Underpowered M35

[Amokzar]

Underpowered M35

Hi guys,

New to stageas (and turbos) just bought an axis M35 VQ25DET. I have noticed that the car has a rather rough idle, doesn't appear to be making any boost but don't have a boost gauge to verify that and tends to jerk around when driving. 

My guess is a blown turbo. Has anyone else had these symptoms? Going to take it in to get looked at when I have some time off.

 

Thanks guys

Edited June 3, 2017 by Amokzar
Spelling mistake

[m35stagea]

Could be alot of things. Where are you located.

[Amokzar]

Located in Gosford NSW. 

[m35stagea]

Engine light at all? Could be alot of things.

[Amokzar]

originally no engine light. i unplugged the AFM to see if it would behave differently (it did, idles so much smoother) but in doing so it has now thrown a check engine light.

I am thinking it may be the AFM now as i'd assume if it wasn't, unplugging it would have made the car worse?

[m35stagea]

Unplugging it will put it in limp mode. I would replace the afm with a known working unit personally to see if it is the problem. Do a search there are a multitude that fit. its same as xtrail and alot of subaru. Youll find cheaply

[Amokzar]

yeah, i'll be trying to source one locally tomorrow. hopefully it's the issue.

[m35stagea]

I have seen some do some weird shit lately. someones was jumping 0.5v randomly up and down for no reason. 

[Amokzar]

yeah, i been reading up on the stagea AFM, and one guy had VERY similar issues as me, seem to break really really easy, so may look into a subie or xtrail replacement one

[m35stagea]

Just now, Amokzar said:

yeah, i been reading up on the stagea AFM, and one guy had VERY similar issues as me, seem to break really really easy, so may look into a subie or xtrail replacement one

usually its the thermister that goes not atually the afm itself. But that does cause problems because it gives the engine no inlet temp reading. 

[Amokzar]

Makes sense... ahh well hopefully i'll have a working stagea soon.... only bought it the other day, ran fine on the drive home, go to use it 2 days later and these symptoms happened

[Amokzar]

2 fried coil packs.... replaced them and the spark plugs and she went like a bat outa hell again... 200kms later though and the powers died off again, still quick but nothing like she was when the plugs first went in

[Sinista32]

Did you replace all coil packs?

 

Best to do all coil packs  if they're still 4 of the originals in there. (and the plugs)

Bit like when a brake globe goes you can bet the other one is only a few weeks away from blowing also.

[Amokzar]

2 hours ago, Anonymouse said:

Did you replace all coil packs?

 

Best to do all coil packs  if they're still 4 of the originals in there. (and the plugs)

Bit like when a brake globe goes you can bet the other one is only a few weeks away from blowing also.

Yeah replaced all 6 coils. Did all 6 spark plugs while I was in there

[Sinista32]

You don't idle it for a long time or move it short distances? Pull your plugs and check them, see if they tell you anything.

Coil packs were new and OEM or Splitfires?

[Amokzar]

New oem coils. I generally don't idle it for long but it does all its driving in city traffic. May check for boost leaks as down low is right, it's just when turbo spools up it hasn't got the same power it did... so my guess is either blocked cat, boost leak or the plugs

[Sinista32]

14 minutes ago, Amokzar said:

blocked cat, boost leak