3.2 Cold Start Rough Running

[drola]

I have a 3.2 that has had cap, rotor, wires and plugs replaced within the last 200 miles. but upon cold start it runs pretty rough. once it warms up it runs fine.
before i go tearing in, what do you guys think i should look at first? maybe there is something common on the motors that would cause that.
i was thinking o2 sensor, cht sensor, sweep arms inside afm, idk. just ideas
thanks

[Nick Triesch]

First thing, re torque your intake runner bolts. They get loose over the years. Allows air to get into the cylinders causing tough starting.. you will need a foot pound torque wrench from harbor freight. And the correct size allen to go on the wrench. Cheap! I think the torque is about 18 foot pounds but double check.

[Nick Triesch]

Then check for vacuum leaks.

[drola]

thanks. yes i thought about vacuum leaks also

[stlrj]

Easy vacuum leak check with carb cleaner sprayed at base of manifolds while at rough idle.