Dan1987

Evening,

Does anyone in the Towcester area have any sort of diagnostics equipment?
The last three days driving back from work my engine management light comes on, never in the mornings though. my suspicions are the MAF and the intake temps. Im using a CAI with the front duct removed, so i imagine the MAF is crying about the intake temps due to these extreme weather conditions (but then i would of thought it would occur in the mornings too, seeing as the temp is generally colder at 7am). Other thoughts are a loose connection to MAF.
Going to remove the bottom section of intake tomorrow and relocate the filter to the top section untill these baltic conditions pass.
So if anyone has any fault finding equipment in the area please let me know as im getting bored of resetting the ECU to clear the CEL.

Cheers

Dan.

s2konroids

First thing is you'll have a job finding the MAF sensor (air flow), we have a MAP sensor (pressure) .

You can monitor it via an OBD2 tool, it will be around 40kPA crusing at a stead speed steady revs - so its important to hold it.

The ECU should learn the new temps etc from the short term fuel trim no problem - so i doubt that will cause a CEL.

Best to get the code read first.

Dan1987

I think the pre DBW cars have MAP's but pretty sure my 07 has a MAF as its located infront of the TB. I believe its one of the ones that measures airflow by the temp, similar to the way the ye olde hot wire types work, but using a probe rather than a wire...
Well if its not a MAF, im struggling to think what else it could be.
Could be wrong though. not really looked into the sensor arrangements on the various s2k's

Dan.

s2konroids

Pretty sure none of the S2000 have MAP sensor there all MAP.

I think your getting confused with the IAT sensor, 'Intake air temperature' sensor guages how hot the air is as it enters the engine, a MAP is for monitoring manifold pressure.

So a MAP sensor is different to an IAT sensor.

The MAP sensor will still be located ontop the intake manifold.

Dan1987

yeah perhaps, where abouts is the OBD2 port by the way? passenger footwell or something?

s2konroids

Passenger footwall, right knee just under the dash.

MB

Presume it's under warranty?

Dan1987

well yeah...it would be... not standard so not sure how honda would view it to be honest...im pretty sure its temps related... unless its detting (which i highly doubt( i cant hear any det)) with the -5 degrees C oxy rich conditions