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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 01-22-2013, 04:09 PM   #21
ac_2007
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Block heater. Does the E46 have one?

If so, use it.
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Old 01-22-2013, 04:25 PM   #22
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http://forum.e46fanatics.com/showthread.php?t=621330

Done and done.
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Old 01-22-2013, 04:38 PM   #23
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Suggest you read the first link below in my signature.

I did not hear any mention of the DISA O-ring or DISA being inspected, this is a big cause of cold start misfires after the car has sat for overnight or even longer.

Also you need to make sure your engine is not running chronically cold, this can lead to excessive carbon build up that causes cold start issues as well.

Read this thread - http://forum.e46fanatics.com/showthr...ghlight=report

Also make sure your engine coolant temp before you start the car is at or below ambient temp, if higher, this is an issue that may need to be addressed.
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Hidden OBC Menu - Check Voltage, Temps, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

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Old 01-22-2013, 05:04 PM   #24
Sweetness
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Thanks for all the responses guys. Especially to Trizzuth's. Mine's basically the same way. Nowadays when I re-arrange my car I always take it for a spin around the block. A block heater sounds like a lot of work to be only used a couple days a year. Probably expensive too. Should I switch to German Castrol? Maybe use the BG Moa additive. Will that help?
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Old 01-22-2013, 05:08 PM   #25
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DISA will be getting done soon. Thermostat is 18 months old~ 10,000 miles.
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Old 01-22-2013, 05:19 PM   #26
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Does not matter how old the thermostat is, you need to check and verify the engine coolant temperature.

The only way you can accurately condemn a weak thermostat is during the colder Winter months.
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Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

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Hidden OBC Menu - Check Voltage, Temps, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose fan switch O-ring - BMW #13621743299

Last edited by jfoj; 01-22-2013 at 05:19 PM.
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Old 01-22-2013, 05:23 PM   #27
Sweetness
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In September it was reading 91 C. I'll try again when it gets above 20 degrees outside. Also, looked at the block heater post. Looks easy and affordable. I might do it.

Last edited by Sweetness; 01-22-2013 at 05:24 PM.
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Old 01-22-2013, 05:46 PM   #28
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I'm in Pittsburgh too. Pretty cold this morning. Worse tomorrow. I'll have to ask my daughter how it started when she gets home.
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Old 01-22-2013, 05:50 PM   #29
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In September it was reading 91 C. I'll try again when it gets above 20 degrees outside. Also, looked at the block heater post. Looks easy and affordable. I might do it.
Hey I mean if you've got a garage and an extra $140 laying around, you've got nothing to lose.
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Old 01-22-2013, 05:50 PM   #30
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In September it was reading 91 C. I'll try again when it gets above 20 degrees outside. Also, looked at the block heater post. Looks easy and affordable. I might do it.
Once the ambient temperature gets above about 70F, then a soft failed thermostat cannot really be detected.
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Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temps, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose fan switch O-ring - BMW #13621743299
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Old 01-22-2013, 05:56 PM   #31
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Installing that oem block heater will probably be the easiest DIY you ever do. Unless you concider washing windows a DIY. For extreme cold weather,a block heater is an exellent upgrade. If you can't find one then PM me and ill send you the link.

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Old 01-22-2013, 07:14 PM   #32
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Thanks for all the responses guys. Especially to Trizzuth's. Mine's basically the same way. Nowadays when I re-arrange my car I always take it for a spin around the block. A block heater sounds like a lot of work to be only used a couple days a year. Probably expensive too. Should I switch to German Castrol? Maybe use the BG Moa additive. Will that help?

Along these same lines (so technically not a hijack?), my car goes into the garage just before the first snow and stays there until the end of March. However, not being able to stand this situation for more than a month or so, I take it out 2-3 times during the winter and drive it up and down my street for 30 minutes, then put it away. So my question is - do you think this is enough time, in first and second gears only, to fully warm the oil up and boil off all O2? I cannot go beyond my little street, as the car is not insured during the winter
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Old 01-22-2013, 07:24 PM   #33
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Is there any way to hide the engine block heater plug? It looks fugly sticking out the front like that.
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Old 01-22-2013, 07:31 PM   #34
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I recall someone actually putting a 12 Volt heater on a 5 series and running it off battery on a timer. I cannot recall if they put an additional battery in the car or all the details, if I can find the info I will post it.

The Ultimate Engine Heater Setup - http://www.m5board.com/vbulletin/e39...-heat-s62.html
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Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temps, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose fan switch O-ring - BMW #13621743299

Last edited by jfoj; 01-22-2013 at 07:34 PM.
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Old 01-22-2013, 07:33 PM   #35
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As long as the crank speed is consistent to normal temp crank speed then you should be fine. Everything is very very cold around 0 degrees for an engine and starting is is a challenge. It's normal to have weird noises at that temperature.
My e30 does not like to start in the cold. It'll start but it sure doesnt like it. Haha. My e46 is much better. It might be a little loud at first in cold temps but all is well. Totally normal.
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Old 01-22-2013, 07:49 PM   #36
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Just remember to unplug all this stuff before driving away.

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Old 01-22-2013, 07:58 PM   #37
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OP the oil you are using is fine. The electronics appear to be slow because that is the nature of the displays BMW uses. Sounds like your car starts fine. Don't worry about it. It takes longer to warm up in cold temperatures. This is normal. Cars don't care about wind chill when parked.
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Old 01-22-2013, 08:19 PM   #38
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Along these same lines (so technically not a hijack?), my car goes into the garage just before the first snow and stays there until the end of March. However, not being able to stand this situation for more than a month or so, I take it out 2-3 times during the winter and drive it up and down my street for 30 minutes, then put it away. So my question is - do you think this is enough time, in first and second gears only, to fully warm the oil up and boil off all O2? I cannot go beyond my little street, as the car is not insured during the winter
Let it warm up in the driveway before driving until the heater is toasty and then go for a short drive up/down the street.

Low speed driving lets the oil warm up quicker is not much airflow compared to freeway cruising but if you really want to know then install an oil temp gauge

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Old 01-22-2013, 08:34 PM   #39
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Having an oil temp gauge and living in an area with a lot of traffic (albeit a cold one this time of year), it takes a LONG time for oil to heat up under most circumstances, regardless of ambient temp. I seriously doubt driving up and down the street warms it up fully.
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Old 01-22-2013, 09:39 PM   #40
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Oil takes 1 1/2 - 3 times longer than the coolant to warm up.

Cars with water based oil coolers actually have oil warmers during start up!

Be kind to your engine, drive it easy for at least 20 minutes until you think about getting to heavy with the right foot.
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Solve your misfires, lean codes, rough idle - http://forum.e46fanatics.com/showthread.php?t=897616

Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temps, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

Lower hose fan switch O-ring - BMW #13621743299
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