just got an 06 cobalt. my check engine light came on, took it to advance auto parts to see whats wrong with it, they told me it was a knock sensor. than that same day the check engine light went off and hasnt been on since. should i still take it to a garage to get checked out? or was something maybe just knocked loose while driving that its fine now? how serious of a problem is a knock sensor?

Asked by xking27 Feb 28, 2013 at 02:32 AM about the 2006 Chevrolet Cobalt

Question type: Maintenance & Repair

2 Answers

177,545

A knock sensor retards the timing when the engine is knocking. Even if you can not hear the knocks, they are doing damage to the engine. The sensor may be on it's way out or perhaps it was a loose connector. I would clean and coat the electrical connector with dielectric grease.

935

it could be your gas cap be sure that it is tight or replace with another if that happens again and drive 50 to 100 miles and the light should go off

Your Answer:

CarGurus Experts

  • #1
    munron
    Reputation
    8,450
  • #2
    John Carson
    Reputation
    2,290
  • #3
    MoGo
    Reputation
    1,990
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Honda Civic
176 Great Deals out of 3,690 listings starting at $1,995
Used Chevrolet Impala
10 Great Deals out of 110 listings starting at $4,632
Used Chevrolet Corvette
28 Great Deals out of 1,058 listings starting at $15,871
Used Chevrolet Silverado 1500
195 Great Deals out of 5,967 listings starting at $2,975
Used Chevrolet Colorado
25 Great Deals out of 1,496 listings starting at $6,800
Used Chevrolet Malibu
54 Great Deals out of 1,151 listings starting at $1,295
Used Toyota Corolla
122 Great Deals out of 1,994 listings starting at $2,795
Used Dodge Charger
39 Great Deals out of 645 listings starting at $4,888
Used Chevrolet Spark
24 Great Deals out of 427 listings starting at $3,977

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.