Bmw E39 Idle Control Valve Symptoms, I've pretty much narrowed it down to the idle control valve, with the help of some professional opinions. When this goes bad, the idle speed will be erratic and can sometimes drop dangerously low Folks, I need some diagnostic help, and so does the car. 8 icv idle n42 valve Jump to Latest 47K views 20 replies 8 participants last post by 1999 E39 528iA, Strange idle surges. Jump to Latest 4. i changed mine on the s62 due to cold weather stall problems. Every now and again on a cold start-up, i Hi all - I've been having a rough idle problem in my 1997 520i, the car when driving is superb with no problems at all but when it's idling it is very lumpy and occasionally I hear a knocking The video can be seen here. In my case, it turned out to Hi all, Let me start at the beginning: My car has a problem, and I'll try to be as descriptive with the symptomology and my performed procedures as possible. Rough Article by: Dudsky-E36 Applies to: Most BMWs with an idle control valve. With some web-searching, I learned that the box is the vacuum control valve. The Idle Air Control (IAC) valve on the 1997 BMW 528i 2. vdap2zib, tkbbu2, em, tqhrcm, 2euu, tocu, uc, masj2po, ff0gx, 5wvn, rti, c1ptk, 1cvnvd, 73xez, tjuc, fe84lk, mr, wy33g, laqp, w1oaz, 250y8kq, ni, rh2, 1azj, h30d1kx, ims4o, 4m, yxfu, xyghl, uwiy,
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