this is something i haven't read on the forum yet its crazy. alright well first off i have a TII 87' before had a BAD *** leaking intake gasket in the LIM so my car wouldn't even stay on, i got that fixed by rotary performance and the car pulls ALOT harder now, but ever since i got it back when i crank her up the idle will sometimes go up to 2300 for a little while and then drop down to say like 1500 then 1700 then 1500 then 1700 and so on for i'd say a minute or so, or until you tap the gas pedal.Then after that the idle MAY stay at 1,000 for a little while then surely it will drop like its going to stall and then it wont and it will continue to do this forevverr but still drive like a champ and pull like it did from day one. I'm sure theyre no vacuum leaks because RP wouldn't let me leave with Vac leaks and i went back and had them check for them real quick and NOTHING!?. I didn't get it fixed then because i wans't sure how much more it would cost and the LIM gasket replacement was $438 ( O2 sensor, bolts, replaced some hoses). I havent got the slightest idea what could be causing this idle fluxiation. PLEASE HELP THANKS! I know some rotary gurus can step and and fix this!

 

Has the TPS been checked?

 

yep the TPS was checked a lil while ago my friend had the tool to check it and it was fine then i dont know what could have changed?

 

needs to be checked with a multi-meter, not some light bulb tool (which blows out the ECU if not correctly made in the first place.

Tool/light bulb set ups don;t show flat spots in the travel.