02 sensor codes adn bimmersport automotive

dubzino · 01-08-2011, 02:34 PM

Recently my bmw battery light was comming on once and a while . Anf then shortly after I started getting o2 sensor codes for the pre-cat sensors. I took it to bimmersport to have it checked. ANd they were like " the ecu needs to be re-programmed". And if that doesnt work you will have to changed alternator and o2 sensors." So I said ok fine. They reprogrammed it and no lights have come back but since reprogram the idle rpm is low around 5-600. And instaad of getting over 500km a tank, i am gettings like around 300km. So it must be running extremley rich. Can this mess up my car if its running to rich? Is it possble they just reset the ecu to accept the values that were tripping off the dash lights? . It doesnt feel right. I think I should of just changed the o2 sensors. They are saying to brings it back to have a look.

biginstreets · 01-08-2011, 02:37 PM

bring it to another shop and see what they say.

dubzino · 01-08-2011, 03:06 PM

Now I am seeing that running a car too rich can harm your engine and cats. Would there be any damage done after a week ?

1bmw1 · 01-08-2011, 05:34 PM

I doubt that you did any significant damage. Just take it to another shop, or take it back to them to look at. I would try and get a guarantee of some sort though. You don't want to be changing every part to fix one.

dubzino · 01-08-2011, 06:06 PM

Ya I know what you mean. I have seen mechanics in the past that pull that kinda stuff.

dubzino · 01-08-2011, 07:50 PM

Call it a fluke. But I go to check my alternator voltage since my car has been acting funny after the ecu reset. And the voltages are jumping around from 14 down to 13 ,12.9 just at idle. It seems all they did was turn of my dash lights but all the problems are still underlying. I wonder what the hell these guys did? Its like a constant power drop ever few seconds which is what it was doing when the bettery light was on. This is a joke. My other beamer that I had we always took to the stealers and never had a problem. This is what I get for going indy I guess. You may pay extra with them but in the end you dont have to keep coming back.

Eurostyle · 01-09-2011, 12:22 AM

ROFL...By reseting the light, all you can do is that...Wont do anything else. If the problem comes back, the light will come back on! Might take a while tho. I dont see why you didnt change the O2 sensor anyways, it it comse on as a code, its only a matter of time untill it happens again. It will affect your gas milage, and is part of regular maintenance...Do it right, change everything that needs replacing.

dubzino · 01-09-2011, 09:13 AM

I know but I was just going according to what they said needed to be fixed.

dubzino · 01-09-2011, 09:15 AM

Also they didnt just reset the light. I have a code reader that can do that lol. They siad the ecu needed reprogramming. It took an hour to reprogram it and $160 to mess up my car.

Michel · 01-09-2011, 09:36 AM

so take it back and do the recommended fixes they told u to do if the problems persisted...

dubzino · 01-09-2011, 09:58 AM

Yes but the lights never came back on. ? I took to my regular mechanic and he checked the voltage of the o2 sensors . He checked the voltage of the alternator.All values are incorrect and he doesnt understand why it is not tripping off the dash lights like before I went to them.

1bmw1 · 01-09-2011, 08:04 PM

I don't quite understand why would one need to reprogram an ECU for that? If bimmersport worked on your car then they would know what was done so i would suggest you take it back to them to resolve the issue. No sense in getting more techs to look at it for now since you're not 100% sure what was done initially. I think if you got the 02 sensor code in the first place then chances are that they need replacing.

dubzino · 02-20-2011, 09:16 AM

UPDATE: Well after all it turns out they did reset the dme properly and did what they were supposed to do. I had it checked out again and all is well. They were very professional and knowledgable of my vehicle. Very good guys. Thanks again guys for helping me out!

hamant · 02-21-2011, 11:45 AM

Quote:

Originally Posted by dubzino

UPDATE: Well after all it turns out they did reset the dme properly and did what they were supposed to do. I had it checked out again and all is well. They were very professional and knowledgable of my vehicle. Very good guys. Thanks again guys for helping me out!

so what was the problem?

dubzino · 02-22-2011, 07:44 PM

Had the incorrect battery in the car. I dont know why they didnt see that in the first place but ahwell.