Question about BMW Cars & Trucks
Engine light comes on intermittently; when driving on city streets, car surges intermittently. Help!
The engine light is telling you of faults in the systems it moniters Have the fault codes read and replace faulty items.
Posted on Apr 26, 2013
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Posted on Jan 02, 2017
SOURCE: intermittant check engine light
The only way to find out what the problem is is by doing a scan of the car computer module using an OBD code reader.
The codes returned will tell you the cause of the problem.
Posted on May 28, 2009
Not an intrigue, sorry. run over anything lately? A pinched cooler line could cause this. Or maybe just an old, gummy transmission.
Posted on Apr 06, 2010
SOURCE: P0420 code
This means that the secondary O2 sensor detects that the catalytic converter
isn't working as efficiently as it should.
This engine code can be triggered by any one of the following:
1.) The catalyst in the catalytic converter is cracked, clogged, or otherwise damaged.
2.) The secondary O2 sensor is malfunctioning.
3.) There is an exhaust leak.
4.) The computer unit is faulty.
Posted on Aug 24, 2009
If EGR was out your engine light would stay on!usually hi way drive is a whole new emission game sensor work 100% different that city drive you have a O2 sensor problem don"t Get$$ the problem when if you say it only will do it on highway then take it on highway with OBD 2 in run scan mode have a passenger observe it this will give the the proper code you will need to peg it cheers!
Posted on Dec 27, 2008
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