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post #1 of 41 (permalink) Old 01-17-2010, 05:08 PM Thread Starter
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Cobalt Broken....

Hi all,

My Cobalt is broken :(

When I turn it on its shaking alot, so much that the exhaust pipe is shaking too.

It was reading very low oil for some reason, no oil leaks though.

I added 3 quarts of oil so far, now dipstick reports its reading normal, but problem still exists.

I checked sparkies, they are boshe platinum 4s, they appear a little black, but look ok.

I inspected the fuel pump, appears to power on (can hear it).

I aint got a clue what to do...

2006 Chevy Cobalt LS Sedan 2.2 liter engine.

Thanks in advanced anybody
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post #2 of 41 (permalink) Old 01-17-2010, 05:21 PM
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sounds like it's missing really bad. might have a dead cylinder or something.
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post #3 of 41 (permalink) Old 01-17-2010, 06:45 PM Thread Starter
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well it runs, I can drive it and it does turn on, but it shakes alot, I have changed the sparkies and its still the same,

its suspected to be the coil or something, thats an expensive part.

Any other opinions, The Diagnostic test says random misfire.
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post #4 of 41 (permalink) Old 01-17-2010, 06:47 PM
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Did you try takin it to autozone or another auto parts store and see if they can find a problem by pluging in there computer? or just take it to the dealership and see what the problem is.

2006 Cobalt: Bolt On's
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post #5 of 41 (permalink) Old 01-17-2010, 06:48 PM


 
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it's doing the harlem shake nah i dunno
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post #6 of 41 (permalink) Old 01-17-2010, 06:59 PM
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pull the plug wires one at a time...if the car runs the same when a plug wire is pulled then its most likely the plug wire/coil....also check he gap on the plugs....and ive never had luck with the bosch plugs id recommend replacing them asap when you gap them they break easily and they burn out very easily as well
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post #7 of 41 (permalink) Old 01-17-2010, 07:56 PM Thread Starter
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I already changed the plugs, I'm thinking its the coils or something I replaced the plugs with another brand, not boshe this time, the auto store said they were full of sh*t.

I think this is the part thats faulty, any thoughts?

2006 Chevrolet Cobalt Ignition Coil Pack

Last edited by johnccc; 01-17-2010 at 07:59 PM.
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post #8 of 41 (permalink) Old 01-17-2010, 08:13 PM
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probably is but hard to tell unless you diagnose it or replace it lol
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post #9 of 41 (permalink) Old 01-17-2010, 08:17 PM Thread Starter
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I ran the Diagnostics on it earlier, both times at 2 different stores it got the error code, i forget the number, but it reported "random mis-firing".

As far as I cant tell, that means its either the fuel injectors, spark plugs or that coil pack, right?

by the way I'm pretty sure I have ruled out "watered down gas" or low air intake.


I think my only 2 options are the fuel injectors or that coil pack.

Any suggestions other that that anybody?
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post #10 of 41 (permalink) Old 01-17-2010, 08:23 PM
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There are a few things that it could be.

1. You said you changed the plugs. Were you running the same kind before? If you were was it happening then? If so prob. the wrong kind of plug for the car.

2. You said the diagnostic reported "random misfire." Is this is from a CEL (check engine light)? EDIT: You just answered this one...

3. You might be right it could be the coil pack, but it could also be the ECM (electronic control module).

4. Does it always do this, or is it only when you first start it, or after it's been running for awhile?

---------- Post added at 10:23 PM ---------- Previous post was at 10:19 PM ----------

In looking at your last posts I think you may be right about the coil pack. I would replace it. Check this one out. I have bought parts from this Ebay seller before and had no complaints about them.

2006 Chevrolet Cobalt Ignition Coil Pack : eBay Motors (item 120497504177 end time Jan-23-10 06:28:04 PST)

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