MikeHudson

MAP sensor... NOPE!

Going to have a go at Murd0x suggestion now!

jkelley

Honestly your symptoms are something that is fairly common with this car and I believe that the people who do the items on that list, 9/10 of them solve their problem.
Best of luck.

Make sure you clean the IAC the correct way. I think this involves taking out the valve mechanism and cleaning it separately. If you just spray carb cleaner/whatever in there it dissolves the junk and moves behind the valve where it re-crystallizes and you get the same issue in a couple of weeks.

MikeHudson

NEWS FLASH

IAC valve removed cleaned and put back on.

Just taken it for a 1 HOUR test drive. Didn't hesitate once. Revs sounded a tiny bit wobbly at idle once or twice.

Arriving home and parking the car the revs DID dip right down while I was nudging it about positioning it on the drive way. The drive way is a really uneven surface though not sure if that would have an effect?

Either way, letting the car cool down for half an hour and I'm going to take it out again.

PROBLEM POTENTIALLY SOLVED. Will report back shortly.

iamxpl

hope you read the proper way of cleaning it.

MikeHudson

NEWS FLASH - PROBLEM NOT SOLVED.


After cleaning the IAC and resetting the ECU, it drove perfectly for about 1 and a half hours and the symptoms have returned. Not happy

Starting to give me a real real head ache now

Bliss

Did you put some kind of intake tube and filter on or is it still just a filter clamped to throttle body?

If you just made something can you take a picture of what you have?

I would stress to first get some kind of intake tube on the car that was made by some pro's K&N or OEM whatever. Then step by step move on. There was a few people that had obvious issues with your air filter mod or whatever you want to call it.
Heat soak was mentioned and seems to me as your car warms up it craps out.

It would be safe to say you have more than one problem looking at the picture you provided. So take your time.

s2000maniac

Like I said cleaving doesn't really help. Gotta replace the whole thing like I did.

MikeHudson

SOOO...

The car went to Honda today for a 'problem diagnosis' .. Basically, they didn't have a clue and by the sounds of it, didn't really want to know. The general idea of what they said was to take it back to them when I've returned it to standard.. Great!!!

They plugged it in, the only code they found on it was P0138 HO252 if that sounds right? Post cat sensor which I'm assuming is just being tripped as a result of the aftermarket exhaust? Can't imagine that would be causing me these problems?

They also suggested the valve clearances probably need adjusting (already knew that), again not sure the symptoms point very strongly at that either though.

MikeHudson

Yeah definitely putting an OEM air box back on it. Hasn't arrived in the post yet though

That said, how warm the car is doesn't seem to have an effect on whether the symptoms are present or not.

If it's during a period when the car is playing up, it does it 100% whether it's cold start or warmed up. In fact sometimes I've felt it's most severe while it's cold? :/


I hope you're right, I think along with the OEM air intake I'm going to try a replacement IAC. A couple of people have looked at the IAC on it and have said it looks to be working fine... Is it something that they should be able to tell with the naked eye? Or does the fact that it looks fine, not necessarily mean it is fine? Have you got your car back on the road to find out if the new IAC has been a definite fix for yours yet dude?

s2000maniac

Yea you can't tell if it's bad just by looking at unless you open it completely. My issues seems to have gone away. No more shaking and no more turning off .