p0300 code
Oct 19, 2011, 12:59 PM
#1
p0300 code
throwing a po300 and yes it is missing at idle and probably while in gear also.
the deal is at cold start it idles just fine no miss at all afr at about 15.5 16 which i think is high? then once it starts to get about half way warmed up it begins to have a random miss with afr jump to 17-18+and often accompanied with a p0300/ good plugs and wire new coils. any ideas would be great!
the deal is at cold start it idles just fine no miss at all afr at about 15.5 16 which i think is high? then once it starts to get about half way warmed up it begins to have a random miss with afr jump to 17-18+and often accompanied with a p0300/ good plugs and wire new coils. any ideas would be great!
Oct 19, 2011, 01:03 PM
#2
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Oct 19, 2011, 04:38 PM
#7
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there is a TSB out there on the 5th gear syncro's causing the p0300 on the '03 and some '04 models. It could be that in the colder weather your getting this problem.
If it's not that then given your AFR values, I would also check the front O2 sensor to see if it's working correctly.
If it's not that then given your AFR values, I would also check the front O2 sensor to see if it's working correctly.
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Oct 19, 2011, 04:55 PM
#9
there is a TSB out there on the 5th gear syncro's causing the p0300 on the '03 and some '04 models. It could be that in the colder weather your getting this problem.
If it's not that then given your AFR values, I would also check the front O2 sensor to see if it's working correctly.
If it's not that then given your AFR values, I would also check the front O2 sensor to see if it's working correctly.
Oct 19, 2011, 10:11 PM
#12
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The p0300 code is set when the ECU, reading the crank sensor, notices a variation. This could be caused by an actual misfire or by the drive train banging against the engine. The ECU then starts shutting off fuel in an effort to eliminate the problem. Hence your AFR changing.
A p0300 at idle in neutral has got to be a real misfire.
A p0300 at idle in neutral has got to be a real misfire.
