Idle surge untill fan turns on

[91_ECLIPSE_GSX]

Sorry i Know this is on here my case is slighty different.

i have a 91 gsx i got it in march. i used to have to let it warm up or it would surge untill it was at running temp, sometimes turning ac on would stop it temporarily. i removed the throttle body and cleaned it really well, i replaced the gasket. the biss is all the way down idle stays between 750 rpms to 1100 rpms changing after it idles for a second. i tried grounding the ecu and timeing thing didn't change anythig.

just recently the surge would sometimes stay or come at random. it will stop when fan turns on a/c doesnting effect it much it just drops the idle for a second. i thought maybe the tps was not adjusted right i removed the throttle body again and adjusted it and installed an egr block off. after reinstalling everthing the problem worsend the idle surge was faster and sometimes idle would go up to 3000 rpms.

i have tested tps the ohms seem to change smoothly and are close to the range the manual says. the idle switch is good, the switch by the throttle cable. the isc seems to be alright one coil is at about 100 ohms im going to replace it. disconecting it doesn't change anything, disconecting the idle switch sometimes raises the idle.

after putting the egr block off on and adjusting the tps when trying to adjust the idle something made a ticking sound i believe it was the egr valve solenoid. i just plugged the vacuum lines going to it. i am doing a vacuum leak test today or tomorrow.

Sorry its so long, any help would be great i am confused i have read alot and don't want to just start throwing money at it.

 

[91_ECLIPSE_GSX]

Also The Person That Owned It Before Me Put A Switch On The Maft Harness I Believe To Where The Waste Gate Solenoid Went Anyone Know What That Would Be Or Do. Ill Check The Wire Tonight To Find Out The Color.

 

[91_ECLIPSE_GSX]

i have fixed the idle surge by replacing throttle body shaft seals i also rplaced the injectors seals. the idle isn't perfect and its slightly high(1400) moves slightly. any thoughts? my tps is adjusted right the ohms aren't in the right range though. also my isc ohms are off on one coil could that cause a high idle?

 

[91_ECLIPSE_GSX]

alright i was wrong some how the throttle switch(switch by throttle cable) went crazy and my idle surge stopped. thats also why i had the high idle. i have messed with the isc i think it may be bad i have disconnected it adjusted it put it back in with out reconnecting still surges. could it still be the isc? i need help badly! could the coolant temp sensor cause the surge? the only thing that fixes it is having that throttle switch disconnected or when its wigging out.

Also i did a vacuum leak test it leaks past pcv valve and the valve cover vent. i plugged the hose to the pcv and it still leaked out the vent. when i plugged that it still leaked somewhere but extremely slowly. please any one that thinks they can help?

my car has always reved up like 500-1000 rpms every time i shift before it drops to idle or i go on the gas. so even if i push the clutch in to stop it revs a little then goes to idle. any one know why?