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The BMW Range
5 Series
E60, E61
Acceleration surge
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<blockquote data-quote="salzki" data-source="post: 749923" data-attributes="member: 51796"><p>Hi guys so recently I've been experiencing this rather odd behaviour from the car (E60 N52 530i LCI). Okay let me give you a scenario:</p><p></p><p>Let's say I'm cruising at 60km'h and I wanna give the car a little push so what do I do? I give the accelerator pedal abit more push so the car can accelerate. So here comes the odd part, the car actually surges and lost power for a split second and then it started accelerating. </p><p></p><p>Only happens when I wanna give it a little more acceleration from a cruise, no such problem if I'm in Sport mode.</p><p>This usually happens more often (8/10) if the car is still cold/after I left it for quite sometimes. Once it's warmed up, probability of it happening is 3/10.</p><p></p><p>So I've asked my mechanic regarding the issue and they couldn't really find any problem with it, hmmm. I searched up online and there are quite a few possibilities leading to this behaviour.</p><ol> <li data-xf-list-type="ol">It could be that I needed a new atf oil.<br /> </li> <li data-xf-list-type="ol">One of the solenoid could be on its last leg.<br /> </li> <li data-xf-list-type="ol">Many more gearbox related issue.</li> </ol><p>At the moment it hasnt shown any error codes and the fact that I can still drive the car normally, it kinda scares me.</p><p>I wanna fix this before anything else fails, I'm all in for preventive maintenance.</p><p></p><p>Hope you guys can chime in and share your opinion or maybe past experiences regarding this issue, really appreciate it.</p><p></p><p>UPDATE (29/9):</p><p></p><p>So I finally went to my mechanic and got it checked out, they discovered a VALVETRONIC fault code so they proceed to diagnose it.</p><p>After 1.5k of parts & labor, it finally runs good now! They replaced the VALVETRONIC motor and the windshield washer motor since it was leaking too.</p><p></p><p>UPDATE (4/10):</p><p></p><p>It was all smooth and fine until recently the problem came back again. I've checked my plugs and still good, not sure bout fuel filter. But what's odd is that it was giving the valvetronic motor code, nothing else. I'll send it to my mechanic again to check for the new fault codes. This is pretty infuriating. Welp, there goes my 1.5k <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p><p></p><p>LATE UPDATE: (17/2): Issue is resolved!</p></blockquote><p></p>
[QUOTE="salzki, post: 749923, member: 51796"] Hi guys so recently I've been experiencing this rather odd behaviour from the car (E60 N52 530i LCI). Okay let me give you a scenario: Let's say I'm cruising at 60km'h and I wanna give the car a little push so what do I do? I give the accelerator pedal abit more push so the car can accelerate. So here comes the odd part, the car actually surges and lost power for a split second and then it started accelerating. Only happens when I wanna give it a little more acceleration from a cruise, no such problem if I'm in Sport mode. This usually happens more often (8/10) if the car is still cold/after I left it for quite sometimes. Once it's warmed up, probability of it happening is 3/10. So I've asked my mechanic regarding the issue and they couldn't really find any problem with it, hmmm. I searched up online and there are quite a few possibilities leading to this behaviour. [LIST=1] [*]It could be that I needed a new atf oil. [*]One of the solenoid could be on its last leg. [*]Many more gearbox related issue. [/LIST] At the moment it hasnt shown any error codes and the fact that I can still drive the car normally, it kinda scares me. I wanna fix this before anything else fails, I'm all in for preventive maintenance. Hope you guys can chime in and share your opinion or maybe past experiences regarding this issue, really appreciate it. UPDATE (29/9): So I finally went to my mechanic and got it checked out, they discovered a VALVETRONIC fault code so they proceed to diagnose it. After 1.5k of parts & labor, it finally runs good now! They replaced the VALVETRONIC motor and the windshield washer motor since it was leaking too. UPDATE (4/10): It was all smooth and fine until recently the problem came back again. I've checked my plugs and still good, not sure bout fuel filter. But what's odd is that it was giving the valvetronic motor code, nothing else. I'll send it to my mechanic again to check for the new fault codes. This is pretty infuriating. Welp, there goes my 1.5k :) LATE UPDATE: (17/2): Issue is resolved! [/QUOTE]
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