Author Topic: 2011 Diesel i30, subtle engine surge/ turbo spooling at idle (annoying)  (Read 2225 times)

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  • guest9813

Hello!

First time owner and first time poster. I have purchased a very clean auto diesel 2011 i30. It only has 16000ks on the clock and was used by an old couple, rarely.

I have noticed a small surge that is very annoying and makes driving a little sickening. It is most noticeable when cold and can be noticed most when driving very slowly just above idle. Or even when slightly stalling the transmission. The engine will rattle away as normal and then bump up 50rpm and you can hear the turbo spool, and then back to normal. It cycles through this behaviour about 1 second for each. You can just notice it at higher speeds hot or cold but as mentioned itís subtle.

I got the codes checked and found P0401 Exhaust gas circulation amount insufficient. I have cleared that code and have since had 30 cold starts and 1000klms and there is no codes. The behaviour never changed. Still surging.

Is this a normal behaviour of the diesel i30, some sort of emissions thing? Is it so subtle that the majority donít notice it?

Any ideas would be GREATLY appreciated

Also, I know the battery is original. Itís getting tired. The starter solenoid sometimes clicks but doesnít crank. Seperate issue *Iím not 100% sure if this is a starter problem or a soggy battery.

That aside, the resting and charge voltage is acceptable for a lead acid battery, and the engine cranks (when it does engage) without an issue - just not as snappy as a new batt would. Iím unsure if a tired battery could affect my above problem, but as mentioned the charge voltage is as normal.

Thx

Ian



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  • Laughter is the best medicine. .
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  • au Australia
    Devonport Tasmania
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Welcome Ian,

I'm on my way out so just a quick answer by my standards...   :winker:

Had 4 x i30's but only the 1st one was a CRDi and mine was a manual. Can't say I recall a surge but might be more noticeable in an auto.

I do recall something similar being described on here (but only once or twice)

If nobody comes up with more info before I get home I'll do some searching.

Might just need a good long drive or two. I doubt the battery is to blame but it is possible I guess.  :goodjob:
  • '19 Hybrid Camry & '19 Kona Active 1.6 (Prev had four i30's incl SR and CRDi)

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  • Laughter is the best medicine. .
  • Posts: 65,564
  • au Australia
    Devonport Tasmania
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Although it hasn't done a lot of miles might have had a lot of short trips (just as hard on the starter motor) Bit of a bugger! Hopefully someone can advise the cheapest way to get a new starter motor.

  • '19 Hybrid Camry & '19 Kona Active 1.6 (Prev had four i30's incl SR and CRDi)

  • *
  • Laughter is the best medicine. .
  • Posts: 65,564
  • au Australia
    Devonport Tasmania
  • Best Car Forum on the Net
 :goodjob:

Yes, we often advise new members to disconnect the negative terminal of their battery for at least 30 minutes to reset the BCM. In a previous job I used to get customers to unplug their electrical appliances for a similar period to fix many hiccups and it worked more than 50% of the time!   :cool:
  • '19 Hybrid Camry & '19 Kona Active 1.6 (Prev had four i30's incl SR and CRDi)

 


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