jimq

I saw this on another thread and didnt want to do a hijack so here it is.
I also am getting this error when I run scan tool and it keeps coming back. I run 93 octane gas and never hear any knocking. I would like to know where it is also and is it the same for a TIP.

PWW

Thanks Jimq...does your engine check light come on also.

jimq

my car doesnt have a check engine light so dont know.

Gary R.

Jim -

Have you tried disconnecting/cleaning/reconnecting both your knock sensor connections? I got a CEL a while back (think it was on the 91) and the code was knock sensor and after I did that it has gone away never to return.

jimq

where are the connections?

Gary R.

Green plugs.. do a search of the 964 Forum on knock sensor, pics must be here. Do you have adrian's 964 book, think they are there also. One is easy to get to, the other isn't.. think blower motor was what was in the way.

Lorenfb

"my car doesnt have a check engine light so dont know"

Install one. Most/all 964 DMEs have an output for the light with a wire to the bulb socket.

jimq

Yea I figured it did but just havent had a good excuse to pull the guage out to put one in.

JasonAndreas

One (green) connector is located on top of the intake manifold, dead center, front of the engine.


The other (green) connector is located behind the rear blower motor assembly on the left side of the engine.

jimq

As always thanks Jason

springer3

What does the scan tool say the spark advance is? I recall seeing numbers as high as 45 degrees BTDC on the Hammer.

You may be in limp home mode, and therefore have a conservative spark advance map. Fix the sensor problem, and you should notice a significant performance and fuel economy improvement.

jimq

It would be great to think I have been driving in limp home mode The car is running great with plenty of power. I will clean the contacts on the sensors while off at the end of the week and see if that clears the code. Guess I will also put a bulb in the check light.