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3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

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Old 03-14-2005, 10:27 PM   #1 (permalink)
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Guys, I have a 94 325is auto, today during driving the "check engine" light turned on and everything seems normal. I do realize that the car is due for an oil change and just wondering if that's the reason the light turned on or is there anything else could went wrong.
thanks a lot.
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Old 03-14-2005, 11:48 PM   #2 (permalink)
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When my check engine light comes on it says something on the computer in the center console. It could be alot of things, see what that says. There are some common things that can trip that and it will not hurt you to drive the car (Brake Light Circuit and such).
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Old 03-14-2005, 11:53 PM   #3 (permalink)
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Quote:
Originally posted by alienbust@Mar 15 2005, 12:27 AM
Guys, I have a 94 325is auto, today during driving the "check engine" light turned on and everything seems normal. I do realize that the car is due for an oil change and just wondering if that's the reason the light turned on or is there anything else could went wrong.
thanks a lot.
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Is it a "check engine" or just "check". The first one indicates a code is in the computer for some malfunction. There is a way to see the codes with the gas pedal. There might be a FAQ or do a search. The "check" light usually means something minor is wrong. If you have the OBC, it should tell you what is wrong.
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Old 03-15-2005, 12:00 AM   #4 (permalink)
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thanks. It's the "check engine" light under the speedometer.
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Old 03-15-2005, 01:00 AM   #5 (permalink)
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Quote:
Originally posted by alienbust@Mar 14 2005, 10:00 PM
thanks. It's the "check engine" light under the speedometer.
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I think you need to get your oil changed. Take it to a place that specializes in german cars. When you change your oil yourself (at least for me) the light's don't get reset to green. Meaning, read your manual. When all those green squares dissapear, you should take it in. I think it's just a gimmick to get us to take it to a proffessional and that they just reset the thing... Still, I think that it's the safest bet for you.
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Old 03-15-2005, 11:12 AM   #6 (permalink)
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"Check Engine" light comes on when there is an emission-related problem.
That light won't go away just by changing oil.

CHECK CONTROL - This is for the OBC (OnBoardControl)

CHECK ENGINE - Emission related problem

SERVICE INTERVAL - The green LEDS followed by Yellow LED followed by red LED.
This is for Inspection I and Inspection II.

Hope the above clarifies the confusion.

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Old 03-15-2005, 12:11 PM   #7 (permalink)
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Also the "CHECK" light for the OBC is yellow.

THe "CHECK ENGINE" light is red. Like explained earlier these lights are not related.

Based on the year of your car it is likely a faulty O2 sensor. Do the pedal trick to read the code. I bet it will read 1-2-2-1. Check it out and get back to us..
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Old 03-15-2005, 12:33 PM   #8 (permalink)
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Take it to autozone (free) or the dealer (not free) and have them pull the code...you can then figure out what is wrong.

It is emissions related and has nothing to do with your oil change...
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Old 03-15-2005, 01:34 PM   #9 (permalink)
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Quote:
Originally posted by alienbust@Mar 14 2005, 09:27 PM
Guys, I have a 94 325is auto, today during driving the "check engine" light turned on and everything seems normal. I do realize that the car is due for an oil change and just wondering if that's the reason the light turned on or is there anything else could went wrong.
thanks a lot.
[snapback]311599[/snapback]
turn your key to the fully ON position, but do not start the motor. Pump the gas pedal 4 times fast and your check engine light will blink out a series of numbers. (blink 3 times, pause blink 5 times, pause... you get the idea, there will be 4 digits in the code) You can compare this pattern to a list online or to the list in a Bentley manual. Most likely it is an o2 sensor.
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Old 03-15-2005, 08:04 PM   #10 (permalink)
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of course, it could be something as simple as washerfluid being low, mine has gone off for that before.
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