CEL misfire codes
#1
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CEL misfire codes
Ok here I go again.
This time it is my sons 3.2 cl.
He has misfire codes on all cylinders.
I checked all vacume hoses.
We "seafoamed' the engine 3 weeks ago.
Changed the plugs.
Put in NGK Iridium plugs.
Cleared the codes.
Now they are back.
Any ideas?
ECU?
Coils?
What would be the moest cost effective way to trouble shoot this?
Thanks as always for ideas.
This time it is my sons 3.2 cl.
He has misfire codes on all cylinders.
I checked all vacume hoses.
We "seafoamed' the engine 3 weeks ago.
Changed the plugs.
Put in NGK Iridium plugs.
Cleared the codes.
Now they are back.
Any ideas?
ECU?
Coils?
What would be the moest cost effective way to trouble shoot this?
Thanks as always for ideas.
#5
Advanced
I had the same problem w/ my 3.2 CLS after I changed my spark plugs. The problem lasted for about a month, where the CEL would come on w/ several misfire codes. I could tell that everything was firing as it should and cleared the codes. The CEL would be off for about a week and then go off again 3 days later on its own.
Like I said, this happened for about a month straight (December 07). As of now it has been off since xmas and no problems.
As a side note, sometimes I noticed that when I would fill up w/ quality gas it would go off on its own when compared to some crap gas. Try that, no guarantees, but it worked for me oddly enough.
Like I said, this happened for about a month straight (December 07). As of now it has been off since xmas and no problems.
As a side note, sometimes I noticed that when I would fill up w/ quality gas it would go off on its own when compared to some crap gas. Try that, no guarantees, but it worked for me oddly enough.
#6
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It had the misfire code prio9r to the plug change.I cleared them and changed the plugs now they are back.
Like I said we "used seafoam prior to the plug change, also an can of injector cleaner. I am thinking next is to disconnect the battery, to reset the ecu and see what happens.
Like I said we "used seafoam prior to the plug change, also an can of injector cleaner. I am thinking next is to disconnect the battery, to reset the ecu and see what happens.
#7
Racer
Originally Posted by matt21484
I had the same problem w/ my 3.2 CLS after I changed my spark plugs. The problem lasted for about a month, where the CEL would come on w/ several misfire codes. I could tell that everything was firing as it should and cleared the codes. The CEL would be off for about a week and then go off again 3 days later on its own.
Like I said, this happened for about a month straight (December 07). As of now it has been off since xmas and no problems.
As a side note, sometimes I noticed that when I would fill up w/ quality gas it would go off on its own when compared to some crap gas. Try that, no guarantees, but it worked for me oddly enough.
Like I said, this happened for about a month straight (December 07). As of now it has been off since xmas and no problems.
As a side note, sometimes I noticed that when I would fill up w/ quality gas it would go off on its own when compared to some crap gas. Try that, no guarantees, but it worked for me oddly enough.
I personally follow this process 3 times a year, and have not experienced a misfire.
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