i got a b16 turbo. when i start my car up. it idles fine but after about 5 mins. my car will idle around 1400rpm. will not pass 1500. which means im running rich. cuz my car is not tuned. but my problems is dat after i drive it on the road and come to a stop or let it sit for a bit. it idles low and then high reall fast . drop to low as 650 high to 900 then it goes back to 1400.
wat coupld the problem be? is it because my car is not tuned or is it normal

 

you may need to clean out your injectors there could be a slight clog so that pressure will build up in your gas line then release all at once. Try just cleaning out your whole header

 

new fuel filter? fuel injector cleaner? and try to clean my turbo manifold u mean?

 

check the filter if it's good try some cleaner or pull it off and use an air tool to blast it clean but don't use water leaving any in there wouldn't be good

 

Bump this thread if anyone else has some ideas help this guy out

 

It's not a fuel problem. Injectors don't go bad.

Your lack of tuning is one of your problems and the other is prbably the IAC.

 

thats wat i was thinking. injector shouldnt go bad, so basicclly is i gotta get it tuned and adjust the map for my fuel and air ratio?

 

check you vacume lines

 

they all good, . and when i dont drive it, it idles ok. but when i start driving and come to a stop, it idles so low it sounds like my gas r gone and gonna shut off

 

Oxygen sensor maybe?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDM-97CX &raquo;</TD></TR><TR><TD CLASS="quote">It's not a fuel problem. Injectors don't go bad.

Your lack of tuning is one of your problems and the other is prbably the IAC.</TD></TR></TABLE> Are you kidding? I've had to change injectors to get my buddys car to run right. Injectors can go bad! Try getting it tuned, see if you still get the same problems.