imported_richardl

i have a el head on a 97 ek block with a obd1 ecu with the conversion harness so the iacv is hooked up properly and it doesnt look for knock sensor everything is hooked up properly but for some reason when i release the gas pedal after reving above 2500 the rpm drops really low bogs for a second and goes back up to idling sometimes it even stall ...does any body have any ideas what it might be ... could it be the PCV? i wanna get some opinions before i start trying things let me know please any body also with this past experience would help thanks

imported_braunzcrx

IACV?

imported_braunzcrx

CTS?
FPR?

imported_chris_v2

why the hell are you just naming parts?

My first guess would be a vacuum leak. Listen with a stethoscope.. or spray brake clean on the hoses.

imported_richardl

k im going to look for leaks after work ill update

imported_richardl

i tried with some silicone lube on the hoses no bogging no change to idle so i dont think its a vacumm leak do you have any other ideas could it have to do with the dizzy?

Cynikal.Mindset

why would you use silicone lube when u were instructed to use something with flamable properties...use wd40 or brake clean or something else thats readily flamable and your idle should rise, not bog down

imported_chris_v2

im with matt.

what the hell would silicone lube do? except gum the **** out of your engine, o2 and cat?

Heres a tip, cover the iacv a bit so if there is a vacuum leak, it will be easier to source.