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BMW 3-Series (E90 E92) Forum
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Low coolant temperature
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12-07-2016, 08:52 AM | #67 |
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12-07-2016, 10:10 AM | #68 |
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OEM t-stat from ECS. Was about $60 shipped also ordered the 4 bolts, but to my surprise the old ones looked just fine. I replaced them anyway for piece of mind.
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12-07-2016, 10:17 AM | #69 |
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12-07-2016, 12:01 PM | #70 |
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My first online delivered thermostat had a hairline crack in the housing that extended under the gasket. I sent it back...
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12-08-2016, 01:54 AM | #71 |
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12-08-2016, 08:22 AM | #72 |
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12-08-2016, 10:21 AM | #73 |
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01-20-2017, 09:51 AM | #75 |
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Hi guys,On M57 325d I changed both thermostats Egr and main after car was warming up very fast ( in 5 km water was up to 80, after 9 km up to 90 and stable)
Now last days I was checking again and surprise after 15 km water rose from 11 to 60C , after 35 km water was at 82-84. This is not normal to warm up that slow. I changed the egr stat but no change. I will replace main stat again( note the old one is also original bmw), doubt it will fail after 3 months. Besides that is there something else that will create a slow warmup? |
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01-20-2017, 09:56 AM | #76 | |
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Out North American 335d don't have EGR thermostats by the way. Another consideration is your local weather temp but 35 km=21 miles sounds like a long way to warm up, I agree. My warm up is more like 4 miles=6.4 km but Houston much more warm than Denmark right now. Last edited by BB_cuda; 01-20-2017 at 03:01 PM.. |
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01-20-2017, 11:56 AM | #77 | ||
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If i dont replace what could happen? Should i, as i dont have a dpf? |
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01-20-2017, 03:02 PM | #78 | |
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what is not normal is after temp reaches 88, if I slow down or drive moderately the temp strarts decreasing close to 82, before once it was up to 90 it will not move from there |
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01-22-2017, 09:56 AM | #79 |
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UPDATE; After main stat change, the coolant temp goes up to 96 and around 93-94 degrees C on highway. I have seen also 97 C at idle after a highway run.
Do you think 97 is too much? I had the impression it should stay at 90-91, now I am concerned that new thermostat might be bad as well aghhhhhw |
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01-22-2017, 04:51 PM | #81 |
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Is your radiator fan cycling off and on? I was told fan should come on at 92C from trust worthy source. Once again, let the system self bleed by idling with reservoir cap off and heater running. This is about only time I recall getting fan to run. My system rarely breaks above 90C.
Please let us know if that 97 continues. |
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01-23-2017, 02:26 AM | #82 |
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You can use the aux. pump to bleed the system - then you do not have to have the engine running
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01-23-2017, 04:02 AM | #83 | |
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01-23-2017, 10:39 AM | #84 | |
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Hey look at it this way, you may get a longer T/S use interval than the rest of us as they all seem to slip down the slope of slowly but surely decreasing control point. |
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01-24-2017, 07:29 AM | #85 | |
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If you think the temperatures of 82-86 degrees C is normal, this is bulshit. It should stay with original thermostats at 89-92 , in any case it should be over 89. And in max 10 km it should warm up to 80-85 no matter of the outside temperature. |
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01-24-2017, 09:10 AM | #86 |
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These temps are possible on a 'stock' car. Deleted vehicles report lower temperatures due to the obvious reasons.
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01-24-2017, 11:22 AM | #87 |
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Sorry, I quoted my own experience. I don't have an EGR cooler so no heat from it comes into coolant system. From several conversations with stock guys, there is about a 3C difference when running down freeway at steady cruise.
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01-26-2017, 12:58 AM | #88 |
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There may be different thermostats. My OEM one that failed was stamped with 88C. And that seems to be the correct temperature most of our 335d run at. 325d may have a 89C or 92C thermostat, it may be a bit different.
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