I was just thinking about how important the knock sensor is and realized that the series I only has 1 knock sensor. It currently goes on the back of the engine up by the firewall but I know (Because it was accidentally placed there) that it will fit on the right side of the engine facing the radiator, there is actually a hole there for one. I'm wondering if I could buy another one, install it in the right side of the engine, splice into the other knock sensors wire, attach a diode between the wire and original sensor to keep voltage from the new sensor from going into the other one, stop by a junkyard and pick up a sensor clip then run the wire from the new sensor to the wire feeding the old one, and bada bing a knock sensor for each side.. Do-able? Hmmm I forget if its a single or dual wire setup. If its single the whole diode thing won't work because voltage needs to be able to return up the line and the diode would stop that...ahh any ideas?

I honestly dont think the PCM would interpret the info correctly. But it wouldn't be hard to disable the 2nd sensor incase the PCM went "DUH!"

hrmm....if I'm thinking what I think you're thinking I don't think it'll work all that good either...ahh too much thought! Anyway the only problem I can think of off hand would be that the one it has now is designed to listen to every cylinder and send a response to the computer. Well if the computer gets two responses at the same time (well because of the extra wire it'll be 0.00000000000000000000000000000000001 second later) it might go "duh!" and really retard the timing. Also if I remember correctly the computer will compensate depending on how much voltage comes back. Maybe 5v = 1 deg retard and 6v = 2 deg. If both sensors detect the same knock and send the same voltage instead of a small 5v it'll be sending 10v resulting in more timing retard than necessary. Think about flying down the track and both sensors pick up a pretty big knock, huge voltage gets sent up the wire and the engine retards the timing entirely too much. That could be damaging on its own...hmmm maybe this is one that shoudl be left untouched

It'* strange. Electricity is still considered a theory because of some of the attributes that are in a seeming state of constant change. To me, this sounds like something that can only be best proven/disproven through trial and error. Unless you can get a hold of a true electrical guru...Andy knows alot...

might work but i dont think any car has 2?

So, the PCM would be programmed to recieve and process two different impulses then??

Oh, I'm not doubting you, I was just curious how it works... :?

.......

No, really, I wanna know how it works!!!

For the Series II its 2 separate wires that go 2 the PCM. Each one give individual info to the PCM. You can disconnect one and be OK-disconnect both while having problems and you'll have more problems. I've tried it all with these little bastards . Trying to pull a new P/B with a spun bearing is next to impossible-damn Knock sensors-who needs them anyways.

I'm almost positive the Series I can be setup the same way-you just need have it proggrammed into the PCM and know where the wire goes (PIN).
But both into the same feed/PIN will cause some problems-just my .02

I do believe my '87 LeSabre has 2 knock sensors-similar location as the series II-IIRC.