Sporadic "Jerking???"

[300kplus]

Hi everyone.

I have a 98 e39 540i automatic. Recently while driving the car, it jerked and then continued driving like nothing happened. It has done this sporadically 3 times on three different drives. Any ideas might cause this erratic behavior?

TIA!

[Pelican Parts]

Likely a fault in the spark plugs or dirty injectors. Getting the codes read will give you a definitive answer where to look.

[bluptgm3]

Symptom of failing VaNos?
(Variable Nockenwellenspreizung or Variable Camshaft Lobe Separation)

[300kplus]

Reminds me--How do I tell if this one has Vanos?

Thanks

[bluptgm3]

If it is a 98 and-on…
http://www.bimmerforums.com/forum/sh...5#post12431855



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[300kplus]

So NO VANOS. Thanks!

Anyone else think it could be something else besides plug or dirty injector? Trying to get a consensus on this although I will pull codes later...

[XAlt]

Fuel supply issues perhaps.

But yea, did you ever change the guides on your car?

[geargrinder]

Wrong sub-forum.... this ain't a Fix, it's a diagnosis request.