3100 DIS issues

[Maverick H1L]

Ya according to rock auto they're all interchangeable... Maybe something's wrong with the bracket? Or you somehow ended up with the wrong sensor?

Well, I looked up the P/N on rock auto an the info says it's for cars between 1987 and 2000. Specifically, Luminas between 1990 and 2001. It's a Standard PC7. However, when I look up for, say, a 1994 Camaro, it shows a PC28. I suppose I need to buy another one. Doh!

The worst part? The sensor is about an inch longer. So where does the other $30 in price come from?

[caffeine]

Ya according to rock auto they're all interchangeable... Maybe something's wrong with the bracket? Or you somehow ended up with the wrong sensor?

[Maverick H1L]

caffeine would be correct... I'm running 3100 heads on a 3.1 RWD block. No provision for the internal 7x. The crank doesn't even have the tone ring.

Are the 3x00, 2.8/3.1/3.4 7x CKP sensors not the same? It seems to me that they would be since they all mount the same in the same place on the block, but maybe that's just me?

[caffeine]

I think he's using a RWD block ericjon. But ya, sounds like the crank sensor is nowhere near close enough to the reluctor ring. Maybe try a 3.1L sensor?

[ericjon262]

a 3100 should have an internal ring, with no requirement for an external one. my understanding is that the gap between the sensor and the ring should be .050"

[Maverick H1L]

I've got a question about the DIS on the 3100.

If I have both plug wires off of the same coil, should a spark not jump between the wire terminals when cranking? Mine doesn't. And yes, it's got power and ground.

Also, what VAC reading should I be getting at the module end of the 7x CKP wire while cranking? It doesn't seem to me that I'm getting very much. From what I've read, the 7x is supposed to be pretty close to the reluctor ring. My TCE kit has the metal tip of the 7x about a half inch away from the notches, and that's with the bracket pushed as close to the damper as possible (it was bad enough I had to put washers in behind the bracket to get it lined up with the notches and yes, I do have the damper on all the way).

:edit: According to the pic on the britishcarconversions.com site, it looks like my standard 3100 7x CKP is too short? Pic attached below is from the site. I don't have one of mine, but the tip of the CKP is well inside the tube on the bracket.