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Rb25De Running Really Rough?

Miguelone

By Miguelone,
in Engines & Forced Induction

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Miguelone Grand Master

Miguelone

Posted
Posted

Ok so I'm thinking this is an an AFM issue but I'm not really sure.

Basically I took all the air intake off to replace the power steering pump then after I put it all back the car misfires and runs really rough in general and tends to stall.

I haven't really driven the car like this I've just let it idle for a bit and opened up the throttle a little. I cleaned up the engine bay a lot while I was at it as it was all dusty and dirty.

Could it be possible that I may have just gotten something on the AFM or damaged it whilst it was out or is this caused by something else?

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https://www.sau.com.au/forums/topic/349740-rb25de-running-really-rough/
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-Jimmy- Mentor

-Jimmy-

Posted
Posted

I think you're on the right track with the AFM. You can try cleaning the sensor inside by spraying something like carbie cleaner and see if that helps.

You can also open it up and check the connections on the pins and resolder if necessary.

I did both of these and mine still was misfiring so I just replaced the AFM and it ran fine.

Miguelone Grand Master

Miguelone

Posted
  • Author
Posted

Tried giving it a clean out, thinking I'll try grabbing a new one and see how I go although took it for a quick drive today and it seemed to get better every minute though it still wouldn't rev past 2500-3000.

WYTSKY Veteran

WYTSKY

Posted
Posted

if it wont go above 2500-3000 thats definitely a problem with the afm.

The reason it wont go over that is the ecu is not getting a signal from it - do check if it is plugged in properly and that none of the cables have come out of it.

central coast person Proficient

central coast person

Posted
Posted (edited)

It doesnt sound like a AFM because it would be eratic constantly. It sounds like missfire, did you use water to wash your engine bay???

Edited by central coast person
Miguelone Grand Master

Miguelone

Posted
  • Author
Posted

It doesnt sound like a AFM because it would be eratic constantly. It sounds like missfire, did you use water to wash your engine bay???

Nah I just use degreaser and a rag.. lots of rags. Sorted now, replaced the AFM and all good.

Cheers everyone for your help!

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