ESC / knock sensor

[al chernoff]

Gene fisher might, but he is on the road... He will read this or you may want to
email him directly...
al

> Dear Netters,
>
> Is anyone familiar with GM / Olds knock sensor location? I am installing
> Howells kit and am at this point. I always thought the sensor mounted into a
> "through hole" into the block. The position I found that I thought was best
> is located midway on the side of the passenger side block just above the oil
> pan lip. There is an embossed threaded hole with a plug in it. The threads
> look to match the threads on the knock sensor. Upon removal of this plug, I
> find it is threaded into the water jacket. I am now wondering if this is an
> appropriate location or will the water jacket absorb the vibration the sensor
> is supposed to detect? There is no help from Howell today. Any info would be
> greatly appreciated.
>
> Thanks,
> Dave Meekhof
> 73 GoBus 230

 

[heinz wittenbecher]

Dave,

That's where mine is located.

It screws right into the block, located above the axle and there is a
frostplug slightly to the rear of the knocksensor.

A word of caution. If in too tight it'll be overly sensitive. Tighten
sufficiently so that it doesn't leak and then start testing.

Heinz

> Dear Netters,
>
> Is anyone familiar with GM / Olds knock sensor location? I am installing
> Howells kit and am at this point. I always thought the sensor mounted into a
> "through hole" into the block. The position I found that I thought was best
> is located midway on the side of the passenger side block just above the oil
> pan lip. There is an embossed threaded hole with a plug in it. The threads
> look to match the threads on the knock sensor. Upon removal of this plug, I
> find it is threaded into the water jacket. I am now wondering if this is an
> appropriate location or will the water jacket absorb the vibration the sensor
> is supposed to detect? There is no help from Howell today. Any info would be
> greatly appreciated.
>
> Thanks,
> Dave Meekhof
> 73 GoBus 230
>
>

 

[heinz wittenbecher]

Thanks Emery.

Meant to mention it in my original reply so as to avoid that exact
confusion. The location I mentioned was where the knock sensor was installed
when I had the Howell and the location was retained with the Rance EFI.

Heinz

>

>
> frostplug slightly to the rear of the knocksensor.
>
> A word of caution. If in too tight it'll be overly sensitive. Tighten
> sufficiently so that it doesn't leak and then start testing. >>
>
> I suppose the location depends on how sensitive the electronics package is.
> The Caspro sensor/adjustor instructions say to attach it to the head.
> Possibly the Howell system is designed to be more sensitive.
>
> Emery Stora
> 77 Kingsley
> Santa Fe, NM
>
>

 

[gene]

take a look at my web page under
New
"GMC instrumentation you can build"

gene

>Emery,
>
>Thanks for the information. I'd like to hear more about the visual
>indicator. I am, by education, a EE and might want to build one myself.
>This is the first time I've investigated knock sensors other than reading
>Caspro's ads.
>
>My hearing was somewhat impaired by flying jet fighters and, even worse,
>C-130s, which reach 95+ dB in the cargo compartment. But the big loss came
>about 4 years ago on the 19th of Dec. at about 8 PM. As I sat down in front
>of the TV, I heard a tiny CLICK in my left ear. That was the last sound
I'll
>ever hear on that side. The diagnosis by the best ENT doctor Emory
>University Hospital had to offer (a relative) was that a virus (I had a very
>slight sniffle at the time) had attacked the auditory nerve. Se la vie.
>
>Ken Henderson
>
Genef -- 77PB/ore/ca
GMC MOTORHOME INFORMATION
mr.erf
http://www.california.com/~eagle/