2000 Windstar stalling/idle too low

[toolman1]

I have a 2000 windstar and it has been stalling out when I start it. I have to keep foot on accelerator to keep it going. It does this in idle and while driving when I slow down or stop the RPM's go below 500 and the battery light comes on and it dies. It always starts back up but I have to keep foot on accelerator to keep it going. I have read it may be IAC so I cleaned that, but no change. I read maybe vaccum leak, but don't know where to start looking for that. I read PCM power relay or Fuel pump relay, or Throttle position sensor, or Idle speed control actuator, or MAF dirty. Is there a way to narrow it down? No CEL comes on. I haven't checked codes because no CEL. Please help if you can.

[theman100]

vac. leak. get a can of carb spray or brake clean and spray all over intake and hoses, when idle goes up, that is where the leak is...

[toolman1]

Thanks so much for the quick reply. I found the leak. It was Part # XZ2Z-9E498-DD the U-shaped Vacuum Line. It is right in front and if it was a snake it would have bit me. The boot was on but was loose so I checked it over and over but didn't realize it had to be snugger. When the van was on it would suck it into place but would still leak around it. I cut a piece of rubber hose and slipped that over the nipple and shoved the boot back on. Wa-la no more problems. It is such a relief not to have to start changing parts to find the problem and this repair didn't cost a thing.