Knock sensor ?
Thread Starter
Teching In
Joined: Jun 2013
Posts: 9
Likes: 0
From: Hudson NC
Knock sensor ? Hey guys this has probably been talked about but im new so ima post it. My formula has the check engine light on due to knock sensor. Now the guy I bought the car from is a mechanic so hes helpful. the car runs strong idles fine shows no signs but healthy. so wat would this sensor be own for he said that he believes its due to elevation change. he doesn't think the sensors are bad because the cars runs and drives fine. Im just curious of my options I read that I should change them and I will but he suggest a dyno tune will fix the problem. so in the world of ls1 what do you guys think my first steps should be? and as of now its my transportation is this harmful ? thanks guys
The computer pulls timing whenever this code sets so performance is being reduced.
The possible causes include: (1) faulty wires or connectors on the knock sensor circuit; (2) defective knock sensor; or (3) a faulty PCM, although this typically causes two codes rather one.
The possible causes include: (1) faulty wires or connectors on the knock sensor circuit; (2) defective knock sensor; or (3) a faulty PCM, although this typically causes two codes rather one.
Is this a stock setup? What is the year of the car? mileage? Did someone just wash the engine bay? Change the sensors and the pigtail harness. I don't see a dyno tune fixing the problem.
Thread Starter
Teching In
Joined: Jun 2013
Posts: 9
Likes: 0
From: Hudson NC
ok and its not stock it has full exhaust, injectors, headers, ported head, cam, engine wise. im gonna look into it. the mechanic I bought it from said he thinks the elevation change probably affected it hence the dyno tune fixing it. got it near the beach and I live right along the mountain of NC. its a 99 formula with 103000 miles. but it seems this happens often so maybe they just went out. and no the engine bay is dusty so I don't think it has been washed in awhile.
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
Five Reasons the Camaro Was the Most Pivotal Player in the Pony Car Wars 2.0
Brett Foote
10 Reasons the LS7 Is GM's Most Extreme Naturally Aspirated V8 Engine Ever
Verdad Gallardo
TECH Senior Member
Joined: Apr 2002
Posts: 6,080
Likes: 17
From: So.Cal.
Elevation change will not make the knock sensor fail... and a tune will not make a failed knock sensor work
Read this: P0327
What commonly happens on the LS1/LS6 is that the knock sensor cavities in the valley cover accumulate water which causes the knock sensor bodies to rust, this degrades their performance.
Read this: P0327
What commonly happens on the LS1/LS6 is that the knock sensor cavities in the valley cover accumulate water which causes the knock sensor bodies to rust, this degrades their performance.
Thread Starter
Teching In
Joined: Jun 2013
Posts: 9
Likes: 0
From: Hudson NC
Awesome thanks guys an Im gonna replace them an the harness. I seen the code was for a low voltage. An i read to silicone around the sensor to help stop water build. Wat about brand knock sensor? Ibread not to use autozone stuff which is duralast. They said stick with acdelco due to autozones goin out fast any wisdom?
