RandySC400

Hi everyone, my car is driving me insane right now...I just replaced my throttlebody and I cleaned it...which helped...but now my car is bucking really bad at certain mph...What is the Trac Control Adjustment for? It has an adjustment just like the TPS...but when I turn it it does nothing. Has anyone else had this problem? I have my TPS adjusted kinda high...idles at 1000rpm...under that and the car runs very rough...and backfires while driving if stepped on, so its at 1000rpm at idle and in gear. Please help me...I'm running out of ideas...Thanks for any help.

ICONYQ

iTrader: (3)

check you MAF and make sure it is plugges in. Also check your 02 sensors...they could do this right before they throw a CEL. How did you clean the TB? Did you spray into the TB with the car running because that is fine except it kills your plugs...

JspecSC3

iTrader: (4)

bcrowley

Can I see a picture of where the MAF is??

RandySC400

I removed the throttlebody and used carb cleaner to clean off all the built up carbon...what a pain in the *** that was...vacuum & water line! The car is running fine besides the bucking...I'm going to check the codes tonite to see if the o2 sensor...I think you can clean the MAF too with some carb cleaner...I'll try that too, because it is plugged in. (The MAF is located right after your air filter,its a large blackbox with a plug in it.)

ICONYQ

iTrader: (3)

okay...well if you cleaned the TB then I would check to see if your )2 sensors are okay but I would really look at your plugs. It would kill the plugs...

RandySC400

Thanks...I'll pull the plugs and see.

ICONYQ

iTrader: (3)

post a pic of them or post what condition they are in. Also check all your connections lke the disti, plugs, etc.

RandySC400

My plugs were black and i replaced my coilpack....then my cats were glowing red!!...plugged cats...so i need new cats...but,what causes plugged cats?

shajbot

iTrader: (3)

Engine running rich, unburnt fuel contaminates the plugs and burns the cats.

Jewcano

iTrader: (4)

When my car bucked at 40ish mph, I found out it was the air filter. Granted mines aftermarket and the brace that held it in-place shifted and the filter partially fell off the mount, and dirty air was allowed in. Put the filter back in place, and adjusted the brace, and wallah done works.