problem is getting worse, engine does not wind up smootly anymore, has almost 60 miles on it and the cel came on with a code po172 too rich??. any help would be great thanks

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hotrodray &raquo;</TD></TR><TR><TD CLASS="quote">problem is getting worse, engine does not wind up smootly anymore, has almost 60 miles on it and the cel came on with a code po172 too rich??. any help would be great thanks </TD></TR></TABLE>

60 miles total on the odo or it's been 60 miles since the problems started?

 

map sensor?

 

It has 60k miles on the odo, and i've been seaching and reading about map sesor whacking, is that the suggestion or should i just replace it
thanks guys

 

60K is quite different than 60 miles. Let's see... have you done routine maintenance on the car? For instance, valve adjustments? If not, this could very well be your problem. But the CEL is different. You can try resetting the CEL with the fuse (NOT the battery terminals!) and see if it re-trips itself. It could be serious, it could be a fluke. This is a way to diagnose the issue with no diag ODBII tools. You can find the jumper (sorry it's been a while) on S2ki. It used to be in the library but isn't at the moment.

 

hi, i did reset the cel with a scanner and have driven about 40 miles without it coming back on, but still can feel some power issues, also to the best of my knowledge there has been no valve adjustments made, as i have not had it since new.
thanks for all input

 

rough idle can be cured with a valve adjustment. but knowing if you've had one, not sure. I'd take it in, ask for one, which will run several hundred for labor (or you can do it yourself in &lt;4 hours with the right tools) and ask them to check into the Map sensor. however, that's just going to stall on occassion. what about the basic stuff: air filter?

 

thanks for your info Mr.Bagel,
heres a little update, i went out and lightly tapped the map sensor and the engine seemed to change instantly (smoother ??) i'm going to take it out for a ride to see. i did alsocall the local honda dealer about the vavle adjustment and they told me it would be 2-3 hours, but ready=they also told me they have not adjusted an s2k yet, doesn;t insure much confidence.
thank again will update later

 

the map sensor - it's a strange piece. what happens is little bits of dust and anything else that passes through that point, collect up on the sensor itself. when you tap it, you are just freeing the sensor of those particles so it can read clearly again.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mr. Bagel &raquo;</TD></TR><TR><TD CLASS="quote">the map sensor - it's a strange piece. what happens is little bits of dust and anything else that passes through that point, collect up on the sensor itself. when you tap it, you are just freeing the sensor of those particles so it can read clearly again.</TD></TR></TABLE>

I'm happy the problem was solved but I don't agree that the map sensor gets "dirty" and the tap clears it from dirt. If you follow the air passage to the map sensor, it's very comlicated and has no outlet. There is a very small chance or tendency for dirt, oil vapor, or anything to get up there and get into the sensor.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vapor &raquo;</TD></TR><TR><TD CLASS="quote">I'm happy the problem was solved but I don't agree that the map sensor gets "dirty" and the tap clears it from dirt. If you follow the air passage to the map sensor, it's very comlicated and has no outlet. There is a very small chance or tendency for dirt, oil vapor, or anything to get up there and get into the sensor. </TD></TR></TABLE>

Sorry you disagree, but this is the actual problem and solution, which is the reason why you tap on the map sensor to get it working correctly again. The "small chance" you mention happens. This is why it isn't apparent all the time, nor is it apparent on all S2000s from various locales.

 

just a little update, i drove another 50 miles and so far so good. i'm on my way to the dealer to pick-up my new plugs( which took them 5 days to get in ) .
thanks again guys,

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mr. Bagel &raquo;</TD></TR><TR><TD CLASS="quote">

Sorry you disagree, but this is the actual problem and solution, which is the reason why you tap on the map sensor to get it working correctly again. The "small chance" you mention happens. This is why it isn't apparent all the time, nor is it apparent on all S2000s from various locales.</TD></TR></TABLE>

I don't disagree with the solution. I have a problem with the explanation of the map sensor malfunction. If you can prove to me that dirt/vapor gets trapped in the map sensor, I'll name you an engineer. The throttle body used on the s2000 is the same as the Integra Type R. Is the ITR plagued with a map sensor that needs tapping? The air passages on the ITR t-body are the same if not similar, where the difference is between the intake manifolds. I don't agree that the reason the map sensor needs to be tapped is b/c of dirt/oil vapor getting trapped into it. There's no air outlet in the map sensor for air to flow to it and then out of it.