98 t/a idles high

[heath26]

after it warms up it still idles at 1200 to 1500 anybody have any ideas not throwing any codes

[pajeff02]

Either a vacuum leak, a loose intake tract connection after the MAF, or a dirty IAC. Just a few possibilities. Check the PCV hose on the passenger side of the engine where it plugs in -- that litte hose tends to crack apart.

[heath26]

whats the IAC and where is it

[pajeff02]

IAC = Idle Air Control valve -- it's on the side of the throttle body, has wires going to it. Adds and subtracts air from the intake charge at idle to hold the rpm where it needs to be.

[heath26]

kinda looks like a valve with a rubber end thats supposed to open for fast idle and close for warm idle