MAF Sensor Problems...

[chchsti]

Brought up the fault codes on My '97 v3 WRX STi and got 23 - Maf sensor fault. It's been doing this weird thing where occasionally i'll start it up and it will idle at around 1100rpm until i turn it off leave it and come back and drive it later... Also makes a winding down ticking noise for a few seconds when i turn it off...?? Car has a well used k&N pod filter, just wondering if anybody has had this problem, how to fix it etc, how much ill be looking at if i do need a new sensor, and if anybody has a factory air filter box, i'm presuming pod filters kill the maf faster than an original box would? Cheers, any help at all is much appreciated!!

[Pappu1]

The winding noise could be the turbo winding down

Few Ppl here Inc me have that noise. Dos not seem to affect performance so j guess don't worry

Knn filter is usually oiled type and it's the oil that kills the maf

Perhaps remove the Knn and put a foam type for now

For Maf umm try Crc Maf cleaner. Have heard 50/50 positive on it so hopefully that can solve ur issue n at least it's not as xpensive as a new maf

Reset ecu - battery of for half hour to an hour ought to reset it

Failing the Maf cleaner, there is a threa here on how to resolder the Maf joints as on thT model they seem to suffer from a case of dry joints. If u handy with a soldering iron then it may be the next step

Hmmm as a test if u cN trCk down a club member on ur area u can swap afm and see if makes a difference before buying a new Maf ay bro

[chchsti]

Definitely not the turbo its never done it before and would be unhealthy as hell if it was. Sweet that would explain, came with the car, never been a fan of them, really hoping someone has an original airbox... Heres hoping the crc works then! And also shouldnt/couldn't i just reset the ecu error codes by plugging the green wires under steering column together, driving over 12kmph etc etc instead...? Cheers.

[WRXONP]

 chchsti said:

Definitely not the turbo its never done it before and would be unhealthy as hell if it was. Sweet that would explain, came with the car, never been a fan of them, really hoping someone has an original airbox... Heres hoping the crc works then! And also shouldnt/couldn't i just reset the ecu error codes by plugging the green wires under steering column together, driving over 12kmph etc etc instead...? Cheers.

bro whining when u turn the car off is normal for VF23s and VF22s...theres a thread on here about it which i started and everyone on here with a vf22 or 23 has the same whine...even mine does

[chchsti]

Its not a whining its a ticking, kinda like when your battery is flat, but winding down... It has never done this before, only when it does this random over idling shit.

[WRXONP]

like a solenoid ticking kind of sound? or a relay ticking?? have u checked the battery terminals? for looseness and dirty connection?

[chchsti]

Kinda! Hard to explain haha...

[Pappu1]

I find it easier and more sure to reset ecu with power down

U can do the green plug thing but end of the day a hard reset is only through power down and that's the one I Wud only recommend as has 100% worked for me alwYs

[chchsti]

Oh awesome, cheers!