Hi Guys,

I need some feedback on whether or not I need to drop more money at the local dealership for a new MAP sensor or IAC valve.

I feel that I have tried almost everything when it comes to correcting my idle issue

1) Cleaned the IAC valve out completely
2) Did the MAP whack
3) Replaced my spark plugs (I had to do this anyways)

What else am I missing? Is there something I should still try?

These symptoms are still driving me CRAZY
1) Idle still falls under 800 rpm when in traffic.
2) Idle is unpredictable, sometimes it is 800, 900, and/or 1000 rpm at idle.
3) When A/C is on the car is even more susceptible to the idle feeling that it is "dieing"/ or going under regular idle speeds.

Am I going crazy here or is this just regular Honda S2000 behavior? Could this also be caused by vacuum lines not being installed correctly?

 

This is my second ap1 and they both do the same thing...also new plugs etc. it seems to be quite normal behaviour...

 

I had the same problems - and a new map sensor fixed mine. The genuine ones are quite cheap off eBay and a 5 min job to replace. If you've cleaned the iav I think it's the next logical step in fixing problem.

 

My 2001 does the exact same thing; has been for the past two and a half years of ownership. The car never stalls, so I don't worry about it too much.

 

Then the MAP sensor it is...I will order it, with a bunch of other parts. :|

Take my money...

 

Did you just wack the MAP? You should unbolt the throttle body and clean the little air channel between the TB and intake manifold that supplies air to the MAP. Takes just a few min.

 

I just whacked it by cleaning the connector male and female inputs. I'll try swabbing out the little hole, but I doubt it will help. I have a 2001, it might be time to get a new MAP sensor just by age of the car.

 

Idk, I am wondering the same. I have the same issue, my idle gets really low, like 200-300rpms and stalling out sometimes. So far I've cleaned the IAC and done the MAP whack. Next thing is going to be a spark plugs, valve-adjustment, valve-cover gasket and than see what does from there. Otherwise, next is a MAP sensor. No CEL though

 

I think it will help a lot. It's the ONLY thing that fixed my issue.. wacking the map, cleaning the connector, cleaning the IAC did nothing. You can't just swab out the hole though, the channel is extremely small. You need to unbolt the throttle body to access it. you can just reuse the gasket.

edit: mine was a 2000 and this happened to me last summer.. so, the timing is right