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2007 BMW 525i errors 2A98,2A99
18-12-2018, 01:16 AM,
Post: #1
2007 BMW 525i errors 2A98,2A99
2007 BMW 525i errors
2A98 crankshaft inlet camshaft correlation
2A99 crankshaft exhaust  camshaft correlation
 Vanos solenoids replaced with brand new ones errors cleared,
as soon as car starts they come back .
 engine start and runs ok .
Front main seal was replaced because serpentine belt broke and some parts of it was found behind the pulley .
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18-12-2018, 05:44 AM,
Post: #2
RE: 2007 BMW 525i errors 2A98,2A99
(18-12-2018, 01:16 AM)koziol Wrote:  2007 BMW 525i errors
2A98 crankshaft inlet camshaft correlation
2A99 crankshaft exhaust  camshaft correlation
 Vanos solenoids replaced with brand new ones errors cleared,
as soon as car starts they come back .
 engine start and runs ok .
Front main seal was replaced because serpentine belt broke and some parts of it was found behind the pulley .

Not to be the bad luck guy, 

Looks the cam timing is off, if so you can try by re-timing the engine in the cams. But it the codes come back then need to re-time engine plus replace the crank hub bolt 11 21 1 439 395 and properly re-torque it. most likely got loosen when the belt got stuck in the pulley.

Note: recheck bolt part number it may not be correct because no VIN # provided 

Good luck bud
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[+] 1 user says Thank You to crazybm for this post
18-12-2018, 08:09 AM,
Post: #3
RE: 2007 BMW 525i errors 2A98,2A99
Clean non-return valve in cylinder head from deposits
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18-12-2018, 13:14 PM, (This post was last modified: 18-12-2018, 13:15 PM by koziol.)
Post: #4
RE: 2007 BMW 525i errors 2A98,2A99
what do you mean by re-timing the engine in the cams
non-return valve are ok i cleaned them
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18-12-2018, 13:43 PM, (This post was last modified: 18-12-2018, 13:45 PM by Twoone.)
Post: #5
RE: 2007 BMW 525i errors 2A98,2A99
(18-12-2018, 13:14 PM)koziol Wrote:  what do you mean  by re-timing the engine in the cams
non-return valve are ok i cleaned them

a) check the positions of camshafts, using special tools;
b) replace the rings of the sensor (it can be magnetized – also this can generates extra error messages);
c) replace the VANOS sensor.(magnetic field of hall sensor degraded)
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[+] 1 user says Thank You to Twoone for this post
18-12-2018, 18:16 PM,
Post: #6
RE: 2007 BMW 525i errors 2A98,2A99
be careful from holes that one of them used to hold crankshaft during timing as they close to each other
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18-12-2018, 19:17 PM,
Post: #7
RE: 2007 BMW 525i errors 2A98,2A99
And how about rings on camshafts, any wear in cylinder head where are the rings in contact with head?
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20-12-2018, 03:49 AM,
Post: #8
RE: 2007 BMW 525i errors 2A98,2A99
Again sorry for the bad news, I hope am wrong but you have the codes:

2A98 crankshaft inlet camshaft correlation
2A99 crankshaft exhaust camshaft correlation

in other words the correlation (timing) between crank and both cams is incorrect,

those aren't vanos plausibility or control or adaptation that can be cured with outside parts, or the wear in the cam journals

Good luck
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