Coolant bleeding problem!

[drag214]

So I've been at this for a few days now. I can't get a steady stream to come out of the bleeder hose. I've been following the instructions from the 2006 Lincoln LS Workshop Manual. Following the first few steps, I top off the Degas bottle and the engine fill point with the bleeder hose open. I start the car and wait for the steady stream but it's not happening. When the coolant temp gets to 220 degrees, I shut off the engine and take a break.
I was looking at the tread left by AnDrizzle, ( http://www.lincolnvscadillac.com/showthread.php?t=60322) so I checked the bleeder hose and it's not clogged. All I get from the hose are drips.

 

[gcwimmer]

Did you take a look at the TECH ARTICLE for Draining the Lincoln LS Cooling System.

 

[joegr]

The gen II procedure is close enough to the gen I procedure that I doubt that is the problem. Maybe you have a clog at the DCCV or somewhere near there?

 

[smdandb2]

So I've been at this for a few days now. I can't get a steady stream to come out of the bleeder hose. I've been following the instructions from the 2006 Lincoln LS Workshop Manual. Following the first few steps, I top off the Degas bottle and the engine fill point with the bleeder hose open. I start the car and wait for the steady stream but it's not happening. When the coolant temp gets to 220 degrees, I shut off the engine and take a break.
I was looking at the tread left by AnDrizzle, ( http://www.lincolnvscadillac.com/showthread.php?t=60322) so I checked the bleeder hose and it's not clogged. All I get from the hose are drips.

You have the EXACT same problem I have.

I bet you have a V8 too.

Since the bleed comes from the heater core (IIRC) I suspect that a less than steady stream of coolant indicates a failing auxilary coolant pump since it pumps coolant in to the heater core at idle.

I had someone sit in my car and hold the revs to about 2000rpm while I was bleeding it. That seemed to help the stream issue and for sure helped my heater to work better.

 

[drag214]

I bet you have a V8 too.

Yeah, I should have included that bit of information in the post.

indicates a failing auxilary coolant pump since it pumps coolant in to the heater core at idle.

I was woundering about that. Is the auxilary pump the aluminum cylinder near the radiator? It sounds like a air compresser. It only kicks on when I first turn off the car. I never worked on a cooling system like this.

I had someone sit in my car and hold the revs to about 2000rpm while I was bleeding it. That seemed to help the stream issue and for sure helped my heater to work better.

Where you able to bleed the system that way? Do you still have this problem?

 

[Andrizzle]

Like you noted, I had this problem, but due to a clogged bleeder hose.


Also I do not get a steady stream of coolant @ idle after my system is bled either (instead get dripping/leaking intervals of coolant coming out of the bleeder). I do however get a nice steady stream if I have the RPMs up. This is fine though because I have no problems and the new bottle works great. Like that one guy said, it may be that our pumps are failing or there is a clog deeper in the system, but until there is something wrong I do not see a problem arising.

But having zero coolant coming out may be a more immediate problem as that is pretty much indicating you have alot of air in the system or a major clog or pump fail.

 

[drag214]

The gen II procedure is close enough to the gen I procedure that I doubt that is the problem. Maybe you have a clog at the DCCV or somewhere near there?

Yeah, I went through the tech articles first. The procedures are identicle.

 

[drag214]

Also I do not get a steady stream of coolant @ idle after my system is bled either (instead get dripping/leaking intervals of coolant coming out of the bleeder). I do however get a nice steady stream if I have the RPMs up. This is fine though because I have no problems and the new bottle works great.
But having zero coolant coming out may be a more immediate problem as that is pretty much indicating you have alot of air in the system or a major clog or pump fail.

Ok that makes me feel better.
I get the same thing. I was expecting to get the full flow of coolant out of the bleeder at idle. I'm going to keep on bleeding and move on to the next step.

 

[joegr]

Ok that makes me feel better.
I get the same thing. I was expecting to get the full flow of coolant out of the bleeder at idle. I'm going to keep on bleeding and move on to the next step.

I only got a full/strong flow at raised RPM. It did get to where it was a steady trickle at idle.

 

[drag214]

I'm starting to get heat! Finally gettin progress! Thanx alot guys. I really appreciate all the input.

I shut off the engine and am going to let it cool down for a bit.

 

[drag214]

Ok so, the heat is going in and out. I'm also getting alot of presure in the coolant system. Is the presure normal during the bleeding process?

 

[Andrizzle]

sounds like the clog i had... are you sure the bleeder hose isnt clogged?


Pull the bleed hose off @ the steel pipe in the back by the firewall and see if it is flowing freely there.

 

[BatMobile]

sounds like the clog i had... are you sure the bleeder hose isnt clogged?


Pull the bleed hose off @ the steel pipe in the back by the firewall and see if it is flowing freely there.

I had the same problem for over a year and a few weeks ago I discovered that the bleeder hose was clogged. It's probably different on the V6 like mine but the bleeder stem into the hose (plastic of course) had completely deteriorated and was basically a bunch of plastic powdery gunk clogging the hose. I had a heck of a time getting it out of the hose.