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Thread: Boost problems.

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    Boost problems.

    I took the R out last night for a quick blast to the supermarket, and I noticed that in 3rd and 4th gear especially, when I floored it, the turbo spooled up as normal, giving nice strong boost up to about 4000rpm, then hesitated, then boosted again, then hesitated again, then boosted again, it continued doing this all the way up to the redline. Does anyone know what the problem might be, it's as if the wastegate is opening and shutting repeatedly after about 4000 rpm so my thoughts are TCS, or actuator, but not sure. Any help would be appreciated.

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    Check codes? It may show one of your sensors being off.
    2005 S60 T5 - Remapped 321BHP

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    stribo (Friday 29th June 2012)

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    Quote Originally Posted by MattM View Post
    Check codes? It may show one of your sensors being off.
    Will I be able to check them with a generic OBDII reader?

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    Mine done the exact same as yours the other week & I used a generic code reader & it showed up a stored code & was the IAT sensor even though the EML wasn't on, cleared the code & cars been fine since,
    My03 S60R, 340bhp Rica remap, Tinted windows, Stainless 2.5" cat back exhaust system, FMIC.

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    stribo (Saturday 30th June 2012)

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    Ive got a code reader

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    stribo (Saturday 30th June 2012)

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    O.k., cleared the code, and been out for a blast, it was fine at first, but then the problem returned. I got home, and plugged the reader back in, and the code has returned. The code is:

    P0017 Crankshaft Position Camshaft Position Correlation (Bank 1 Sensor B)

    but I'm none the wiser, is it a cam sensor, crank sensor, or something totally different. HELP

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    P0017 -- ECM-671C -- Camshaft position, exhaust -- High, (I would guess a faulty camshaft position sensor)
    Old Cars: Mazda6, Laguna 2.2, S40 T4, Passat 1.8t, Celica GT4, Legacy GTB, Golf VR6, S70 2.5t, C70 T5
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    Quote Originally Posted by s_cowen View Post
    Mine done the exact same as yours the other week & I used a generic code reader & it showed up a stored code & was the IAT sensor even though the EML wasn't on, cleared the code & cars been fine since,
    Have you got yr own reader. Im after getting mine done.

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    cheap ebay bluetooth one and the torque app works fine for mine (not that ive had a single code since I got the DIM done )
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    Quote Originally Posted by shepbomb View Post
    P0017 -- ECM-671C -- Camshaft position, exhaust -- High, (I would guess a faulty camshaft position sensor)
    Does anyone know where this is, as the inlet sensor's in full view, but can't find the exhaust one.

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    Quote Originally Posted by graemewelch View Post
    Have you got yr own reader. Im after getting mine done.
    Yeh mate got a wifi obd cable which links up to my iPhone & I have a couple of apps which alow me to read & clear only the generic codes & also data log while you drive, I'm normally near Chester every day for work & always carry the cable on me, so if you ever need it give me a shout & can sort something out!
    My03 S60R, 340bhp Rica remap, Tinted windows, Stainless 2.5" cat back exhaust system, FMIC.

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    I have a feeling it will be under the engine bracket mount but hopefully someone can confirm that before you remove the bracket
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    I think this is exhaust camshaft sensor.
    Last edited by oblark; Sunday 1st July 2012 at 12:30.

    1996 850 T5 AWD - Self tuned M4.4 ECU with COP`s, B5254T ( S60R internals in a 850 block ) ostrich 2.0 , VXR injectors @ 3.8 bar, K24 turbo with a 6+6 compressor wheel, 3.25" MAF, top mounted Dump Valve, RN Exhaust manifold, 3" downpipe with 200 cell cat, 2.75" Stainless exhaust, Brembo calipers, S60R brake discs, stainless RIP kit, 3" Throttle body,

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    Quote Originally Posted by s_cowen View Post
    Yeh mate got a wifi obd cable which links up to my iPhone & I have a couple of apps which alow me to read & clear only the generic codes & also data log while you drive, I'm normally near Chester every day for work & always carry the cable on me, so if you ever need it give me a shout & can sort something out!


    Im more towards durham now ( witton gilbert). But can always meet somewear yr passing. Ive just ordered a bluetooth device so hoping thatl work ok with my phone.

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    Quote Originally Posted by stribo View Post
    O.k., cleared the code, and been out for a blast, it was fine at first, but then the problem returned. I got home, and plugged the reader back in, and the code has returned. The code is:

    P0017 Crankshaft Position Camshaft Position Correlation (Bank 1 Sensor B)

    but I'm none the wiser, is it a cam sensor, crank sensor, or something totally different. HELP
    The correlation between the exhaust camshaft sprocket and crankshaft have gone out so far that the control module cannot adjust the adaption anymore so you get the code and should have the light on as well!

    You may need an oil change, cambelt jumped a cog, VVT valve on exhaust sprocket gone west. The ECM-643A or 644A (depending on high or low sensor signal) is the Volvo code for your model.

    You could try another camshaft sensor but the fault does not point to that!

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    Quote Originally Posted by 960kg View Post
    The correlation between the exhaust camshaft sprocket and crankshaft have gone out so far that the control module cannot adjust the adaption anymore so you get the code and should have the light on as well!

    You may need an oil change, cambelt jumped a cog, VVT valve on exhaust sprocket gone west. The ECM-643A or 644A (depending on high or low sensor signal) is the Volvo code for your model.

    You could try another camshaft sensor but the fault does not point to that!
    So what you're saying is this is a garage job. It had a full service including cambelt and waterpump change.

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    sounds expensive what ever it is. how long since had the cambelt done. might be worth getting it checked just incase have a slack belt and its jumped.

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    The belt was done about 3 months ago. It sounds like it maybe the VVT valve from what 960kg's saying, as it only plays up after 4000rpm which is when I'm guessing the cam timing should be changing.

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    Quote Originally Posted by graemewelch View Post
    sounds expensive what ever it is. how long since had the cambelt done. might be worth getting it checked just incase have a slack belt and its jumped.
    If it`s jumped, then this the result.......



    Bent valves..........

    1996 850 T5 AWD - Self tuned M4.4 ECU with COP`s, B5254T ( S60R internals in a 850 block ) ostrich 2.0 , VXR injectors @ 3.8 bar, K24 turbo with a 6+6 compressor wheel, 3.25" MAF, top mounted Dump Valve, RN Exhaust manifold, 3" downpipe with 200 cell cat, 2.75" Stainless exhaust, Brembo calipers, S60R brake discs, stainless RIP kit, 3" Throttle body,

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    Yeah, I don't think it's jumped, as it runs perfectly below 4000 rpm.


 

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