well i just installed some pacesetter lt's and a new ory last friday. The car was running fine. sunday i did an oil change and used royal purple. now the car is missfiring like crazy and running like crap. i cant even really drive it, its that bad. the idle is also all over the place, i have a small cam but my car was tuned a little while back. anyone have any suggestions of what might be going on?

 

Check for exhaust leaks around the header flange. Using a piece of long tubing about the width of a pen, snake it in and around the flange and put your ear to end of it. The tube helps amlipfy the sound that its pointing too. Also check for loose or burned plug wires and make sure they aren't contacting the header tubes. And BTW did you use those **** paper gaskets in the pacesetter kit or quality GM replacements?

 

i didnt install the headers, a shop did. i cant hear any leaks...

 

is the coolant temp sensor plugged in?

 

yea man its plugged in.

 

thats the first thing to come to my mind. i left mine out

 

yea man i wonder if it has anything to do with how i dont any rear 02 sensors anymore.

 

sounds like you may have a loose/burned plug wire. Are you throwing any codes?

 

yea my ses light is on. my car ran fine for about a day, then started acting up and has gotten worse since. im not drivin it anymore till sat when i get it checked out and re-tuned. the more i accelerate the more it missfires.

 

go get it scanned. I would bet you have a burned or loose plug wire. Make sure the front o2s are plugged in and didnt burn up as well.

 

thanks man. Im gonna go get it scanned tomorrow. what about my plugs? could it be them? Im runnin tr6's but i put them in not that long ago.

 

Ive always ran tr6 plugs in mine, but thats because im spraying. Tr6 plugs for you arnt needed, but they arnt going to hurt anything or cause any problems. Like i said im willing to put money on it that you have a loose/burnt plug wire. You can even check to see before you take it and get it scanned. Just check out all the plugs wires, and make sure they are on all the way. If you cant find the problem, then go get it scanned.

 

i will look at them tomorrow before i get it scanned. by the way im sprayin too, thats why i have tr6's.

 

got ya! How much?

 

was 75 shot, just put the 100 pill in the other day and filled my bottle this morning. I wanted to try it out today, but then the car started doin this crap.

 

Did you check the plug wires yet? If the shop did the install bring it back and ask them why your car is messed up.

 

Im sure its something small like a plug wire. If not go to the shop and get your money back!! BTW, your going to love that 100 shot

 

yea im gonna take it back to the shop.

 

let us know what the problem was when you find out.

 

update! my front driver side o2 was bad. replaced it, checked my plugs and omg they were horrible. replaced them and it runs a lot better now.