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Walkthrough For Cleaning Mafs R32 Gtr

TrevoR32

By TrevoR32,
in Engines & Forced Induction

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TrevoR32 Rookie

TrevoR32

Posted
Posted

hey guys, first time poster and fairly new to the skylines. My car has been giving a sort of jerking motion on the highway under crusing load. ie: just above and around 0. it shifts forwards and backwards which is really annoying and quite frankly makes me not want to drive it on the highway. i was told that cleaning the mafs may allow for better readings on highway speeds 110-120 km/h. if anyone has a good walkthrough or any other ideas to my aforementioned problem it would be much appreciated. car is basically stock save for an rs-r catback. i was also told that turbo shuffle may be the issue as well. please help thank you.

Trevor

TrevoR32 Rookie

TrevoR32

Posted
  • Author
Posted
Evening Mr 1 post.

Every single Skyline has one of these mysterious "AFM's" hence you can bet cleaning them, has been covered to death.

right, i was really more concerned with having to take out the stock airbox to get at them is all? plus my previous problem haha

GeeTR Grand Master

GeeTR

Posted
Posted

Cleaning the AFM is pretty straight forward, though a guide on how to remove your airbox, you might not find :P

Cruising load ie: just above and around 0

Whats "o" ?

Your stock car wont be shuffling. Check your resting TPS voltage and clean the AFM's first up.

TrevoR32 Rookie

TrevoR32

Posted
  • Author
Posted
Cleaning the AFM is pretty straight forward, though a guide on how to remove your airbox, you might not find :P

Whats "o" ?

Your stock car wont be shuffling. Check your resting TPS voltage and clean the AFM's first up.

Thanks GeeTR, when i say 0 i mean on the stock boost gauge. just out of vacuum. i went to have a look in the engine bay previously and it seems the only way to get at the lower afm is certainly removing the entire box. i may get away with a long socket set to get the top. i was only concerned because i had seen some people saying, "only took me 10-15 min" haha.

GeeTR Grand Master

GeeTR

Posted
Posted (edited)

Boost - Gotcha. Keep in mind a GTR (any Skyline) ECU, has no idea of inlet pressure.

...i was only concerned because i had seen some people saying, "only took me 10-15 min" haha.

"Ppl" use pods and/are liars :P

EDITED: Added some extra words, as im a AU/Swede language f ucktard

Edited by GeeTR
TrevoR32 Rookie

TrevoR32

Posted
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Posted

UPDATE: ended up cleaning the mafs..... but the lurching problem was still evident although possibly a bit better. I have also heard that re soldering the mafs corrects problems as well. at this point im not quite sure what it could be other than drivetrain?

GeeTR Grand Master

GeeTR

Posted
Posted (edited)

Doubt its the drive train.

Re soldering the MAF's would mean some joint has gone dry, or just popped off the PCB. ECU's dont like it when their main load deriver goes non existent. It'll go into limp mode and would spit errors on start ups (lol - trust me)

You should prolly check the ECU for start up errors anywho.

Don't mind me whoring your thread lol :P

Jerking on light load is very common, (im battling with an S14 atm) so do search.

Edited by GeeTR
arep3 Experienced

arep3

Posted
Posted

re-soldering the mafs is easy. take them outta the car. the square panel on the top is held down with black silicone. cut that away and youll see the 4 joins. re-solder them with some fresh solder and reglue the cover back on with black silicone. i took my time when i did this to my car. ( i had a bit to drink:P) took me under 1 hr.

There is a diy on here somewhere. the search button is your friend.

Cheers, Ron

TrevoR32 Rookie

TrevoR32

Posted
  • Author
Posted
re-soldering the mafs is easy. take them outta the car. the square panel on the top is held down with black silicone. cut that away and youll see the 4 joins. re-solder them with some fresh solder and reglue the cover back on with black silicone. i took my time when i did this to my car. ( i had a bit to drink:P) took me under 1 hr.

There is a diy on here somewhere. the search button is your friend.

Cheers, Ron

kk thanks guys, dont worry GeeTR any help is needed, and appreciated. The only reason is that im taking the car on a longer trip this week and i dont think i could deal with the lurching, its driving me nuts. thanks for the input guys.... there is a way to reset the ecu as well right? turn on and hold the brake for 30 sec? i'll search haha thanks again

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