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3-Series (E21, E30) Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.

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Old 10-23-2003, 02:33 PM   #1 (permalink)
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HI,

In my 84 325e the temperature on the computer started showing -22. I disconnected the battery overnight with no luck, still -22. Any ideas

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Old 10-23-2003, 02:54 PM   #2 (permalink)
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You need to change the temperature sensor in the L/H front of lower spoiler.

Check in the brake cooling vent.

Later
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Old 10-23-2003, 09:25 PM   #3 (permalink)
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yeah, i wouldn't be suprised if the temp sensor is faulty or got unplugged... it's located down on the bottom of the front valence on the driver's side... it's just a little metal knob. get under the car & find the wire for it, see if it got disconnected, since it unplugs right there for when you wanna remove the lip on the valence

hope that helps
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Old 10-23-2003, 10:18 PM   #4 (permalink)
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i am not sure if i am right or wrong, but just my 2 cents.

if the wire came unplugged, would the temperature even show up on the computer? i doubt it would, but then again, who knows. my suggestion is that you need to replace the temperature sensor in the area both of the people b4 me mentioned, but if that doesnt do the trick, i would have to look like this
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Old 10-24-2003, 03:09 PM   #5 (permalink)
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-22 F. is the indication when the sendor is damaged, worn out, or disconnected.

Here is a diagram of the sender on an e24 so the fuse is different.



For the lurkers here is a link to the OBC, On Board Computer, operation.

http://home.att.net/~ebaines/e28_obc.htm

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Old 10-24-2003, 07:31 PM   #6 (permalink)
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Quote:
Originally posted by KC Ron Carter@Oct 24 2003, 05:49 PM
-22 F. is the indication when the sendor is damaged, worn out, or disconnected.
yeah... that's what i was gettin at... that's basically the need-to-know information right there... the rest (wiring diagram) is greek to me heh
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