Throwing P0300!!!
#16
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There are way too many people in this thread that are confused.
PO300 is a well known Evo VIII problem code, and your searches and a couple of replies are in response to that.
The 4B11 should not throw random misfires, and the problem in no way correlates to the 4G63 issue. Your set of problems that is causing it is something completely different than the VIII guys.
PO300 is a well known Evo VIII problem code, and your searches and a couple of replies are in response to that.
The 4B11 should not throw random misfires, and the problem in no way correlates to the 4G63 issue. Your set of problems that is causing it is something completely different than the VIII guys.
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Hasn't come back (P0300), but its only been like 15miles at most since the reset, and this is the first time (at least that i've noticed) it has thrown the code. I never actually felt a misfire, I actually went to turn the car over last night leaving Los Gatos, and decided to reset my P0140 for my TP and noticed that the OBDII code reader had another code (P0300)...really freaked me out. Going to roll the car over to Mike and have a looksy at the plugs. I still have those extra plugs laying around so If my plugs are fouled hopefully we can swap them.
Last edited by HR2L; Mar 8, 2010 at 11:16 AM.
#21
I have seen this issue on a car with a set of DW 800cc injectors. Turns out, there was a faulty injector which DW happily replaced.
I am currently having this issue on my car as well. It runs fine under boost, but idles like crap. I have backflushed all of the injectors, gapped, and inspected all of the plugs. My next thing will be replacing the plugs. I really don't think it is a coil.
I am currently having this issue on my car as well. It runs fine under boost, but idles like crap. I have backflushed all of the injectors, gapped, and inspected all of the plugs. My next thing will be replacing the plugs. I really don't think it is a coil.
#22
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Just drop me a PM what time might be good (all day is good for myself). Figured it wouldn't take long.
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Good to know. What plugs did you replace them with? Stock? HKS? NGK? I cleared my P0300 when it first happened and have yet to see it come back again. I'm under the impression it was a phantom code. I will pull my plugs tomorrow (was crazy busy this weekend) and have a look at them. I already have replacement plugs ready if necessary (HKS M 45XL).
#29