I have a problem with my s2k i stored my car for the winter, bought a new battery installed it and started the car and the problem starts . My car keeps reving from 1000rpm to 3000 rpm up and down ,i don't know why some please past me ur knowledge thank you for your time .


Modified by ap1_s2k at 10:49 AM 5/7/2006

 

let the car run for about 15 minutes.. it needs to relearn the idle..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by papa5murf &raquo;</TD></TR><TR><TD CLASS="quote">let the car run for about 15 minutes.. it needs to relearn the idle..</TD></TR></TABLE>



Idle learn procedure.

1) start with a cold car
2) reset ECU (unplug for 30 seconds)
3) start car
4) hold at 3000 rpms until the fan comes on
5) let idle for another 10 minutes

 

so if i unplug my battery . can that reset my ecu or would i have to unplug my ecu also ?

 

im pretty sure you can actually remove a fuse to reset the ECU with out having to undo the battery.

 

You can unplug the ECU or remove the battery terminals. Either will work.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Francesco &raquo;</TD></TR><TR><TD CLASS="quote">im pretty sure you can actually remove a fuse to reset the ECU with out having to undo the battery.</TD></TR></TABLE>its teh 7.5amp "back up fuse" under the dash

 

ok, jut a thought, have you tested the oil and gas? Just wanted to check.

 

ok ,I reset the unplugged the ecu and the battery, rev the car to 3000rpm and the idle has drop to 2500rpm but it still jumps up and down ??

One more thing i just now notice , when i start my car it ildes to 3000rpm until the fan kicks on then it starts to jump up and down 1000rpm to 2500rpm ,can u guys please help me??

 

i changed the oil before i started the car and the gas should be good still ,also i put a little of fuel cleaner just to be sure there are no plug gas lines .I always check everything before i start the car but this, i have never came across before.

 

WOW I DIDNT KNEW THAT THE S2000 NEEDS TO LEARN TRICKS....THATS KOO

 

MAP Whack! Unplug MAP sensor. Tap it with the handle of a screwdriver. Remove the 2 bolts that hold it down. Pull it out and check it the port is clogged/dirty. Clean/reinstall. Reset ECU. Do idle learn.

 

no mice/rat droppings in the engine bay where a vacuum line could've been chewed through?

 

Hey guys, got the problem firgued out it was i IAC(idle air control) valve it was clogged so cleaned it and started up ,and runs like new .So thanks alot for all your time helping me out !

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ap1_s2k &raquo;</TD></TR><TR><TD CLASS="quote">Hey guys, got the problem firgued out it was i IAC(idle air control) valve it was clogged so cleaned it and started up ,and runs like new .So thanks alot for all your time helping me out !</TD></TR></TABLE>