Hi LVC, from south jersey and could use some help....

lastonestandin

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Hey LVC, i recently purchased a 2003 LS 3.9 V8,.....beautiful car buuut as im learning from the car itself and searching on line, these cars CAN come with a load of problems!!!....
I would like to hopefully write up a better more in depth post of what main issues i am having with the car in the very near future in hopes that your community can shed some light on them.

Once my mechanic gets back to me with the specific codes and what not I will be reaching out to you guys,,,thanking you in advance.
 
OK OK....so my mechanic was able to get back to me with the final codes that my car is throwing. All seem to have to deal with the drive by wire/Throttle body. Well thats what i can gather after the short amount of time of goggling and reading on this site.

The codes are as follows:
P2135 Throttle/Pedal Position Sensor/Switch"A"/B" Voltage Correlation

P2110 Throttle Actuator Control System- Forced Limited RPM

P2107 Throttle Actuator Control Module Processor

P2100 Throttle Actuator Control Motor Circuit/Open

P2106 Throttle Actuator Control System-Forced Limited Power

During cold starts, these codes or whatever are forcing the car to enter that stupid fail safe mode...and then usually once the car warms up, its totally fine basically...but with an CEL light on.

I recently replaced, meaning like a week ago, the coils and spark plugs already, as a first attempt as fixing this issue...the car ran a little better, but still was having this reoccurring codes/cold start up failsafe mode issue.
Me and my mechanic just recently tried a replacement throttle body, but the car still had the same codes and issues...the throttle body was NOT NEW, BUT a clean looking used part. MY mechanic said that when he installed the throttle body though he noticed that one of the tubes had a very small like what looked to be a rust hole in the tube. So he pulled the rubber hosing down further to cover it, which i figured wasn't a prob, and im just mentioning it for the sake of things. Since then, i have taken that throttle body off (to send it back since it didn't fix issue) and put back the original, which obviously still has all the codes. My mechanic said that he believes that it isn't the throttle body, being that we did replace it and the same thing occurred, regardless of the small hole on he attached metal tube. He said it can prob only be two other parts, the accelerator pedal switch, or the PCM. In his history though, he said he has never had to replace a pedal switch, because it is usually always the throttle body. ANNDDD im really hoping it isn't the most expensive part, the PCM. So im at a stand still with this dam car that i just got guys, and honestly dont know what to do next. Should i try another throttle body making sure there are no small imperfections??? Skip to the accelerator pedal switch??? And then try the PCM last?!?!?! Me and my mechanic really dont want to "throw" parts at the car and just try to figure the issue out that way, so HONESTLY ANYYY HELP/ADVICE that you guys can give would be greatly appreciated. I dont want to have to sell this car dirt cheap because i cant get this stupid problem solved.... Thanking you in advance..
 

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