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Hello everyone.
I wish I was here for a good reason. I have a problem with my car and don't want to take it in. Eventhough it is still under the factory warranty.
It keeps throwing the P0300 code. I have replaced all the ignition componets and plugs as well. It idles like my other car that has big cams in it and surges and jerks under light load while crusing. Heaver throttle it seems okay though. The new plugs and coil didn't help at all. It always starts right up and after a few seconds it starts to lope and run like crap. It has never died though. Anyways hope you guys can help. It's not a bad little car.

welcome to the board. sorry to hear of your troubles.

if you have replaced the wires and plugs. then you should probably take it in, even though you don't want to.

i guess you are aware p0300 is multiple cylinders misfiring. coils typically don't go bad early on these cars. but if you would like to replace that, its another option.

good luck.

I did replace the coil with an MSD.

Here is a pic of my cars:

did you replace your injectors? If so I would just take it in. Sounds like it could be an ECU problem or something else. (i wouldn't know what though.)

Welcome to the forum!

Questions... what types of plugs are you running?

Bosch super plus. They were cheap. Napa wires and MSD coil. But I think all of the stock equip. is fine I think it's something else. After all of that it did not change the way it runs. Maybe the crank sensor ot something.

Try disconnecting your battery for a few mintues and reconnecting it to reset the computer.

When you do that ^ Pull your fuel pump relay from under the hood. It will help to reset the computer fully.

Canada wrote:When you do that ^ Pull your fuel pump relay from under the hood. It will help to reset the computer fully.

to reset the pcm quickly....
Disconnect battery
Remove fuel pump relay
Press brake pedal for 30sec
Reinstall fuel pump relay
Reconnect battery.....


Welcome by the way....

I had the battery disconnected twice already. Once when I did the plugs and wires and again when I did the coil. Same result the SES light stays off for a few days with it running like crap and then it will come on again and go off a few days later. I am reaching the end of my rope and it is a short rope.

that means its time to take it in.

Welcome to the site!

You are running Bosch plugs!?!? Get some champs or NGK's, regular coppers. Could be the Napa wires...

bosch does make a copper plug, which is the one he is running i believe.

any set of wires should be good and typically napa has some quality stuff.

Nothing of what I have done has effected the way it is running!
It does start quicker with the MSD coil though. I don't think it is ignition related. I am going to borrow a timing light and test all of the cylinders and see what I come up with.
I was told a crack in the intake manifold is a problem or the rubber boot at the T.B. Any thoughts on that?

a leak like that would cause a high idle. i dont believe it would cause what you are describing, but its always worth a check when you have problems.

the bellows tube (rubber piece between TB and intake manifold) are known to crack. you can start spraying around with carb cleaner and if you notice a change in idle then you found your problem.

Welcome to the site. Nice rides.

Thanks.
I guess since I can't ever get a phone call back from the dealership, I am going to take it down there and tell them "here it is you fix it" and gat a loaner or rental.