Question about 2008 Chevrolet Silverado 1500

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Po304 what caused this help pls to get rid of it

Cleared code it came back the next day

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P0304 Cylinder 4 Misfire Detected, hope it can help you!
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FGTech Galletto 2

Posted on Jan 01, 2013

  • Drew Jan 01, 2013

    it only has 37,000 miles on it. do you think coil bad

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2006 Audi s4 4.2l error codes po300 po303 po304 po340 and po345


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Changed my coil pack and now my tach quit working, started my car and let it run for a minute, next day it won't start. code PO304 & PO350


Sounds like you didn't quite get everything hooked back up. Double check that all the wires are connected.
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1 Answer

CODE PO304


Code PO304 means that Cylinder number 4 is misfiring.

Feb 27, 2015 | Cars & Trucks

1 Answer

Engine light


Missfire, cylinder # 4 . Check plugs and wires first. Here's a link for you, that may help next time..
( http://www.obd-codes.com/trouble_codes/ ) Gives a good list of all codes.

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I have 2006 hyundai sonata with #501 code can you help me please?


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Vehicle Speed Sensor Circuit Range/Performance

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Code po304 car wont start


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Engine check light on while driving, already replace new fuel filter with regulator, clear fault using vw diagnosis tool, after driving several days, the fault occured again with the fault code p0441>


Your EVAP purge valve may be faulty. Also, check the vaccum lines attached to the valve for any signs of wear and tear. Should be located next to the coolant tank.

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I have a 97 ford expedition 4.6L im having some trouble with. It started having some hesitation and sputtering in the acceleration and some backfiring when driving. First code said too rich or too lean in...


this may or may not help.
i have a 98 F150 with a 4.6 that i had an independent garage change the plugs and coil packs after i had the same problems you did. i had to take it back to him several times after and it never ran correctly, out of frustration i called the dealer where i bought the truck and took it to them. this was a small dealer about 200 miles from where i live, but my family is there. no large dealer ****, just leave the truck with us. one week later i got it back with everything fixed and it has run flawlessly since 2005. i was told that the problem was (1) the 1st guy didnt know what he was doing. (2) aftermarket parts didnt work. sounds like a load,but...

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Code po304 #4 cylinder mis fire


ck if you have spark at the coil for that cylinder. check the plug wire closely. if it has spark at the coil, then replace all the spark plug wires.

Oct 12, 2009 | 2000 Cadillac DeVille

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