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Underpowered M35

Amokzar
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Amokzar Rookie

Amokzar

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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

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Amokzar Rookie

Amokzar

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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 Community Regular

m35stagea

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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. 

  • 3 weeks later...
Sinista32 Grand Master

Sinista32

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Posted

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 Rookie

Amokzar

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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

Amokzar Rookie

Amokzar

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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

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