So this morning I went out and started my car to let it warm up before work. It was about 15 degrees outside. I didn't notice if the service engine light was on, but I noticed it about 10 minutes down the road on the way to work. I'm gonna go to autozone to use a code reader. But do u think the cold couldve caused this?

 

 

I KNOW P0300 lol the random code that comes and goes unless your wipe it. No seriously scan it who knows it could be the lovely p0136 code.

 

It doesn't help that lastnight on my way home from work, a dump truck ahead of me dropped a chunk of frozen mud, that banged around underneath my car. Thing is, I didn't see a the light on when I went to he gym later in the evening. I'm wondering if that's something that couldve caused it. I'm asking around my battalion t see if someone has one of those car doctor things so I can read the code. I really don't feel like waiting til tonight to find out at autozone.

 

Do a search for "Creeder" it reads and clears codes for a reasonable price, I keep one in my EVO. Comes with a booklet with all the possible codes, very easy to use.
That big chunk of frozen mud, might have hit your O2 sensor and pulled a wire, I would look at the rear one.

 

If it makes you feel better, my service engine light comes on every cold morning because of my cams. Same misfire code everytime, P0300 I think. Get a scanner from autozone, I paid $100 for mine, works pissah. I also think autozone will scan your car for free.

 

Well speaking of which, I had my 280 cams installed about a week or 2 ago and I'm pretty sure that this morning was the coldest that's its been sice then

 

What kind of cams do you have?

 

Mine were designed by DTM and made by Comp. They're 280's

 

You may try bumping your idle up to around 950 rpms or so, I used to get a P0300 at idle quite a bit, bumped my idle up and no more P0300 code...

 

or instead of buying a obd reader...purchase a tactrix cable...and evoscan...and be able to log your car...and be able to view and clear diagnostic codes...

 

If I had a laptop, I wouldve already bought that stuff and be doing that haha. But I went to autozone and its a p0300 code.

 

If I had a laptop, I wouldve already bought that stuff and be doing that haha. But I went to autozone and its a p0300 code.

 

I get the misfire code every now and then. I use to use my friends scanner to clear it, but now i just let it clear itself after a few days. I should invest in my own scanner though.

 

There's a code fix now that kills the P0300 code. I read about it here about a month ago.