'91 Crown Vic stalling

It only stalls when warm at idle but if I put it in neutral no problems. Just recently replaced the rear axle, water pump, and thermostat. Plugs and plug wires have not been changed recently and only started stalling and missing within the last couple of weeks. Thanks.

Have replaced spark plugs, sp wires, distributor cap, & rotor button since last post. Starts up now but stalls as soon as you let your foot off the gas. Getting ready to replace the fuel filter. All these items were in need of replacement anyway. Appreciate any suggestions or ideas.

Do not forget to check or clean the Idle Control Valve

sounds like a vacume leak. spray carb cleaner aroun the engine while its running . if it smooths out then you found a vacume leak

Forgot to mention when we pulled plugs yesterday that cyl 2 plug was wet with gas, only one of the 8. Don't know if that would make any difference or not.

Checked out the IAC and it's good. Next were gonna check the TFI module as I've had about 2 or 3 people suggest that.