Question about Cars & Trucks
There is every possibility that the the CPU program was corrupted by he long time the battery was not being charged . use a scanner to reset the program and then see if the fault codes persist.
Posted on Dec 07, 2014
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Posted on Jan 02, 2017
SOURCE: 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.
Posted on Oct 12, 2009
SOURCE: cyl. 3 miss fire code po303
is it a quad 4 id replace both coils and the module. u can take that ciol plate off the engine ground the plate to the engine with alligator clip wire take an extra set of plug wires ad put them on the coils and the spark plugs start engine pull #3 wire n c if it fires at plug first if not check at the coil still no spark replace that coil. how ever if u have spark but still miss #3 swap injectors 2 and 3 c if u move the miss to #2 if not its prolly mechanical and quad 4s r know for failing
Posted on Mar 18, 2010
OBDII those codes generally mean misfire.
P0300 multiple missfire
P0301 missfire cyl 1
P0302 missifre cyl 2
Ensure you have the proper spark plugs. Check the coil boots/wires, look for burn marks. Anything beyond that you may have to take it back to the shop.
You are misfiring on all 4 cylinders and it is not spark plugs. Those misfires if not addressed can cause serious engine and/or cat converter damage. There are lots of things that could be causing it and most of them need to be checked out at a shop - unless you want to invest several thousand dollars in the appropriate equipment and training.
Posted on Dec 21, 2010
Posted on Sep 12, 2011
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