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Originally Posted by KCMoore2013
Thanks BCred...I will try those things tonight or this weekend. The recent driver side CV shaft replacement was due to a busted boot and grease soaked everything on that side of the suspension. When I pulled out the ABS sensor it was caked with CV grease. I cleaned it all up with degreaser and hosed it down, let it sit in the sun most of the day, and *thought* I had dried everything off pretty good. No ABS light for a day or so and then it came on...I took it out last night and hit the hole that it goes into with cleaner and q-tips and they came out covered in grease and grime. 20 q-tips later, they were fairly dry and clean. I have a feeling I might need to take that wheel hub apart again and really get it squeaky clean to keep it from tripping the ABS warning.
One thread also mentioned that the small metal flakes from brake pads could cause the ABS to trip, but I am gonna take them all out tonight and clean them and inspect the blue connectors and maybe shoot some electric contact cleaner in there.
Good tips on checking the idle...I totally forgot about the oil cap test. I also remember on my 528i that the intake "accordian" boot on the throtle body was a common culprit for this...always split underneath where you couldn't see it.
I do need a 4-wheel alignment...been slacking. I've been trying to find a place around here that knows what they're doing.
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When I want to make sure there is no grease on a part I go to my trusty can of lacquer thinner. Cleans great and leaves the part dry. Can't leave it on rubber or plastic very long--attacks them- but otherwise have found nothing that tops it. Not good to leave it on your hands very long either but I never wear any protection.
Yes, a break in the intake tube is fairly common and since it is past the MAF the air/fuel mixture will be affected. One other thing that I would do is have a smoke pressure test done to find any vacuum leaks. A home brew method is to spray starting fluid anywhere there could be a vacuum leak. The engine RPM will increase if the fluid is drawn in. You can also do the test with an unlit propane torch---there is some potential for a fire so be sure to be prepared. However, I have found the shade tree test didn't find leaks that the smoke test did.