I dropped off the beast because I was having loss of power issues. At times the car felt as if its running on only 4 cylinders and did not sound right! I get a call back from the dealer and they say the codes that come up are the CAM ANGLE SENSOR BANK TWO and a VANOS fault. The dealer sais that they are just going to replace the sensor first and see if the VANOS still give a fault code. The technician claims that a bad sensor can set off a VANOS fault. Is this true? It sounds to me like they are too lazy to replace the VANOS unit and just want to patch fix the car???? Any thoughts would be great.
sounds like the right thing to do to me, especially if you're paying.
cps's fail often, vanos' do not, relatively speaking, and a bad cps can cause a vanos fault since cam timing could be off.
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Mike
91 M5 Alpine White II, Silver Gray 3/90 production
17x8/17x9 M system with PS2, 20mm touring roll bar; Ground Control Coilovers; EAT Chip, CD43; bmw/nardi blackline steering wheel, 3.8 Cam Gears
08 535i / 6 speed
Space Gray; Gray; Sport/Premium/Nav
00 M5 Ti Silver; Imola/black sportiv --Sold
Engine:
Supersprint Headers, Dinan CAI kit and MAFS, Throttle Bodies, Cams, Ported heads, Exhaust, Custom dinan software, Evosport Pullies, Dinan clutch and lightened flywheel; Ignition solutions plasma coils
Suspension:
Dinan Stage 3 with front and rear Strut Tower Braces, Beastpower Sway bar brackets, Dinan Wheels with 275/285 PilotSport, X5 Thrust arm bushings, Stoptech 355mm 4 piston front, 355mm 2 piston rear brake kit, Dinan 3.45 diff
Interior/Misc:
Eurodash, updated steering wheel, Bluetooth retrofit, Sirius Retrofit, hardwired V1, Widescreen Mk4 nav, M audio retrofit, Ice Link, BSW Stage 1 speaker upgrade, bmw towbar
Last edited by mottati; 7th December 2005 at 00:28.
Actually its all under CPO warranty. I just dont understand how the cam angle sensor would have anything to do with the VANOS unit. Are they related in any way??
if i understand it correctly, the cam position sensor is involved in controling the vanos, if the cps is malfunctioning, it will result in vanos disfunction. You should run a search for 'cam position sensor' on this board, you'll find a lot of information, it's a common fault.
Mike
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Mike
91 M5 Alpine White II, Silver Gray 3/90 production
17x8/17x9 M system with PS2, 20mm touring roll bar; Ground Control Coilovers; EAT Chip, CD43; bmw/nardi blackline steering wheel, 3.8 Cam Gears
08 535i / 6 speed
Space Gray; Gray; Sport/Premium/Nav
00 M5 Ti Silver; Imola/black sportiv --Sold
Engine:
Supersprint Headers, Dinan CAI kit and MAFS, Throttle Bodies, Cams, Ported heads, Exhaust, Custom dinan software, Evosport Pullies, Dinan clutch and lightened flywheel; Ignition solutions plasma coils
Suspension:
Dinan Stage 3 with front and rear Strut Tower Braces, Beastpower Sway bar brackets, Dinan Wheels with 275/285 PilotSport, X5 Thrust arm bushings, Stoptech 355mm 4 piston front, 355mm 2 piston rear brake kit, Dinan 3.45 diff
Interior/Misc:
Eurodash, updated steering wheel, Bluetooth retrofit, Sirius Retrofit, hardwired V1, Widescreen Mk4 nav, M audio retrofit, Ice Link, BSW Stage 1 speaker upgrade, bmw towbar
Last edited by mottati; 7th December 2005 at 01:20.
Actually its all under CPO warranty. I just dont understand how the cam angle sensor would have anything to do with the VANOS unit. Are they related in any way??
I understand they work together to get the variable timing. CPS fault will often show up as a VANOS code also. Since the CPS is relatively easy and cheap to fix, your dealer is being prudent to do the most likely repair from experience. It shouldn't matter who is paying. You certainly wouldn't want to pay to replace the VANOS on your nickel when a cheap CPS repair would do the trick.
Regards,
Jerry
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'01 Black/caramel
Dinan Stage 3 suspension, SS jet coated headers, ESS SC kit, open brake ducts, Hamann front splitters, TEC cupholder, U.S.(Euro style) tilt/slide armrest, 6k HID fogs, 6k super white low beams, V1/Stealth1, dual head LI, 2.65 diff w/40% lockup/2x dynamic, compact spare, Euro trailer hitch, Mocal oil cooler, ACS type rear spoiler, Rogue custom SSK and tranny mounts, ST 355 BBK (fronts), BP sway bar brackets, Bluetooth retrofit
Actually its all under CPO warranty. I just dont understand how the cam angle sensor would have anything to do with the VANOS unit. Are they related in any way??
In order for the Vanos system to work properly it needs to know the precise position of the cam. It's very likely the replacment of the CPS will also make the Vanos system function properly again.
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