hey there so the last couple of days i noticed my 93 stock del sol around 225000km not really driven hard sol do this weird thing. Whenever im in idle and just waiting for the light to turn green and the engine is already warm, my revs suddenly drop to 0 and then jump back up. my normal rev is about 900 800 but then it drops to 0 then flickers. does anyone know whats going on?. i can feel the engine dieing on me then starts back up. but when im driving it feels okay.=( help as well does this happen to you guys? first time hearing it?

 

are you throwing a CEL?

 

mmm no the engine light doesn't come on.

 

sounds like it could be a TPS (throttle position sensor) or IAVC sensor going bad. have you adjusted anything on the throttle body at all?

 

mm nope havent really tampered with stuff. but ya i think it may be a sensor as well.. even though i dont know much about this stuff.. thanks. ill try to bring it into my uncles shop see what he thinks. mm if the engine light doesnt turn on the cost of fixing it wont be too bad? lol

 

its hard to say cost. if it just a sensor it should be a fairly cheap and easy deal. i would check all your sensor connections as well and make sure they are all snug.

 

x2 for the TPS get it checked

 

IACV - Roaming/Surging idle when the engine is cold

FITV - Roaming/Surging idle when the engine is warm

Air in coolant system as well? Check out this thread https://honda-tech.com/forums/showth...highlight=fitv

Clean out your IACV and tighten up your FITV....hope that helps

 

+1

 

ignition switch or fried ecu(doubtful). If i remember correctly, if its the ignition switch you wont throw a cel.

 

If the IACV Idle Air Control Valve, your idle wont go to 0, it will surge some where between 800 to 1800 over and over.

 

I had same problem with IACV, had to change it.

 

All the sensors are pretty straight forward to change out, and the junkyard shouldn't charge you much, or maybe my local yard just likes me.

 

hmm well it does it when the engine is warm. but especially does it when it rains?...vancouver....**** weather=(