my tune has gone to shit
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TECH Apprentice
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Joined: Sep 2007
Posts: 302
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From: Arlington, TX/ Ft. lewis, WA
my tune has gone to **** my car was tuned in texas around last july. i have since then drove the car up to Washington st. due my being stationed here. the car sat for about two weeks while i was gone due to training. when i cam back the check engine light was on and throwing four codes.
engine coolant temp sensor
o2 sensor x2
throttle respnose sensor?
mass air flow sensor
but the thing is the o2 sensors have been tuned out and it seems like the car has reverted back to a speed density tune or at least i think thats what you call it. i have tried to simply reset the codes thinking maybe the car would revert but that failed miserably. now im lookin for some solutions. should i go ahead and just replace said problem or does this sound like its something other than just wear and tear? any help greatly appreciated.
thanks dustin
engine coolant temp sensor
o2 sensor x2
throttle respnose sensor?
mass air flow sensor
but the thing is the o2 sensors have been tuned out and it seems like the car has reverted back to a speed density tune or at least i think thats what you call it. i have tried to simply reset the codes thinking maybe the car would revert but that failed miserably. now im lookin for some solutions. should i go ahead and just replace said problem or does this sound like its something other than just wear and tear? any help greatly appreciated.
thanks dustin
You beat me to that one, tunes do not change or revert back or anything else, the car is having issues. If it has been damp, check the connectors and grounds to make sure there is no corrosion build up.
Thread Starter
TECH Apprentice
iTrader: (2)
Joined: Sep 2007
Posts: 302
Likes: 0
From: Arlington, TX/ Ft. lewis, WA
started checking wiring and found a botched wire runnening to the etc. fixed that issue cleared codes. worked fine let the car sit about 2hrs or so and now the code is back on but only for MAF. so does that mean that its just bad or still look for more wiring issues?
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What if that fuse is not blown? My car was throwing those codes and the fuse was fine. Would throwing those codes give the car issues with starting when it's warm? When my car is cold it will fire right up and idle normal. When it's warm it wont idle for anything after starting it and sometimes idles really high when it does catch on. After it settles in it is usually ok. 
What if that fuse is not blown? My car was throwing those codes and the fuse was fine. Would throwing those codes give the car issues with starting when it's warm? When my car is cold it will fire right up and idle normal. When it's warm it wont idle for anything after starting it and sometimes idles really high when it does catch on. After it settles in it is usually ok.
It's cam only right now with the basic bolt ons. I am swapping heads this spring so the tune will have to get freshened up anyway. When I had it tuned though, the SES light was off for a few hours after then it came back on throwing the aforementioned codes. It's a pain in the *** trying to get it to start and idle on it's own when it's warm though. Thanks for the help though!