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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 03-08-2004, 11:48 PM   #1 (permalink)
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Having a wierd problem here.. not sure if its considerd a problem or not.

Previously, when my car is warm up to the optimum, the needle will be slightly below half.. and that will be constant all the way whenever and where i drive, no matter in highway or traffic jam.

Now, since my car has been swapped with a Manual Gearbox, the temperature gauge STILL maintains slightly below half... BUT, when ever i drive in highways, the temperature will drop, (the needle drops a few mm), this will also happen when its raining... to my assumption, the car is moving at high speed constantly on a highway with lots of wind going into the engine bay, so it may cool down the engine compared to being in a traffic jam. But this didnt happen on my car when i had my Auto box.. only when now, that my car is a manual.

One more thing,
I just replaced my stock box filter to a cone open pod filter. And the case above has became even more apparent. I was on the way back heading to home and it was raining. So, obviously the air is colder. The thing is, the needle/indicator drop so much that its at the (from the BLUE/COLD indicator box) second box or [ ] (watever u call that).. WIERD man... only when i reached puchong and drive among the traffic at slow speeds, my temp went up to normal again.

Now, my question is,

Is this completely NORMAL???? i feel like its quite abnormal..!!
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Old 03-09-2004, 10:00 AM   #2 (permalink)
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When you traded trans, did you change the cooling system as well? The rad. in an automatic is usally larger than in a stick because it has the temp of the trans to contend with. A manual trans will run cooler than an auto. Also, if the engine is getting cooler air to breath than it could also run a little bit cooler as it will run more effiecently.

Your assumptions seem correct. It is better to have it run a bit cooler than to run hot.
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Old 03-09-2004, 10:37 AM   #3 (permalink)
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I have the same problem rcently with mine, but mine is a 5spd stock. Does it take a while for it to get to normal temp when driving around town? I'm gonna try replacing my thermostat and see if that fixes it.
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