, crank sensor, MAF sensor, fuel filter, fuel pump, and oil filter), a faulty ignition system can cause the engine to misfire, lose power, and ultimately stall.

Here's why:

* Spark Plugs: Worn plugs can't reliably ignite the air/fuel mixture, leading to misfires.

* Spark Plug Wires: Damaged or worn wires can prevent a strong spark from reaching the plugs, causing misfires.

* Ignition Coil: A failing coil may not provide sufficient voltage to the spark plugs, resulting in weak or absent sparks.

Since you've already invested in other repairs, replacing these relatively inexpensive ignition components is a smart next step in troubleshooting. It's generally recommended to replace all spark plugs and wires at the same time, and the coil should be addressed if it's old or showing any signs of wear (cracks, corrosion).

Before replacing parts:

* Check for Codes: Use an OBD-II scanner to check for diagnostic trouble codes (DTCs). This can pinpoint the specific problem area. Even with the parts replaced, there might still be a code stored.

* Visual Inspection: Inspect the spark plug wires for cracks, damage, or loose connections. Look at the coil for any visible damage.

Replacing these ignition components is a much more cost-effective troubleshooting step than guessing at other potential problems. If the stalling persists after this, then you can consider other possibilities.