2001 Toyota Sienna Engine wont stay running

When I start my Toyota it will turn over and fire but if you dont put a little gas pedal into it the van wont start. As soon as you take your foot off the pedal it dies. I have no engine light or battery light. Also if you keep the engine reved to rougly an idle RPM and put it in gear it will stay running. I havent tried taking it on the road because I dont want to get stranded. Another thing is it will rev up. With out stalling out or hesitation. I pulled the throttle body off and cleaned that along with the idle control valve. It ran fine for 3 days and started doing the same thing as stated above. Could it be more junk in the TCV or did it crap out on me? Thanks for all the help before. Could you please help again. Oh yeah I cant get the computer downloaded. Because it is stuck at my house and I dont want it to get stuck anywhere else.

My 01 Sienna has the same problem
I checked the code reader but no error code
where IAC is located any picture would be very helpful

Thanks

I own a 2001 Toyota Sienna, it would not stay running when at Idle. Toyota put an line from the exhaust into the throttle body to help return and burn any excess fuel originally not burned the first time thru the system. On my vehicle I have taken the hose off of the throttle body down to where this exhaust line re-enters the throttle body (right at the butter fly valve in the throttle body). I cleaned the carbon that had built up around the butter fly valve (with carburetor spray cleaner) to remove the carbon. Reassembled the disassembled componets. My vehicle then idled properly. Other wise you must keep the vehicle above an idle to keep it running. When you had to stop or slow down and the idle dropped low enough the engine would die. After cleaning it has worked fine. I hope this help other Sienna owners.