I should probably ohms check each of my wheel sensors and what should I set my DVOM on? Then replace the bad sensor. Mine is a 1997. I assume that it has individual wheel sensors. Am I correct?
I'm going through this myself (ABS sometimes activates slowing below ~5MPH) so I can't claim to have all the answers, but what I've found so far is that the coil in the sensors isn't that likely to be the problem, more likely either the wire, the connector, or metal-contaminated grease has deposited on the sensor end because the bearing is going out and throwing dirty grease on it.
My wheel sensor broke when I tried to remove it, due to the hub rusting above the o-ring that seals it. It tore the plastic outer casing off but "maybe" it is still intact otherwise. I put a replacement in, lubed up good with silicone grease, which resolved the problem for about a month then it was back again. Recently I replaced that hub, but it didn't clear up the problem, so next I'm replacing the other front sensor, or if I can get the old one out without breaking it, will try cleaning it off. They are a coil around a metal core, forming an electromagnet that makes a pulse as the ring teeth pass near. Supposedly severe hub wear can also cause the ring to get too far away but I never detected hub play.
If the other sensor works for a while, then I'm assuming my other wheel hub is going out too, which would only make sense due to them both being the same age, original factory hubs. Then again I could hook up an OBDII dongle and use Forscan to see which wheel's (or rear diff sensor) speed is dropping out at low speeds (I never had the ABS dash light on), probably should do that but I reckon I'm due for new hubs anyway.
If you do get just the sensors, they were a lot cheaper on amazon than Rock Auto. I got two for $20, though if these Chinese sensors fail in a month and that's the cause of my continuing efforts, then they don't look like as much of a good value.
I'm tied up for the rest of the day but sooner or later I can see what ohm readings I get on the first factory sensor I replaced, the Amazon sensor put in its place, and the other Amazon sensor from the two-pack... if I can find it, I'm sure I know where the other two are. Your multimeter should be set to
[edit]hundreds of Ohms range (little under 0.5K)[/edit], then if it's out of range, use the next higher range. I'll know more when I measure mine.
