Question about BMW Cars & Trucks
Check engine light reset,now do I needto do a Basic Cycle Drive before emissions test?
Posted by Anonymous on
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Posted on Jan 02, 2017
have you had a diagnostic code check? if not i'd start there. it sounds like it might be a oygen sensor, but before spending money on it, it really should have a diagnostic test to tell you exactly whats causing the problem.
Posted on Nov 28, 2008
Under the hood, there is a fuse block. I believe it is on the driver's side of your vehicle. Open that box, and pull the "ECU" fuse. Leave the fuse out for at least 5 minutes. Put the fuse back in, start the car, and let it idle for at least another 5 minutes. Do not drive the car, touch the gas, or even look at the gas pedal for these 5 minutes, as the ECU is remapping itself. This will properly reset the ecu and clear the codes. After this you may drive the car.
Posted on May 28, 2009
I dont think it matters how far you drive as long as it gets completly warmed up and then gets completly cooled down.
It sounds like you already know this but But for other readers benifit I will add that there are some details that can make the process quicker.
this only pertains to 1996 on up vehicles that the check engine light is NOT illuminated.
When preparing for emissions tests after unhooking your battery, there are readyness tests that have to be completed before your truck is ready to be tested.
except for one thing, they hook up to your trucks computer and see if your computer has been reset. if so they confirm that your truck has ran its readyness tests.
Thus if there were any problems then the light would be on.
Then it dosnt pass
The pattern that I have found that works the best to complete the most tests, is
I use this dirve pattern all the time and 90% of the time It will run the tests it needs to pass.
If you havent unhooked your battery or reset your computer recently, and your check engine light is not on then you dont have to worry about any of this information, your car should pass emissions test.
Posted on Oct 30, 2009
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