When I get out of gear, and go into neutral as I'm coming to a stop, the RPM's drop to almost zero, and sometimes the car stalls out . . . If I shut off the car, and restart it, the car will idle fine until I get back into gear and drive for a bit, as soon as I go back into neutral, it happens again.

I've replaced the spark plugs, MAP sensor, and idle air controller valve . . . and I still have this idling problem . . . it might have even gotten worse!!!

What else could be the problem? I haven't been able to detect any vacuum leaks, but I supposed there could still be one somewhere. Could it be the injectors?


The car is going to be parked for 3 months this summer and if I don't get this problem resolved before then, I'm probably just gonna sell the damn thing.

Any help would be greatly appreciated!!

 

did you clean the map sensor channel through throttle body?

 

No, this could be what I try next though

 

you should try it, my similar problem was solved after doing this

 

I few friend with s2000's put in the t1r voltage stabilizer and that seemed to help with this problem. though there cars never stalled out...

 

check the throttle position sensor?

 

i get that too but i think its my cat getting clogged up. i guess not enough back pressure. once i install my test pipe we will see if that was the problem.

 

I already have a test-pipe on my car . . . so I don't think that's it.

The car runs fine in gear, and has no problems . . . it is only when I go into neutral after coming out of gear.

I don't know if it's not getting enough air or fuel or what . . .

I've read that Injectors could cause this, but I'm not getting any misfire codes or anything



. . . got a suggestion to get some carb cleaner, spray it in there, and see if maybe it'll clear up some crap that might be clogging it up

 

I don't know if it's applicable for the S2000, but in my '01 Mazda Protege, similar symptoms were related to the EGR valve sticking...

 

No S2000 has ever had a EGR valve.