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Lincoln LS Overheating Problems



  • Cool. Those fans are hydraulic. Maybe a bad connection was keeping the fan from working and signaling low hyradulic fluid, which in turn might tripping the oil light you're seeing??? I don't know, but if it ain't broke now, don't fix it. Good luck.
  • if i were you i would get another opinion, i had my car looked by 2 people who none of them told me anything related to my problem, if u kno someone who knows a mechanic who they can trust
  • It's possibly, but not likely. You'd need a narrow breach in the head gasket between a coolant journal and a cylinder, without it affecting nearby oil journals or anything else. A blown head gasket is rarely so particular or localized, meaning you'd find antifreeze in your oil too (it'd look milky/filmy) or antifreeze would leak from the head gasket onto the ground. Plus, if there was such a breach, you'd certainly be burning coolant (white smooke and/or a sweet smell/taste at the exhaust) in the cylinder. It's not a one way process-if there is a breach between an anti-freeze journal and a cylinder, not only would CO2 get into the antifreeze upon cylinder fire, but antifreeze would also be sucked into the cylinder on the compression stroke, and then burn upon ignition. You'd lose horsepower. You'd likely have a flashing p300 code (cylinder misfire) as the anti-freeze douses the igntiion process. Are you losing coolant?

    I'll tell you what I tell everyone-remove the inner (driver's) fenderwall and remove the degas bottle. Check the seams for signs of cracking. If it's cracked, replace it and that will likely solve all of your problems. When I say that air gets into the system when the degas bottle is cracked, its the air that's under your hood, which contains CO2.

    And it's also possible that Pep Boys is lying to you. Find a mechanic you know and trust. That's how I got my Lincoln-a friend owned it and brought it to a stranger's shop for an overheating issue. The mechanic said the the heads were blown and offered him $500 for the car, which was MINT otherwise and fully loaded. I had expressed interest in the car so he offered it to me for $500. Then I drained the oil (clean), read the blogs and found the degas bottle was cracked. I replaced it and its been running like a top for 20k now. The mechanic was trying to screw my buddy. And yes, I made it up to him...
  • akirbyakirby Posts: 7,666
    Pretty sure they changed to electric fans starting with the 03 models.
  • hi I am haveing the same problem could u tell me exactaly how you fixed this problem and what kind of jeep you got the fan off of to work with this vehicle.

    thank you, Rufus Henry
  • @Happster.

    You seem knowledgeable. I have an overheating problem maybe you can help with. It overheats suddenly when the car has been sitting and I turn it on. It goes to the top of the thermostat guage and the thermo light comes on. I then shut her down and she stays just at the halfway mark on the thermo guage.

    When I looked at the car it seems as if antifreeze dripped or exploded from the t-joint on the upper radiator hose assembly on to the heater valve. It is coming from the small hose at the bottom of the t-joint. I pulled all the hoses and they are fine with no cracks I also checked the t-joint on the upper radiator hoses to see if it was clogged or cracked and it is not. The antifreeze leak seems to be localized to that one hose. Something is cause the antifreeze to spew out of the hose and the car to over heat.

    Any help?
    Any advice.
  • Did anyone anywhere respond to your problem? We have a 2002 LS and are switching to the electric fan but we have a leak in the HFC pump so we cannot just loop the intake and out hoses. We want to bypass the pump also and need info on the belt routing. We were trying to replace the pump pulley with an idler or?????? Please let me know if you found help somewhere.
  • Could you please explain further on Problem #3? We have a 2002 LS V6 and are putting in the electric fan but the pump has a leak so we must remove it and need to run the belt in same general location. If you have pictures that would be great but any explanation on this side of the belt problem would be great.
  • Hows your problem doing now?
    Still gone?
    I am having the occasional overheating problem and trying to figure it out.
  • darl444darl444 Posts: 5
    Did you ever resolve the issue with the cooling fan. My 2000 Lincoln LS is doing the same. It cools fine for many miles, the sort of randomly decides to overheat. Pull the connector off the Cylinder Head Temp sensor, the fan will go to high and cool the engine. I changed the CHTS, but it still does the same thing. Do you know if ther there is a cooling fan control module separate from the fan?
  • darl444darl444 Posts: 5
    Hi Miamidave

    Doesn't look like jaime007 ever replied. Did you resolve the overheating on your Lincoln LS?
  • vinnygibsvinnygibs Posts: 2
    It had nothing to do with the fan at all. There is an engine fill port underneath the plastic ls cover. The gasket on that fill port went bad and was allowing air into the system drylocking it. The gasket was about 10 bucks you will also need an Alan key to remove the cap. good luck
  • HappsterHappster Posts: 30
    edited June 2011
    I've read posts from otherswith yourissue where they replace the hydraulic fan with an electric one with good results. My issue was with the famous cracked degas bottle letting coolant out and air in at high rpms, making it tough to find the leak. And its been great since.
  • lcostellolcostello Posts: 1
    I wanted to thank all of you for solving my overheating problem. I purchased a one owner 2000 Lincoln LS recently and the other day it overheated during initial start-up (with the air one). I changed the thermostat and all was better for the next 2 weeks then I noticed the temp slowly climbing again. I found this site a few days ago and checked my DEGAS bottle last night and after a few cycles found a small drip coming from the seam. I'm pretty sure this is where the cooling system is sucking air and caused the temp sensor to go up so quickly. I ordered a new Dorman Degas bottle last night for $62 which I plan to replace when it arrives.
    Thanks again for having this Forum. You saved me a pricy dealer visit and many headaches.
  • HappsterHappster Posts: 30
    That has to be your issue. Glad to help!
  • darl444darl444 Posts: 5
    Thanks for the info on the Degas bottle. I couldn't find any problems with it so have not replaced it. Do you know where the cooling fan controller is located? The fan is hydraulic, and rotates freely, at idle it operates at normal, or low speed, but does not go to a higher speed has the temperature starts to increase with increased engine RPM. But I can bring the operating temperature back to normal by just adjusting the cabin heater fan to high and desired temp to max with the engine at 2000 RPM (in park and A/C off).

    I'm also experiencing a problem now with the A/C compressor clutch. After about 10 minutes of normal operation, the clutch will cycle, but not fully engage, all the while making a squealing noise.

    Can the clutch be replaced without taking the compressor out?
  • HappsterHappster Posts: 30
    Sounds like an air pocket obstruction. Note that the crack in the degas bottle occurs on a seam and is tough to see. I'd try a pressure test by pinching or blocking the outlet and overflow lines. Not sure where the controller is. Never had that problem but many others have and wired in an electric fan with success. Also not sure about the clutch, but my guess would be that it is all external to the compressor and can be replaced without depressurizing the system or removing it. Good luck!
  • dezuzdezuz Posts: 1
    ok as everyone else i have an over heating issue with my LS..i've replaced the de-gass bottle, thermostat housing, and thermostat .. bled the air and see no leaks...yet once i get to operating temp it seems to over heat causing the hydralic fans to kick on which at low speeds is quiet but noticeable and at driving speeds it gets louder...any suggestions cause i am check engine light either btw ...
  • HappsterHappster Posts: 30
    I've heard of a lot of people having trouble with the hydraulic fans and many have resolved the issue by wiring in an electric one.
  • What kind of electric fan should I use in my 2000 ls V6??? and how many cfm is needed??? some one please help
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