idle issue?

[emolineaux]

ok i notice this yesterday and it did it again to me today. i was driving my 98 z and i came to a stop and it usually idles at 1000rpm but yesterday and today it would drive fine and i would come to a stop and it would be idleing at 1500 after i shut the car off for a bit i come back to it and shes fine. any ideas?

[sweetbmxrider]

hmmm, cold? i would get a scanner at look at the datastream.

[emolineaux]

both times its done it its been at op. temperature. maybe idle air control sensor getting stuck?

[sweetbmxrider]

could be some crap built up in there. could be a number of other things though. best bet is to get a diagnostic tree and go step by step rather than guessing and chucking parts at it. i was thinking TPS but thats just a thought, voltmeter it up!

[emolineaux]

well i have a cel for the stupid fuel tank sensor that i have but havent replaced yet. ill throw my scanner on it tomorrow to see if shes throwing another code

[sweetbmxrider]

yeah that would be the best way to start. what sensor in the tank?

[emolineaux]

its the fuel tank pressure sensor. its up on top of the fuel tank. i dont feel like dropping it down to replace it lol. i have the sensor sitting on my entertainment center i just have to do it