low rpm idle at startup

[PittsburghCeli]

Recently when I start my car, it starts fine when it's cold because it will idle high until it warms up, but if I start it while it's warm the rpms drop to about 500 barely idlling and if I tap the gas a couple of times the problem goes away and it idles normally at about 700.

I recently also replaced the o-ring on the distributor because it was leaking oil. I reset the timing twice. It is hard to get an accurate reading in the dark, looking at a little timing mark 3 feet away, but I am sure it is at 10 BTDC.

New wires, new thermostat, air filter could be a little dirty, other than that, I am thinking it might be an oily sensor or something else?

[GTcelica22]

i know this a really old post but did you ever find what was wrong with your car? i'm having the exact same problem and every other thread i find with this problem is incomplete with no resolution.

[PEN]

Hey bro I'm new to this kinda car but know a good bit of things about cars in general.

Some causes:
*IAT sensor (on the intake tube it plugs into the intake)
*dirty injectors (not too likley)
*your car in ur sig looks turbo'd so check for loose pipes/intake or anything, happened to my turbo car ran some crazy rpms randomly
*more than not its something loose like your intake or a sensor starting to go bad

Hope this helps a bit.