Pontiac Problems? Ask a Mechanic for Answers ASAP
Hello my name is ***** ***** I can help you. Please give me a few minutes to review your case and code you have.
Is this the 3.8l or the 5.3l?
LOL. Your code is for the MAF sensor. You need to verify it is plugged in good.
Oh ok, it could be very likely the rabbits chewed into some wires somewhere. I have experience dealing with rodent damage under the hood. Since the code is for the MAF sensor, I would inspect all the wiring up to the sensor. Here is a pic of where the sensor is located.
#2 in the pic is the sensor.
Simply find the sensor and check it out for chew marks. Then follow the wiring back as far as you can. Check the wiring for chew marks.
Ok good luck and let me know what you find or if you need more help.
Have you looked at the car yet?
Do you still need my help?
If there were no signs of chewing then why are they soldering and heat shrinking??
I don't replace wiring harnesses unless they are burnt. You can always repair them. Lets see if they can resolve the issue by making good connections
Just remember, your MAF sensor is critical to the performance and driveability of your car. It stands for Mass Air Flow. It meters the amount of air coming into the engine and then the computer determines how much fuel to inject.
Does your car have an electronic throttle? If you are not sure, do you have a traditional cable that goes from the gas pedal to the throttle body? Do you have a check engine light on? Have they tried clearing the codes and see what comes back? I need more details or I may answers may not be helpful enough. Do you have a scan tool or able to stop by autozone for a quick scan?
According to the wiring diagram on your car, you have an electronic throttle. I highly recommend you have the ETC relearn performed. It requires a good scan tool with the ability to perform this task. I have performed it on a few ETCs that were surging up and down. 50% of the time it will calm things down and the engine will run as desired. What really concerns me is the dying in drive when coming to a stop. This usually indicates a vacuum leak or idle control malfunction like a malfunctioning IAC motor. Also, one cool trick to test for vacuum leaks is spray brake cleaner on/around intake gaskets, EGR, and other intake components. If the idle changes at all, you have a vacuum leak in that area. If it was me, I would try doing both of these tasks before doing anything else.
I feel your pain. I will do my best to help you resolve the issue. Just don't give up. I will try the best I can to respond to you through the day, but please keep in mind I also have a full time job so I can't respond quickly right now. Let me review your codes and get back with you in a few. Thanks
Thank you for being so understanding. Aftermarket parts are still ok to use, you just have to run the recalibration procedure with the scan tool. I have all the codes you gave wrote down and would like to do some tests with you when I get some free time today. There is a lot we need to test. Mainly, I am concerned with the app sensors 1 and 2. The codes suggest a disagreement between the two. It would be really helpful if there was anyway you could have the recalibration done on the throttle valve and app sensors first though. However, I understand you may not be able to achieve this goal.
Sorry it is taking so long, been very busy today. Let me check
According to the wiring diagram both app 1 and 2 are located inside one box. It is located under the left side of the dash. Here is a pic.
It is close to the brake pedal position sensor
Basically, it is the sensor on the gas pedal. Ebay has one for sale if you need a picture reference. The item number is *****
Don't take it mechanics who tell you what that guy told you. He is just making up stuff. You have to have the recalibration procedure done. You can take it just about any mechanic that has a good snap on scan tool. Doesn't have to be the dealer.
Ok, let me know how it goes. Make sure you tell them you want a throttle valve relearn and a accelerator relearn done. They may be one in the same.