Codes 300, 302,305,306 -
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post #1 of 3 Old 08-23-2017, 04:03 PM Thread Starter
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1997 ZJ 
Join Date: Jul 2012
Location: Bartlesville
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Codes 300, 302,305,306


My wife's 1997 grand cherokee threw these codes this morning. Random misfires and misfires on cylinders2,5 & 6.
My thoughts are replace plugs and wires.
Am I missing anything. I have replaced dist cap, rotor bug and pick up coil this spring.

RangerDave1968 is offline  
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post #2 of 3 Old 08-23-2017, 07:00 PM
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Could be bad fuel or injectors going bad.
Whaleyman is offline  
post #3 of 3 Old 08-23-2017, 07:39 PM
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1989 YJ Wrangler 
Join Date: Dec 2006
Posts: 5,442
I wouldn't expect 3 injectors to fail at once.

Clear to codes and see what happens. Is it always the same ones?

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