SURPRISE! SURPRISE! P0300 Reset itself?
SURPRISE! SURPRISE! P0300 Reset itself? My SES went out on its' own the other day. This was the RANDOM MISFIRE DTC that got set after I install a new cam with a 112 LSA. I thought my luck was running so good I even considered playing the POWERBALL, but today after the engine burped the SES came back on. I'm sure it's P0300 again even though I havn't checked it with AUTOTAP as yet. I'm willing to bet if it doesn't have a REAL misfire anytime soon the MIL will go out again on its' own. If it doesn't go out I guess it's time to contact Carputing?
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Joined: Apr 2003
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From: Maui, Hawaii
Re: SURPRISE! SURPRISE! P0300 Reset itself? Just like mines, it goes on/off when it wants too. I hooked it up to gm's tech 2 scanner and check out my misfire tables and it only misfires @ idle, when i rev the z up past 2k misfire table clears and reads zero. It doesnt bother me as long as i noe it doesnt have a real missfire.
Re: SURPRISE! SURPRISE! P0300 Reset itself? Any chance you disturbed the crank position sensor?
More info here: http://www.seattleautomotive.com/ckpdoc.htm
You may just need a CKP relearn.
Takes about 30 seconds to do.
Paul
More info here: http://www.seattleautomotive.com/ckpdoc.htm
You may just need a CKP relearn.
Takes about 30 seconds to do.
Paul
Re: SURPRISE! SURPRISE! P0300 Reset itself?
Any chance you disturbed the crank position sensor?
More info here: http://www.seattleautomotive.com/ckpdoc.htm
You may just need a CKP relearn.
Takes about 30 seconds to do.
Paul
More info here: http://www.seattleautomotive.com/ckpdoc.htm
You may just need a CKP relearn.
Takes about 30 seconds to do.
Paul
Re: SURPRISE! SURPRISE! P0300 Reset itself? The P0300 is a common code that happens frequently on cammed cars. I believe it has more to do with the choppy idle of the lower LSA of aftermarket cams but anything is possible.
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Re: SURPRISE! SURPRISE! P0300 Reset itself?
Just like mines, it goes on/off when it wants too. I hooked it up to gm's tech 2 scanner and check out my misfire tables and it only misfires @ idle, when i rev the z up past 2k misfire table clears and reads zero. It doesnt bother me as long as i noe it doesnt have a real missfire.
lesson learned: little things in the ignition, like partially seated wires or screwed up plugs can cause the condition. maybe not the only causes, but possible causes.
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