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E28 (1982 - 1988)

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  #1  
Old 08-24-2010, 08:23 PM
vickovacs vickovacs is offline
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Location: Westbank, BC
 
Join Date: Aug 2010
Posts: 9
Mein Auto: BMW 533i
High fuel consumption

Car sat for 5 years, and when started using it, fuel consumption almost doubled. Car is in great shape ( M series) and plugs, wiring, vacuum connections, air filter appears OK. O2 sensor has 120,000 km on it.
Any quick suggestions?
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  #2  
Old 08-25-2010, 06:49 AM
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catso catso is offline
catso
Location: Chicago
 
Join Date: Dec 2009
Posts: 2,960
Mein Auto: 2000 323i, 1988 528e
Quote:
Originally Posted by vickovacs View Post
Car sat for 5 years, and when started using it, fuel consumption almost doubled. Car is in great shape ( M series) and plugs, wiring, vacuum connections, air filter appears OK. O2 sensor has 120,000 km on it.
Any quick suggestions?
Clean the ICV, air flow sensor, and throttle body real well and look for deteriorated rubber boots, vacuum lines, etc. After sitting for 5 years lots of stuff could be affected. I'd put in a new set of plugs too.
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  #3  
Old 08-27-2010, 08:57 AM
vickovacs vickovacs is offline
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Location: Westbank, BC
 
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Mein Auto: BMW 533i
High fuel consumption

Thanks! Working on all the suggested checks as well as new plugs.
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  #4  
Old 08-27-2010, 11:12 AM
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catso catso is offline
catso
Location: Chicago
 
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Mein Auto: 2000 323i, 1988 528e
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Originally Posted by vickovacs View Post
Thanks! Working on all the suggested checks as well as new plugs.
Oh yeah, the Oxygen sensor is overdue. Look it up on Amazon, they're usually the cheapest source.
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  #5  
Old 09-18-2010, 02:19 PM
vickovacs vickovacs is offline
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Location: Westbank, BC
 
Join Date: Aug 2010
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Mein Auto: BMW 533i
O2 Sensor

Supplier sent me a four wire sensor, my 533i takes single wire O2 sensor. Du you think that I can hook up only the black wire ignoring the other 3 ? I got no response from supplier.
Thanks.....Vic
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  #6  
Old 09-18-2010, 02:47 PM
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catso catso is offline
catso
Location: Chicago
 
Join Date: Dec 2009
Posts: 2,960
Mein Auto: 2000 323i, 1988 528e
Quote:
Originally Posted by vickovacs View Post
Supplier sent me a four wire sensor, my 533i takes single wire O2 sensor. Du you think that I can hook up only the black wire ignoring the other 3 ? I got no response from supplier.
Thanks.....Vic
Two wires are usually for the heating element. If you can find the right one, it probably will work. Too bad because the one wire sensors are usually alot cheaper.
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