Question about 1998 Honda Accord
It allows the engine to run with the ignition timing as far advanced as possible. The computer will continue to advance the timing until the knock sensor detects pinging. At that point the computer retards the ignition timing just enough for the pinging to stop.
A knock sensor assures that you're getting as much power and fuel economy as is possible from your engine.
The knock sensor responds to spark knock caused by Pre-detonation of the Air/Fuel mixture. As the flame front moves out from the spark plug ignition point, pressure waves in the chamber crash into the piston or cylinder walls resulting in a sound known as a knock or ping. This is caused by using a fuel with a low octane rating, overheating, or over advanced timing. Sometimes it can be caused by hot carbon deposits on the piston or cylinder head that raise compression. A knock sensor is comprised of Piezoelectric materials; Crystals that when impacted, generate a voltage (same idea as a BBQ ignitor). This voltage is monitored by the computer, and when an irregularity is detected, the computer corrects timing in VVT (variable valve timing) engines, or triggers a DTC Diagnostic Trouble Code) in older vehicles.
Posted on Apr 23, 2010
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
Here's a link to this great service
Posted on Jan 02, 2017
Tips for a great answer:
Nov 12, 2016 | Saturn Cars & Trucks
Jan 10, 2016 | Honda Civic Cars & Trucks
Aug 17, 2015 | Cars & Trucks
Aug 07, 2014 | 2000 Nissan Quest
May 09, 2013 | Cars & Trucks
Mar 16, 2013 | Nissan Altima Cars & Trucks
Jul 19, 2012 | Cars & Trucks
May 01, 2011 | 2010 Bentley Continental Flying Spur
May 15, 2008 | 2005 Chrysler Sebring Conv
418 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: