TxDox21

About a month ago I replaced the fuel filter thoroughly cleaned the Throttle body, MAF, cleaned the air filter and then reset the computer on the 4Runner and it ran better than the day I got it. A week ago, I noticed that it was idling a little low around 600 rpm in drive.

Today I decided to look at the throttle body to make sure it was still clean and it is. I then disconnected the battery to reset the computer again to see if it helped. Now I get the following rpm readings

In park w/ Air cond.: 900(normal)
In Park w/o air Cond: 500-700
In Drive:400-700

My RPMs are all over the place. I drove about 5 miles on it and when I would come to a complete stop, the rpm would go down to 400 and I would have to give it gas to keep it running.

Anyone have any ideas on what is happening? My $runner has 85,000 miles

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2002 4Runner 2WD
Current Mods:
Hella FF75 Driving Lights, Manik Nerf Bars, K&N Filter Charger, Aiwa Head Unit, Infinity Components and speakers, Infinity Basslink, MagLite Mod, Wagner TruView Headlamps, Firestone Destination A/T Tires
Future Mods:
4WD coils(Need to be installed), Seat Covers and Fog Lights