No knock, knock

[The Thibodeaus]

I have been monitoring my TPI Corvette with an Auto X-Ray and the knock
sensor shows up quite good, unfortunately a little more then I would like
it to.  Per the Corvette service manual, with the engine idling in neutral,
tap on the passenger side exhaust manifold or head lightly to see if the
knock sensor responds on your Diacom.

Bob T


At 05:15 PM 10/23/98 -0400, you wrote:
>On Oct 23,  8:21pm, Matt Tomlins wrote:
>> Subject: Re: No knock, knock
>> Bruce
>> I have had the same sort of problems with the 808. Changing the knock
module
>> from one memcal to the other moved the problem. It seems that not all
>> modules are created equal.
>
>I have a '165 ECM for my TPI motor.  I believe that I'm getting knock, but
>the knock sensor and/or ESC module not detecting it.  Anybody have some
>good diagnostics to determine this?  I've revved the snot out of it in
>neutral like someone suggested, but no knock shows up on my Diacom.  No
>codes stored either, so it doesn't think the knock sensor is bad...
>