Member Since: 20 Nov 2019
Location: Styria
Posts: 9
Engine temp low
Hello guy’s,
I have a problem with my engine temp. My engine temp won’t come over 65-70 degrees at normal driving.
If I go downhill then the temp will fall immediately.
I have changed the cooler, thermostat, the oil temp sensor and the water temp sensor... the FBH is working...
The engine is chiped and the egr’s are blanked and deleted in the software. It’s a 2007 with the eu4 emission.
Does anyone know what the problem is or is it normal that the engine is running so cool?
Cheers and greetings from Austria!
13th Dec 2020 8:47 am
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72804
Doesn't the dropping going down hill suggest there is air in the system? If it were due to engine working less hard I wouldn't expect an instant drop..
Dean
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13th Dec 2020 9:13 am
DSL Keeper of the wheelie bin
Member Since: 11 May 2006
Location: Off again! :-)
Posts: 72804
Could be.
My techie superpowers are a bit dull this early in the day.
13th Dec 2020 9:22 am
discodomsn
Member Since: 20 Nov 2019
Location: Styria
Posts: 9
Could be that air pockets are in the system but I have done the bleeding twice... and at idle the engine won’t get temp that the thermostat opens like described in the workshop manual...
13th Dec 2020 9:30 am
lynalldiscovery
Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274
Hardware wrote:
Doesn't the dropping going down hill suggest there is air in the system? If it were due to engine working less hard I wouldn't expect an instant drop.
No what it means is as soon as engine off load the temp drops, and this is nearly always the stat.
13th Dec 2020 10:12 am
lynalldiscovery
Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274
Re: Engine temp low
discodomsn wrote:
Hello guy’s,
I have a problem with my engine temp. My engine temp won’t come over 65-70 degrees at normal driving.
If I go downhill then the temp will fall immediately.
I have changed the cooler, thermostat, the oil temp sensor and the water temp sensor... the FBH is working...
The engine is chiped and the egr’s are blanked and deleted in the software. It’s a 2007 with the eu4 emission.
Does anyone know what the problem is or is it normal that the engine is running so cool?
Cheers and greetings from Austria!
Try a search as I can recall the eu4 motors have stats in the egr coolers and their failure causes issues somehow, cannot remember what exactly!
13th Dec 2020 10:14 am
M3DPO
Member Since: 22 Sep 2010
Location: Notts.
Posts: 8121
If it is an airlock you would have the opposite effect and the heater would blow cold, it’s got to be the thermostat not closing, use a infra red thermometer( they are none contact, you just point them) and check the actual temperature of the system.
Try unplugging the fan and see if that makes any difference.
It can when others can't,
It will when others won't,
It goes where others don't.
13th Dec 2020 10:15 am
eightfoot
Member Since: 12 Apr 2015
Location: sunny essex
Posts: 768
is the coolant fan running ? have you got an iid to see what its doing in live values and have you actually taken a temp reading from a hose with a i/r thermometer to see how hot is really isplease excuse any grammer/punctuation mistakes,i'm thick,thankyou
current vehicles 2005 d3 2013 d4
13th Dec 2020 11:10 am
discodomsn
Member Since: 20 Nov 2019
Location: Styria
Posts: 9
Hi! Thx for the reply’s!
I have done everything you told me! With the fan on and off, have controlled the temp with a infrared thermometer... changed the sensors...
On the motorway the engine heats up to 80-82 and the oil to 100 but when it goes uphill or not on the motorway it cool down...
Think I’m gonna bleed it again...
13th Dec 2020 12:31 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10380
blanked EGR's keep the water cooler
13th Dec 2020 2:45 pm
M3DPO
Member Since: 22 Sep 2010
Location: Notts.
Posts: 8121
It could be worse, she could be overheating It can when others can't,
It will when others won't,
It goes where others don't.
13th Dec 2020 2:50 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10380
If the outside temperature is below 5°C, is the auxillary FBH heater working ?
Should be smoke coming out the front wheel arch when its running
13th Dec 2020 3:02 pm
discodomsn
Member Since: 20 Nov 2019
Location: Styria
Posts: 9
FBH is working
After a 3. bleeding it’s between 74-82... little better
13th Dec 2020 3:29 pm
lynalldiscovery
Member Since: 22 Dec 2009
Location: Maidstone
Posts: 7274
Re: Engine temp low
discodomsn wrote:
Hello guy’s,
I have a problem with my engine temp. My engine temp won’t come over 65-70 degrees at normal driving.
If I go downhill then the temp will fall immediately.
I have changed the cooler, thermostat, the oil temp sensor and the water temp sensor... the FBH is working...
The engine is chiped and the egr’s are blanked and deleted in the software. It’s a 2007 with the eu4 emission.
Does anyone know what the problem is or is it normal that the engine is running so cool?
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