Knock censor location?
Thread Starter
Le Mans Master
Joined: Jan 2004
Posts: 8,295
Likes: 30
From: one night in Bangkok you are never lonely
No I still am having problems with high fluctuating idle. At this time I am looking really hard at a carburetor set up.
But I am waiting for a cable to connect my laptop using a program suggested by Scott Hanson.
There no scanners here that I know of so finding what the problem is will take a program to read what the hell is going on.
Getting the cable sent here takes time and $$$
But with the help from forum members I will get this sorted.
Thread Starter
Le Mans Master
Joined: Jan 2004
Posts: 8,295
Likes: 30
From: one night in Bangkok you are never lonely
I have looked but I am unable to hear any leaks, I wish they sold a propane torch here, so I am waiting for the cable in order to see what the computer says. If there is a vacuum leak I hope the scanning program will tell me?
BTW, what does the knock censor do and what does it measure?
BTW, what does the knock censor do and what does it measure?
Race Director
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
The knock sensor is basically a microphone that is tuned to certain frequencies. It listens for knocks (pre-ignition or detonation), which is usually caused by things like too low octane fuel, too much spark advance, heavy load and things like that.
When the knock sensor detects knocks, the ESC (Electronic Spark Control) module sends a signal to the ECM. The ECM assumes there is too much spark advance for the current conditions and retards the spark. On my car it retards by 6°. Other years might be different.
When the knock sensor detects knocks, the ESC (Electronic Spark Control) module sends a signal to the ECM. The ECM assumes there is too much spark advance for the current conditions and retards the spark. On my car it retards by 6°. Other years might be different.
Thread Starter
Le Mans Master
Joined: Jan 2004
Posts: 8,295
Likes: 30
From: one night in Bangkok you are never lonely
The knock sensor is basically a microphone that is tuned to certain frequencies. It listens for knocks (pre-ignition or detonation), which is usually caused by things like too low octane fuel, too much spark advance, heavy load and things like that.
When the knock sensor detects knocks, the ESC (Electronic Spark Control) module sends a signal to the ECM. The ECM assumes there is too much spark advance for the current conditions and retards the spark. On my car it retards by 6°. Other years might be different.
When the knock sensor detects knocks, the ESC (Electronic Spark Control) module sends a signal to the ECM. The ECM assumes there is too much spark advance for the current conditions and retards the spark. On my car it retards by 6°. Other years might be different.
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