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

Question type: Maintenance & Repair

2 Answers

97,115

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.

485

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

Add photo

Related Questions

  • 06 Cobalt Rough Idle/Stall when stopping or quick deceleration 52 answers

    Hello All, Here is the problem I have. 06 Cobalt LT 2.2l 103065 Miles When decelerating on the freeway to come to a virtual stop for traffic, when stopping at a stop light, when pulling out of the ...

    2006 Chevrolet Cobalt LT

    -

    Maintenance & Repair

  • Why is my 2006 Chevrolet Cobalt stalling so much when I drive it? 39 answers

    Here's the problem I am having: When I stop for a red light, when I stop at a stop sign, when I pull out into the highway or road, when I pull into a parking space it stalls.The RPM goes way,way down ...

    2006 Chevrolet Cobalt LS

    -

    Maintenance & Repair

  • Check Engine Light 13 answers

    I bought a brand new '09 Cobalt. I have 38050 miles on it. In less than a month and a half I have had 6 check engine lights come on. Everytime I've taken it to Chevy service center and they've replace...

    2009 Chevrolet Cobalt LS Coupe

    -

    Maintenance & Repair

  • Has it ever been figured out what is wrong with Chevy Cobalts hard shifting after a ding sound and Power Steering display on dash? 19 answers

    For about 4 years, I've had problems with my '06 Cobalt. I've taken it in to several dealers and shops and they've never been able to figure it out. I'll be driving and I'll hear a ding ding sound...

    Chevrolet Cobalt

    -

    Maintenance & Repair

  • Loud knocking noise 5.3 55 answers

    I have a loud knocking noise coming from the engine . At first I thought it was comin from the top but when i get under it it's alot louder sounds like its comin from the oil pan. I had the transmissi...

    2005 Chevrolet Silverado 1500 Z71 Crew Cab 4WD

    -

    Maintenance & Repair

Search Chevrolet Cobalt Questions

Chevrolet Cobalt Experts

#1 lightGear
lightGear
Reputation 1,140
#2 dandyoun
dandyoun
Reputation 930
#3 munron
munron
Reputation 910
View All

Related Models For Sale

Used Honda Civic
656 Great Deals out of 88,604 listings starting at $995
Used Chevrolet Malibu
948 Great Deals out of 79,665 listings starting at $1,500
Used Ford Focus
543 Great Deals out of 57,172 listings starting at $1,095
Used Ford Mustang
474 Great Deals out of 45,735 listings starting at $1,999
Used Chevrolet Impala
521 Great Deals out of 31,726 listings starting at $1,450
Used Honda Accord
813 Great Deals out of 84,286 listings starting at $1,050
Used Dodge Charger
405 Great Deals out of 28,172 listings starting at $1,988
Used Nissan Altima
1,034 Great Deals out of 81,564 listings starting at $1,200
Used Honda Civic Coupe
188 Great Deals out of 16,851 listings starting at $800
Used Toyota Corolla
783 Great Deals out of 73,832 listings starting at $1,995
Used Chevrolet Cavalier
1,000 listings
Used Ford Fusion
1,116 Great Deals out of 83,259 listings starting at $998

Used Cars For Sale

2010 Chevrolet Cobalt For Sale
15 Great Deals out of 742 listings starting at $2,499
2009 Chevrolet Cobalt For Sale
10 Great Deals out of 653 listings starting at $1,995
2008 Chevrolet Cobalt For Sale
13 Great Deals out of 698 listings starting at $1,799
2007 Chevrolet Cobalt For Sale
3 Great Deals out of 745 listings starting at $2,695
2006 Chevrolet Cobalt For Sale
5 Great Deals out of 698 listings starting at $1,995

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.