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Losing power and juddering!

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Old 25 May 2007, 09:35 PM
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Deano_P1
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Default Losing power and juddering!

Earlier i noticed that my Turbo classic is losing quite a bit of power around 3500rpm onwards...also at around 5000rpm it starts to judder

Any ideas what could be causing this?

CHeers
Old 25 May 2007, 09:47 PM
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fuel filter
Old 25 May 2007, 10:25 PM
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dan83590
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When was it last serviced? (inc plugs)
Old 25 May 2007, 10:50 PM
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What year? if V5 or V6 model (1999-2000) could be the MAF sensor. (usaully FUBAR'd by induction kits)

IMHO

Tony
Old 25 May 2007, 10:52 PM
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or coil-packs.......
Old 26 May 2007, 03:35 AM
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seab
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that year should be single coil, then HT leads. Air leak?
Old 26 May 2007, 09:15 AM
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Just washed the engine bay ??

as said mixture of all above just had it serviced, engine worked on and HT plug lead on lose/bad connection.
Old 26 May 2007, 10:15 AM
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Its a MY00. It has done 52k now and had its major service inc cambelts at 46k

I believe it had all the oil/filters changed just before i bought it which was under 1k miles ago.

It has been running fine the last few weeks. I hadnt really driven it hard until the other night...redlined it for the first time and it seems to be losing power since then
Old 26 May 2007, 11:56 AM
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seab
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over boost, fuel cut?
Old 26 May 2007, 01:12 PM
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How do i resolve this if it is the fuel cut causing it?

It drives fine up to 3000rpm but after there is a noticeable loss in power
Old 26 May 2007, 01:16 PM
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dan83590
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Fuel cut is like hitting a brick wall...
Old 26 May 2007, 02:32 PM
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Its definately not like hitting a brick wall just loss of power and juddering/hesitating at 5000rpm. Could it be a hose or something thats come loose?
Old 26 May 2007, 03:58 PM
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If its a late Classic and all the above is okay then I'd be checking the MAF next..
Old 26 May 2007, 06:22 PM
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The garage i bought it off said they have put a new MAF on but then thats just taking thier word for it.

I dont have a boost guage at the moment...could it be losing boost?
Old 27 May 2007, 01:11 PM
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After reading other posts a possibility maybe the boost solenoid. Where is this located?
Old 27 May 2007, 03:47 PM
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on the driver side strut you will see 2 vacuum pipes going too it, one to the actuator, and one to the turbo i think.
Old 27 May 2007, 03:50 PM
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Originally Posted by Deano_P1
Earlier i noticed that my Turbo classic is losing quite a bit of power around 3500rpm onwards...also at around 5000rpm it starts to judder

Any ideas what could be causing this?

CHeers
Is the engine subaru built?
Old 27 May 2007, 04:40 PM
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Yes, its standard apart from the PPP
Old 27 May 2007, 04:44 PM
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Originally Posted by Deano_P1
Yes, its standard apart from the PPP
Well you see theres the problem. Buy and engine with this logo on it and everything will be fine




Old 27 May 2007, 06:39 PM
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seab
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Tired **** what sort of stupid answer is that.
Old 10 June 2007, 04:27 PM
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Hi Guys,

Just returned fro holidays and my problem has got worse!
Now losing even more power!

One thing i noticed earlier is that the prodrive intercooler hose (i have PPP fitted) has got a split in it near the jubilee clip. Would this cause a loss in power??
Old 10 June 2007, 06:22 PM
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Anyone?

Also do i really need to replace it with a Prodrive hose or can i just get a standard one?
Old 10 June 2007, 06:45 PM
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Originally Posted by Deano_P1
One thing i noticed earlier is that the prodrive intercooler hose (i have PPP fitted) has got a split in it near the jubilee clip. Would this cause a loss in power??
That certainly wouldn't help

Tony
Old 10 June 2007, 08:28 PM
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It it worth me searching for a new Prodrive hose or will the standard one be fine?
Old 10 June 2007, 08:44 PM
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Originally Posted by Deano_P1
It it worth me searching for a new Prodrive hose or will the standard one be fine?
Get a samco mate, very strong and resistant. - They sell all hoses seperatly aswel,not just in kits like you see in online tuning shops.

Old 18 June 2007, 05:30 PM
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Got back from hols last weekend and took intercooler off and checked hose.....its all fine..the split doesnt go all the way through the pipe!

Put everything back as it should be and now the car runs fine!....wierd!!
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