i did an induction clen about 2 months ago, then i flushed the radiator and heater core this w/e ,and i started having idle issues at cold it idles great then once warm it will go to about 1200 to 1400, so last night i pulled the iac and cleaned all the carbon off the valve and cleaned the hole it goes in, started the vehicle and it was great so i drove about 30 miles still great, this morning its back to over idle at 1200 , ------------ could i have something wet from when i flushed the cooling system or does anyone know what i should do next? and also i can jiggle or flutter the throttle linkage and the rpm will fall and almost shut off the engine if i keep on .

1998 disco1 111000 miles

 

Did you clean the throttle body when you did the induction cleaning?

 

Yes, you could have gotten something wet, especially with a D1, when doing a coolant flush, but iw would have dried out in a day or so so that shouldn't be a concern now.
As already asked, have you cleaned your t/boy also? You might also want to check all your vacuum lines and seals for a leak.

 

yes i did a throttle body clean again last night when i did the iac valve, i have also traced all vacum lines and found no leaks??????????? could it be the tps ? can it be tested

 

Yes, it can be tested with a good scanner or I think with a OHM meter. Might chek the Rave for testing procedures and numbers.

 

why would it idle great until engine warms up then jump rpms?

 

Good point. Wonder if the fuel pressure regulator is failing causing low fuel pressure at an idle.

 

would changing the fuel filter have any effect on pressure ,that is the only thing i have not changed/ or is it the iac valve not holding once its hot ,,,,,,,, man i have confused myself ,,i do appreciate you guys looking in it helps

 

Just went 10 miles to lunch stopped and rpm went back to normal? Anyone with an idea?

 

If the fuel filter hasn't been changed in the last 2 years, it would be a good thing to do.