Today I went to my S2000 and started it up and it died right back off. Then I cranked it back and it missed really bad and would rev up slowly but still missing, let off the accelerator and it will shut right off. Friday night I came to a stop sign and it just shut right off and took a while to start back, but started and ran fine the rest of the night, and last night. I tried to map sensor whack but to no avail. Do you think i just need a new map sensor? I hope this is the trouble.

 

I think you should stop beating the MAP sensor up. Then take it to a shop to have it checked out.

 

So does anyone else have any opinions?

 

I agree with Slows2k. something similar happened to my maxima and it happened to be crank position sensor and cam sensor were broken. I hope it's not a big problem.

cheers,

 

dont drive your car anymore, get a flat bed to take it to the honda garage for them to have a look at it.....


how long has this been going on for ? how many miles since it started happening ?
if it has been a while then you may have a big problem as you did not look in to it when it started.

 

No, it's been working fine except for shutting off at a stop sign last friday night, started back up and worked fine til I went to crank it yesterday morning. Haven't driven it any since the problem started, can't actually.

 

sounds like the idle air control has gone bad

 

Speed4tu,

You'll get a lot of replies with possible problems and fixes, so I'll add my 2 cents worth.

I have had a similar problem with missing engine when starting up (intermittent problem) and it all boiled down to a clogged injector.

In my case adding a strong fuel injector cleaner to a full tank of fuel solved this problem, so you might want to give this a try too. Doesn't cost too much and doesn't involve whacking anything.

Take care and keep us posted,


Siepel

 

Let me get some more information and then throw another idea out to you.
First, I must assume that you did NOT get a CEL, right?
Second, has your climate taken a change towards colder mornings of late?
Next, when you tried to restart it (after it died the first time), did you try to assist it with throttle?
The following is only a possibility as I'm not there to witness what happened and what you did.
IF the weather has started to transition into colder fall weather for you, then the dying part is not unheard of. (Yeah, I know, it's still August but weather patterns the last few years have been weird.)
IF, during and/or after this dying thing, you tried to "save it" by giving it gas, you may have flooded it. (Or even inadvertently pump the gas pedal.)
IF this was the case, then once it started, it behaved just like a flooded engine (the missing and the slowness to gain a smooth idle).

My suggestion:
As long as you don't have a CEL, continue to drive the car as usual, but each morning, make certain that you DON'T touch the gas when trying to start it. If it dies, let it - NO GAS! Then "key off, key on", crank it again and let it start on its own and let it try to stabilize itself ON ITS OWN.
Come back after 4 to 5 mornings starts and tell us if it has "learned".

 

I don't know about the CEL, I have a test pipe and no air pump, so the CEL stays on all the time.
No climate change, it has been close to 100 in the days and 90's here for the past 2 weeks, be glad when this changes
Didn't try to assist with throttle on startup, but i have to keep giving it throttle for it to run.

Thanks for the help to everyone.