Help (MAS or MAF sensor)

[Usting]

Parang namamalya ang acceleration ng car ko ngayon at sometimes ang RPM ay ayaw umakyat ng mas mataas sa 4500rpm, kase-service lang few months ago with new plugs. Idling is okey pag lang nirerebolusyon parang nagmimiss. Sabi ng friend ko karaniwan daw ay yong mass air flow (MAF or MAS) ang ganitong symptoms. Tanong ko lang, meron na ba sa inyo ang may karanasan na with this problem? Pag ba nag-fail ang MAS or MAF kailangan na itong palitan or pwede bang linisin lang to, baka madumi lang. Its for a W202.

[GlennSter]

usting, it can be the maf sensor, but never mess up with it.it's a very expensive experiment pag nagkataon.let the casa do it for you.

namamalya?anong spark plug kinabit mo?

[Usting]

thanks GlennSter, kala ko kasi pwede ko munang remedyohan bago ko dalahin sa kasa. Lalo bang nasisira to pag tinanggal mo at linisin. Ang plugs na ginamit ko pala ay NGK.

[GlennSter]

ngk na stock lang ha?check din the tension wires..baka may tumatalon na na kuryetne...actually, madaming pwedeng problem..

hmm..some use pressurized air to clean the maf...id rather be on the safe side...kasi pag nasobrahan ng buga..may masisira na sensor..yari!!!expensive mistake talaga.

[lemarv]

just use contact cleaner, the fast dry type......

[GlennSter]

there are instances kasi na nasisira ng contact cleaner ang maf...

you can try but i wont recommend it

[vinj]

Whats your car BTW?

Check first the following:
- air filter
- spark plugs (is this OEM to your car?).
- fuel filter/system
- sparkplug wires

[orly_andico]

contact cleaner should be OK, but CARB or THROTTLE BODY cleaner is not.
is it a "resistive wire" type MAF or a vane-type MAF? yung resistive wire ang pwedeng i-contact cleaner. You have to open up your air intake though para makita. It should look silvery. If it's brown or black..... bad yun. :P

Very expensive pa naman ang MAF. Kahit sa Jap car 5 digits ang cost nun (new). I assume you are using a Benz? pa-casa mo nalang. Katakot.

[Dr.FunK]

I got this experience with a siraniko that destroyed the MAF on my Sentra. Sinundot nya ng screwdriver yung sensor. Pagkatapos nyang sirain, hindi na lumalagpas ng 2400RPMs ang tsikot ko. I brought it to the CASA (NGQA) and they said ang replacement is 10.5k wala pang labor. Pero I talked with people sa Banawe and found a replacement worth 8k lang. Natakot lang ako kasi yung kausap ko tipong tambay lang sa banawe. I took the risk, pero ok na yung car afterwards. Sarap marinig yung dating VROOOM ng tsikot ko! Pero I don't recommend na maghanap kayo ng tambay. Pumayag lang ako kasi sabi nung shop na tinanungan ko na mayroon daw syang kakilala.

[vinj]

The tambays in Banawe usually charge more... It's easier to go door-to-door with the surplus shops.

The MAF or the screw to adjust it should never be touched BTW... some mechanics touch it thinking it's for the idling.