Engine stalls when put into Park.

[mischf]

HELP please!

I put a new radiator in my car the other day. Since then, when I stop the car and put it into Park, the engine stalls. I've noticed the idle speed has dropped a bit cause if i tap the accelerator when putting it into Park the engine stays on but when i take my foot off it slows right down and sounds like it's gonna stall again. Its starts fine. What's going on?? Are there different idle speeds for park and neutral? How do I change them?.

Thanks.

[mischf]

This problem has stopped now....

I didn't do anything it just happened for a couple of days now it's gone.

[genIIIbandit]

try cleaning the throttle body, around the butterfly with carbi cleaner on a rag

[mattman]

idle and neutral will run differently... but yeh tb would be the first port of call.