High RPM's in the morning

[wroclawiak]

My truck revs about 2000 rpm's in the morning when started.After 1-2 miles goes back to normal.I cleaned the throttle body i had scanner hooked up ,no codes.Never problems like that before.It is 96' T100 with 116k on the clock.
Any ideas???Thanx Paul

 

[XT Toyota]

My 99 Taco with the 3.4L does rev up in the cold morning about 1500RPM. Not quite as high as you are experiencing, but just like an old school carb set-up the cold start requires higher RPM's with the richer air/fuel mixture. Pull the ECU fuse and wait bout 10 minutes. Good Luck.

 

[wroclawiak]

Thanx XT for your input.What kind of air filter you have?I will try the fuse trick.