lopey idle at SOME starts

[CsChuck14]

ok, first post, but ive been looking around for someone with this problem and cant find anything. First off i live in alabama and the temp has been around 80-90 during mid day. usually when i go out to my 97 psd in the morning and crank it most of the time i can count on it to start and immediatley idle like a 1969 dodge charger with a lopey drag cam. Then i press the pedal a little, and get it to idle steady at about 1.2k RPMs for about 4 to 5 seconds, any less and it will go back to lopey idle. and after i do it for about 5 seconds and let off the rpms drop and it "chugs" at about 700 to 750 rpms then rises a little and smooths out. i then usually drive away and its fine. Then i park. i have parked for 3 hours, started and it was fine but i have also stopped to get gas while the engine was warm and when i started 4 mins later it did it. it seems very random and i only could guess that its got something to do with a sensor or the computer, or dirty fuel/air filter, which im going to change out tom to see if that does it. thanks for the help.

[twildman]

Unplug your ICP sensor and see if it continues to do it, you will get a CEL but don't worry about that.

Also what oil are you running and when was it changed last and is it full?

[h2odrx]

so lopey idle is oil presure related?

[bryan.d]

Here is for ya. I have been having a similar problem.

[planeoldguy]

I've had a small rump rump thing for the first 10 seconds or so since getting the new HPOP, nothing extreme though.