Did some logging yesterday - need input
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From: HTX-->ATL -->CHI
2015 E63S 4Matic
Did some logging yesterday - need input
Brought up my coolant / IAT temperatures in a separate thread but I figured for visibility sake I would create a new thread.
Essentially:
So my IAT temps are money, couldn't be happier with the temps as ambient was 78*F-81*F for the entirety of my drive.
However, regardless of whether I'm doing pulls, sitting in traffic, or cruising at 60mph, my coolant is almost always north of 190*F.
Is there a way to further diagnose what the culprit is?
Thanks for the read, and your time.
Essentially:
If there are pics to be taken, I'll take them.
Random question for any of you Houstonians: I did some pulls with my OBD2 reader and laptop today [obdscan apex], and had some questions about IAT's and Coolant Temps.
Ambient is 81*: Did 3 pulls from 40 to 100, IAT's maxed out around 140*F and within 10 seconds had dropped to around 105* each time, which is where they stayed cruising. The only thing that took them below 105* for the entirety of my drive was sitting idling at a stoplight.
My coolant on the other hand...didn't drop below 180* even after sustained highway driving, and jumped to just above 200*F during the pulls. Is this normal operating temperature for coolant?
Apologies in advance for no excel files/graphs...it was my intent to post a fancy set of graphs of my pulls but the software I'm running with my scanner screwed the pooch...it asks me what I want to save my data files as after I stop logging, and for some reason can't write to the default folder [without giving me the option to save elsewhere...I assume it's a permissions problem].
Only changes from stock are a Jerry box tune, S55 Driver's tube, and if it matters, I took out the grille over the H/E because another one of my tabs broke off [taking me down to 3].
Random question for any of you Houstonians: I did some pulls with my OBD2 reader and laptop today [obdscan apex], and had some questions about IAT's and Coolant Temps.
Ambient is 81*: Did 3 pulls from 40 to 100, IAT's maxed out around 140*F and within 10 seconds had dropped to around 105* each time, which is where they stayed cruising. The only thing that took them below 105* for the entirety of my drive was sitting idling at a stoplight.
My coolant on the other hand...didn't drop below 180* even after sustained highway driving, and jumped to just above 200*F during the pulls. Is this normal operating temperature for coolant?
Apologies in advance for no excel files/graphs...it was my intent to post a fancy set of graphs of my pulls but the software I'm running with my scanner screwed the pooch...it asks me what I want to save my data files as after I stop logging, and for some reason can't write to the default folder [without giving me the option to save elsewhere...I assume it's a permissions problem].
Only changes from stock are a Jerry box tune, S55 Driver's tube, and if it matters, I took out the grille over the H/E because another one of my tabs broke off [taking me down to 3].
monitor coolant again just to make sure it goes up to 200F.
Could be the following a stuck thermostat, failing cooling fan and lastly a blown head gasket through which exhaust gases are leaking and heating the coolant up on runs (but i highly doubt it is the head gasket)
Could be the following a stuck thermostat, failing cooling fan and lastly a blown head gasket through which exhaust gases are leaking and heating the coolant up on runs (but i highly doubt it is the head gasket)
So my IAT temps are money, couldn't be happier with the temps as ambient was 78*F-81*F for the entirety of my drive.
However, regardless of whether I'm doing pulls, sitting in traffic, or cruising at 60mph, my coolant is almost always north of 190*F.
Is there a way to further diagnose what the culprit is?
Thanks for the read, and your time.
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Joined: Nov 2004
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2005 E55
Our cars are supposed to sit at 190-200 for coolant
I had a 180d thermostat and the car threw codes for engine coolant to cold in the winter months.
your coolant never dropped below 180 because it has a 190d thermostat on her
I had a 180d thermostat and the car threw codes for engine coolant to cold in the winter months.
your coolant never dropped below 180 because it has a 190d thermostat on her
Last edited by skratch77; Mar 9, 2011 at 03:12 PM.
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From: HTX-->ATL -->CHI
2015 E63S 4Matic
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Thread Starter
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Joined: Sep 2010
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From: HTX-->ATL -->CHI
2015 E63S 4Matic
Stock setup. Stock IC Pump. Not split. I believe that Jerry did the -10*C mod when he tuned me.
I'll let Shardul take a look when I see him later today. AFAIK the first owner didn't split the cooling [he is an anesthesiologist in New Hampshire, where I bought the car last October]
I'll let Shardul take a look when I see him later today. AFAIK the first owner didn't split the cooling [he is an anesthesiologist in New Hampshire, where I bought the car last October]
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From: HTX-->ATL -->CHI
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Any other values you want me to graph alongside IAT/Coolant? I'm running to see my grandma at the hospital right now and can pull timing/EGT/air flow/RPM/Speed along with what I already graphed.
For some reason this scanner won't pull AFR for me like it did on my previous car.
For some reason this scanner won't pull AFR for me like it did on my previous car.
