This will be long because I can't think of many ways to give all pertinent info without typing it all out.
Our car had been having some of the normal stuttering problems that it seems we've all encountered. They were rare and never throwing a code. My wife called Friday afternoon and told me the CEL came on. I told her to go get it read immediately. Cylinder 3 misfire. They cleared it and I put it on my "Do Soon" list.
Friday night we had to go to the hospital because my wife is 8 1/2 months pregnant. On the way home at 12am the car has started running REALLY rough not wanting to rev higher. As we were getting off our exit the car dies. TCS, AT CEL all come on. I coast to side. Turn car off and it restarts immediately. Still running rough but I am able to baby it home. The car is stuttering, barely running, etc.
So I go first thing Saturday and buy 3 new coils for the rear bank and 6 new plugs. Put the 3 new coils on and all new plugs. Go to drive it and it's still running like absolute garbage. It's hard to pinpoint the cause, but I can get it to die and restart like the previous night.
So I look online some more...
Seems that the precats can get clogged, especially if you've had a misfire. I can't afford headers, nor do I need them on my family hauler so I figure to be safe I'll gut the precats. This should give me peace of mind in the future and solve this issue right?
So I spend Saturday night and all day Sunday getting the precats gutted and the exhaust back together. What a fucking nightmare. But I get it back together Monday afternoon. Go for a drive convinced they'll be good, and maybe I'll even get a nice exhaust note.
Nope. No change whatsoever. Same awkward idle. Same rough running. S me issue with dieing while driving. It does throw a CEL and I get P2110 for Throttle Actuator Forced RPM yada yada.
More checking online...
Could be a TB needing cleaned, could need replaced, could be MAF.
I cleaned the TB and no improvement whatsoever. Car runs awful.
I'm hesitant to buy a MAF because mine was cleaned recently and they can;t be returned if it's not the issue.
So will a bad TB cause ALL this? Stalling while driving, rough idle, terrible running in general? I can't afford to keep throwing money at this car hoping it will fix it.
Also, this one part did apparently break. It has coolant running through it and runs through the bottom of the TB. I'll obviously be calling the dealer tomorrow to order a new one but I have no friggen clue what to call it and don't want to be running my car around with it spewing coolant and the car running like shit.
Could that cause all these issues with the TB considering it wouldn't really be a vac leak? It will be replaced regardless but just curious because it is spewing coolant.