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Pontiac Bonneville Questions

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Supposedly there is a bracket in the way to the actuator box causing the dash to have to be removed for repair. Can the defect be fixed without removing the dash?
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The gauges shows it getting to 240 before fans cut on why is it so high shouldn't it be around 190 to 210
After turning on the ac or driving and slowing down and sometimes even when going down the road it will just die.
Everything comes on when key is in egnition the car is throwing a anti theft deterent code. But there is no security light coming on at all!
Turning the key causes a clicking somewhere near glove box. No security light turning on so shouldn't be the key or security system but maybe. Changed starter already, checked battery cables and battery, fuses looking good and everything with the car is the same when i turn the key to start other than it not starting up. Been reading allot on the subject and people say check the ground connectors near the seats under the carpet. I did and no corrosion on either side but I,m curious about the rest in my car but can't seem to find them. Any help would be great.
it feels like the transmission is bucking
Door lock windows only work on drivers door when I put in drive driver door locks/unlocks only.
Early today my car was over heating then oil light can over and check gagers light come on as well.... so now my system monitor light is on what should I do.... my car is a 2001 Pontiac Bonneville
Just got 2 used tires put on not sure which side but now the car vibrates or shakes between 20-30mph and the steering is really off
aren't the output numbers on a MAF sensor supposed to change? mine are always 307.17 g/h.
the sensor is new . I also get error codes from p0101 to p0103.
iv'e cleaned it a few times, cleared codes and shortly after i'll get 1 of the 3 error codes back
is my MAF sensor bad?
car runs fine , then starts acting like out of gas. then this happens the short term fuel trim is at 0.0%the timing advance drops and fuel sys goes to open loop?
replaced maf sensor ,cleaned several times. don't see any vacume leaks. the canister in front left side under the hood makes alot of suction noise. can that canister be causing engine to stall or stop running? and error code p0103?
when you turn on key the fuel pump should run for a couple seconds then stop.
mine doesn't always stop . fuel pump is new. I got it because my last fuel pump did the same thing.
could it be that I got 2 new bad fuel pumps in a row? or is something telling it to bypass and it is just recirculating in tank?
not leaking fuel that I can see
car will run fine then acts like running out of gas, sometimes you can keep going sometimes no .when no it will try to start but as soon as it fires it dies. pump gas pedal fast and might keep it running for a little longer. let sit overnight and started like normal.
Have replaced fuel pump, fuel pressure sensor , purge valve , filter , maf , map , throttle , cam , crank , air intake (sensors) egr valve . sometimes the fuel pump just keeps running.
Could the pcm or ecm be the problem?
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