Knock sensor question
Melting Slicks
Joined: Aug 2003
Posts: 3,378
Likes: 388
From: Lakeville MI
In the 89 $6E bins that I've checked, knock (retard) is disabled below 2 mph or below 650 rpm auto/850 rpm manual.
So a stationary vehicle at idle should not be affected by the knock sensor.
So a stationary vehicle at idle should not be affected by the knock sensor.
Thread Starter
Drifting
Joined: Dec 2012
Posts: 1,504
Likes: 73
From: Georgetown TX
I'm trying to figure a way to raise my idle about 75 to 100 rpms at idle in gear without burning chip which I don't have equipment or knowledge to do myself. I have done everything I know and what others have told me to try to get rid of miss at idle. When I first stop at light, idle seems fine then drops lower causing rough idle. NO vacuum leaks. I'm starting to think broken valve spring
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Race Director
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
I'm trying to figure a way to raise my idle about 75 to 100 rpms at idle in gear without burning chip which I don't have equipment or knowledge to do myself. I have done everything I know and what others have told me to try to get rid of miss at idle. When I first stop at light, idle seems fine then drops lower causing rough idle. NO vacuum leaks. I'm starting to think broken valve spring
I suggest a minimum idle adjustment:
http://forums.corvetteforum.com/1570563689-post1.html
A miss is usually an ignition problem. Check your wires in a dark garage for arcing.
Le Mans Master
Joined: Aug 2007
Posts: 8,735
Likes: 411
From: WV
You may want to try cleaning your IAC and the air channels it uses.....This could cause a fluctuating idle..This should be done every few years anyway as preventive maintainance......WW
Last edited by WW7; Jul 21, 2015 at 06:28 AM.
Le Mans Master
Joined: Aug 2007
Posts: 8,735
Likes: 411
From: WV
...This is how I check mine, but instead of a timing light I use a scanner to watch the timing retard...WW
Last edited by WW7; Jul 21, 2015 at 10:27 AM.