how good is your heat?

Finally, a home for all you 524td oil burners out there.
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gadget73
Posts: 601
Joined: Nov 22, 2017 11:30 PM
Location: New Jersey

how good is your heat?

Post by gadget73 »

Just wondering if the BMW diesel heat is a bit lacking. I've never had wonderful heat out of the Conti, especially since I replaced the old radiator. The heater core flows clean and I've flushed it several times. I added a restriction on the high idle kicker and that seems to have helped a bit. Idea is that its forcing some extra coolant out of the back of the head to the core vs having most of it flow out of the front of the head through the high idle. It has a stock 80C / 176F thermostat. I've had poor heat out of other cars that ran 180 t-stats so just wondering if this is as good as it gets.
kingoftarmace2004
Posts: 128
Joined: Mar 15, 2018 3:34 PM
Location: Fall River Mills

Re: how good is your heat?

Post by kingoftarmace2004 »

i did have problems with my a/c flapper down not closing all the way causing cold outside air to come in. verified when I did the a/c delete. I would hit a bump and I think it would jar close. after that the heat was nice and toasty. I would inspect your vent system for vents that aren't closing all the way. especially the outside air vent. Oh by the way since you are a engineer. what kinda EGT temps are exceptable on our aluminum head engines? thanks! -Paul
mike_e30
Posts: 22
Joined: Mar 02, 2019 12:23 PM
Location: New Jersey

Re: how good is your heat?

Post by mike_e30 »

No heat issues with stock 80 C thermostat, it can blow very hot air, but I have a E30, Im sure the heater core is far smaller. My coolant temp though is always on the notch below middle, it only creeps to the midpoint or slightly above in very hot weather esp when running the AC
gadget73
Posts: 601
Joined: Nov 22, 2017 11:30 PM
Location: New Jersey

Re: how good is your heat?

Post by gadget73 »

Not an engineer, I don't even have model trains. I just work around radioactive stuff for a living. This Lincoln is my first diesel thing, frankly I really don't know enough about them to have any guess on what the right EGT number is.

Pretty sure all the HVAC doors are working as they ought to be. The climate control is all electronic with servos and feedback sensors/switches. I don't get any faults for door position and I can verify they move like they should. If I set it to 90 it forces the blend door to full hot and opens the recirc door. The air is reasonably warm but I'm more used to the convection slow roast that I get from my other two Lincolns or my pickup truck. All of those have 195 T-stats. I used to have a 180 in the Towncar and the heat was OK, with a 195 it will run you right out of the car. Ford put pretty big heater cores in these things.

Possible related issue though, my fan clutch doesn't seem to de-clutch, or at least I've never noticed it slowing down when cold like I have on my truck. Might be its just over-cooling. Unfortunately Lincoln didn't see fit to install any instruments besides a speedometer and a fuel gauge. Unless the engine gets so hot that its about ready to melt I get no indication of anything.
kingoftarmace2004
Posts: 128
Joined: Mar 15, 2018 3:34 PM
Location: Fall River Mills

Re: how good is your heat?

Post by kingoftarmace2004 »

ahhhh. you might be running at 110 and not even know it. -Paul
gadget73
Posts: 601
Joined: Nov 22, 2017 11:30 PM
Location: New Jersey

Re: how good is your heat?

Post by gadget73 »

entirely possible. I need some handy way of working out temperature without a permanant gauge. Wonder if I can tie a meter into the temp sender for the glow plug control and just translate ohms to degrees. That would at least give me a clue as to what its doing. Have to see if there is a chart in one of the manuals for testing that thing.
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