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engin code


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paulrice
User

Jan 2, 2013, 8:47 AM

Post #1 of 3 (2589 views)
engin code Sign In

2006 cadillac srx 3.6 6cyl po300 code 301 302 303 304 305 306 codes put a scanner on and shows these codes at once car was running fine stopped for an hour started it up ran shakey still runs shakey noticed tail pipes some black soot mybe egr?


Tom Greenleaf
Ultimate Carjunky / Moderator
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Jan 2, 2013, 9:10 AM

Post #2 of 3 (2579 views)
Re: engin code Sign In

I don't and do not need to look up codes for this. It is running like crap so will throw codes. If this was a surprise you need to find what is in common. For now check fuel pressure KOEO (key on engine off) and see it that's OK. Rule out what you can. Right now I'm doubting a spark issue so rule out fuel pressure being too low... -- T


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Jan 2, 2013, 1:37 PM

Post #3 of 3 (2529 views)
Re: engin code Sign In

You have a misfire in every cylinder so stop checking all the basics as Tom advised.



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