Reply With QuoteSomething sounds a bit iffy here. By doing this the ecu's idle switch will be open, so you car's not really idling at all.
Cheers,
Shaun
Finally passed emission. Here is my bag of tricks.
After many frustrations, my baby finally passed.
My car always passed with flying colors for HC at speed, but failed at the idle emission - actually you can smell it. Lot of that I think was due to the rough idle 700/800rpm. It failed last time even with a full tune up, oil change, intake cleaner, ICV cleaning, TB cleaning & valve adjustments. This time changed the O2 sensor, and ditched the KN filter for stock. After driving for awhile, I can still smell the nasty exhaust at idle. So cleaned ICV & TB again. I was looking at the TB and tried to figure out a way to raise the idle. There is a little bolt that adjusts the closed position of the TB. The thottle was opened to where it idled at 1000 rpm and the bolt was tightened. Those that know more about TB can chime in. The HC went from 880 to 40. Now I can spend more time on other more fun things - waxing the car before it gets cold.
Major Contributor
Something sounds a bit iffy here. By doing this the ecu's idle switch will be open, so you car's not really idling at all.
Cheers,
Shaun
Major Contributor
Originally Posted by E34-520iSE
Sounds like it was just done to pass the test
[1994 530i/5-Speed]
That's correct. Now its back to normal blap blap blap idle.
Green Beret Special Ops
now to figure why it idles crappy.
95 E34 530I V2.37
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Those who make peaceful revolution impossible will make violent revolution inevitable.
John F. Kennedy
Major Contributor
An air/vacuum leak?
No leaks, so I suspect the ICV or the AFM. Done lot of testing, but still have few more things to look at. ICV works (not sure it works 100% properly), rpm moves down and up when I disconnect/connect the plug. Haven't had time to test the AFM so that will be next. I am just happy that something that has been annoying problem has been solved, be it only be a temp fix. Now that I have my tab, I can get back to finding the source of the "blap blap blap" idle.
4 Grand Master
Follow this procedure, courtesy of the Great, Grand Master Wrencher, Bill R.
Join the Aussie 540i LE yahoo forum
08/88 535i e34 M30+miller MAF, 'stiens, tints & teeth!
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