89 century stalling

When my 3.3L v6 century is warmed up to operating temp, it stalls when I lift my foot off the throttle pedal. This happens when the transmission is in drive or in park. It also happens when decellerating to a stop. It feels like the idle speed is just too low to keep the engine running. I have to keep slight pressure on the throttle when coming to a stop to make sure the engine dosn't quit.

I have replaced the mass air flow sensor, oxygen sensor, ignition wires, fuel filter, and have had the fuel injectors, pressure cleaned at a dealers shop. I have had it to two shops, and no one knows what the problem is.

please help

You will have to get the vehicle scanned, but if it has been to the dealers, I'm sure it was scanned. On this one I suspect you have a bad coolant sensor, throtle position sensor, the throtle plate needs cleaning or the tps needs to be reset.
Good Luck.

You will have to get the vehicle scanned, but if it has been to the dealers, I'm sure it was scanned. On this one I suspect you have a bad coolant sensor, throtle position sensor, the throtle plate needs cleaning or the tps needs to be reset.
Good Luck.

Thanks for the info. I will check those items, hopefully one of them will fix it.