recent tune up now high idle

[tokymon]

89 4.0 renix/auto
just installed new plugs/wires/cap rotor
cleaned trottle body
now have idle at 1750 rpm
new iac motor


where to go now. HELP

 

[motroutmo]

Disconnect the negative battery cable for 30 to 60 minutes to reset the computer.

 

[dizzymac]

Did you remove the TB to clean it and did you remove either the IAC or TPS?

 

[Dave in Eugene]

The TPS doesn't like having anything sprayed in or on it. If you unplug it and it goes down to a more normal idle that's probably your culprit.

 

[krzcwby]

Check for vacuum leaks. Maybe you accidentally undid a line while you were working.