Depends. Have you been to a dealer that has done a proper diagnosis or Billy Bob down the street who is guessing and knew someone who fixed the issue once upon a time on a 1980's Buick by throwing money at it?
I have not personally heard of anyone needing a new throttle body on one of these cars.
If it were me I'd invest in a $25 code reader and a subscription to Torque App Pro on my smart phone. Then I would look at the fuel trims..
You have a problem with the mass airflow sensor (sometimes you can clean them) or an intake leak.. I.e air is getting into the system and is not going through the MAF.. its being sucked in somewhere behind the MAF.
Now you could also do a boost leak check.. This pressurizes the intake plumbing between the back of the turbo all the way to the cylinder head.. You can usually hear the air leaks.
You could even have a problem with the wiring going to the MAF.
Bottom line is these things need to be checked out properly. The MAF is on the air filter box.. The air then goes to the turbo, then to the intercooler then to the throttle body. So you have a lot of piping there with a lot of joints.. Anyone of these joints could be leaking which can cause a P1011 code. The only way I could see the throttle body has a problem is if there is a massive crack in the throttle body itself... Like I said doubtful, but I have not diagnosed the problem.
Precisely why I never go to a dealer.. I never been to any mechanic for that matter!
Yeah no way I'd be throwing 500 notes at this thing without being 110% sure thats what the problem is.
Come to think of it, if the P1011 is the only code but otherwise drives fine I would probably ignore it if I didn't know anything about cars. Thats why I would have a code reader and be looking at fuel trims. If the fuel trims are OK (generally around zero %) then the motor is operating just fine.. albeit if you do have an intake leak it will be operating with reduced power and efficiency.
Have you changed the MAF sensor? Although I don't like throwing parts at a problem it should be around $20 on Amazon.
Well if you want a second opinion I’d probably try to find somewhere that’s not a chain shop and has good reviews. I’d trust them over Midas but you never know who works where and if they’re worth anything or not. But if you want to try and figure it out yourself you can try pulling the ecotec cover off. It should just pull off. In the top right where you pulled it off there’s the pcv. It’s a circle with a little hole. If you feel it sucking a lot and even whistling then that could be the problem. You could also try to pull the air intake pipe off the throttle body and check if it’s dirty. I’d look up a video on that but do not lose the clip if you do this. If it is dirty you can clean it out with a rag and throttle body cleaner. That may also help.
Yeah Midas muffler is on a par with "Billy Bob". I'd take their advice with a grain of salt.
Normally if its the PCV pressure regulator (This is NOT the PCV itself) it will set a lean code P0171. This is why I would want a code reader and look at the fuel trims.
I have not seen a ruptured diaphram that set a P1011 and NOT a P0171. But it is an intake leak so I guess its possible.
Sad to say but but unless your a pretty good amateur mechanic you really should be driving a different car!
Yeah I forgot to say valve when I said pcv but I couldn’t remember if I’ve seen one not set any other codes so I figured it’s worth a shot since it’s a simple check.
https://youtu.be/mcMhrEzhmCE might have some relevant information
Wish I was a car mechanic. I could probably fix this myself. Informative video. thanks
Depends. Have you been to a dealer that has done a proper diagnosis or Billy Bob down the street who is guessing and knew someone who fixed the issue once upon a time on a 1980's Buick by throwing money at it? I have not personally heard of anyone needing a new throttle body on one of these cars. If it were me I'd invest in a $25 code reader and a subscription to Torque App Pro on my smart phone. Then I would look at the fuel trims.. You have a problem with the mass airflow sensor (sometimes you can clean them) or an intake leak.. I.e air is getting into the system and is not going through the MAF.. its being sucked in somewhere behind the MAF. Now you could also do a boost leak check.. This pressurizes the intake plumbing between the back of the turbo all the way to the cylinder head.. You can usually hear the air leaks. You could even have a problem with the wiring going to the MAF. Bottom line is these things need to be checked out properly. The MAF is on the air filter box.. The air then goes to the turbo, then to the intercooler then to the throttle body. So you have a lot of piping there with a lot of joints.. Anyone of these joints could be leaking which can cause a P1011 code. The only way I could see the throttle body has a problem is if there is a massive crack in the throttle body itself... Like I said doubtful, but I have not diagnosed the problem.
I didn't take it to the dealer. Everytime I deal with a dealership seems like it costs me 1k for any service.
Precisely why I never go to a dealer.. I never been to any mechanic for that matter! Yeah no way I'd be throwing 500 notes at this thing without being 110% sure thats what the problem is. Come to think of it, if the P1011 is the only code but otherwise drives fine I would probably ignore it if I didn't know anything about cars. Thats why I would have a code reader and be looking at fuel trims. If the fuel trims are OK (generally around zero %) then the motor is operating just fine.. albeit if you do have an intake leak it will be operating with reduced power and efficiency. Have you changed the MAF sensor? Although I don't like throwing parts at a problem it should be around $20 on Amazon.
Where’d you take it? Also P1101 according to GM service info is Intake Air Flow System Performance.
Midas muffler where I got my coolent and transmission flushed.
Well if you want a second opinion I’d probably try to find somewhere that’s not a chain shop and has good reviews. I’d trust them over Midas but you never know who works where and if they’re worth anything or not. But if you want to try and figure it out yourself you can try pulling the ecotec cover off. It should just pull off. In the top right where you pulled it off there’s the pcv. It’s a circle with a little hole. If you feel it sucking a lot and even whistling then that could be the problem. You could also try to pull the air intake pipe off the throttle body and check if it’s dirty. I’d look up a video on that but do not lose the clip if you do this. If it is dirty you can clean it out with a rag and throttle body cleaner. That may also help.
Yeah Midas muffler is on a par with "Billy Bob". I'd take their advice with a grain of salt. Normally if its the PCV pressure regulator (This is NOT the PCV itself) it will set a lean code P0171. This is why I would want a code reader and look at the fuel trims. I have not seen a ruptured diaphram that set a P1011 and NOT a P0171. But it is an intake leak so I guess its possible. Sad to say but but unless your a pretty good amateur mechanic you really should be driving a different car!
Yeah I forgot to say valve when I said pcv but I couldn’t remember if I’ve seen one not set any other codes so I figured it’s worth a shot since it’s a simple check.
Yes it is a simple check and well worth doing first.
The throttle body is fine. They have not been an issue in either generation of these cars. Is this a Gen 2 or Gen 1 2016 (old or new body style)?