P0300 helpp

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Sep 20, 2009 | 04:35 PM

Nasty99TA

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From: Houston

P0300 helpp

Ive been having this code pop up about once every couple of days for misfiring. I changed the plugs and wires and dont know what could be causing it. I have Corsa cat back.

And my car is running really hot compared to my friends vette, mines around 215, what could be causing it to run really hot?

Sep 20, 2009 | 09:23 PM

ALL UC2

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cats clogged? headgasket could cause both of those problems.....plugs look ok? no water in the oil???

you have plenty of coolant?

Sep 20, 2009 | 10:15 PM

Nasty99TA

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From: Houston

Yeah no water in the oil, so not a head gasket and the plugs are good i just changed them maybe a 1000miles ago.

I just dont know what else to check?
I ordered a 160 thermo? Maybe its a messed up thermo, not sure thats why im turning to yall ha

Sep 20, 2009 | 10:50 PM

pastvertical

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From: soFlo

u need a tec2 to see what cylinders have the misfire. so- also could be a cloged injector. or a vacuum leak. .. but u have scan it first... and foremost.

Sep 21, 2009 | 12:18 AM

Nasty99TA

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From: Houston

Alright i appreciate all the help guys, just tryin to figure out whats the dealll

But yeah i think im gonna take it to my tuner this week, so hopefully he can scan and see where the problem is, was just hoping to get a little more info from yall on what to expect!