96 LX Wagon cooling fan issue


badpoor
11-27-2010, 08:14 AM
My fan will not come on during normal and or high temperature. It does work when I either turn the A/C or heater on though. I replaced the coolant temperature sensor and that did not resolve the issue. ( sensor replaced was the right one,if your looking at engine from drivers side of the car) does the other sensor, next to this one, operate the fan when the coolant gets hot?

AzTumbleweed
11-27-2010, 09:26 AM
The sensor you replaced operates your temp gage. The one on the left turns the fan on. :2cents:

badpoor
11-27-2010, 02:21 PM
Thank You!

badpoor
11-28-2010, 08:09 PM
Replaced the other sensor and the fan does not come on and temperature gauge still reads HOT! all help would be greatly appriciated considering I drive this car daily and brake to a stop over 200 times ( news paper rural route) in a three hour period.:runaround:

AzTumbleweed
11-29-2010, 08:47 AM
As a temporary measure I would run the A/C but I would disconnect the wires to the A/C compressor. This should make the fan run all the time. You'd still be able to use the heater as normal.

badpoor
11-29-2010, 04:30 PM
That is next to the oil pan correct? also would the engine running hot like that cause me to use alot more gas? twice as much

AzTumbleweed
11-30-2010, 08:54 AM
Follow your serpentine belt down and the A/C compresor is at the very bottom. You will see two wire going in to it. I say unhook it because you will get a little better fuel mileage with it not running. The hot engine shouldn't affect your mileage. Have you been running the A/C? That will cut your mileage by 3-4 MPG.

badpoor
11-30-2010, 02:55 PM
I actually had my heat on all the time,thinking that would cut some of the engine heat out. I noticed that turning my defrost on does the same thing as turning on the A/C. I just have to remember to shut it down before I shift into reverse or drive because my tach goes up to 2K with A/C on when i'm in neutral....not a good way to shift into drive or reverse:eek7:

AzTumbleweed
12-01-2010, 08:22 AM
Running the heat is a good way to cool the engine. It's cold enough now that your engine should stay cool with just the heater doing the cooling. If your engine overheats with the heater on (this time of year) I'd say something is wrong. Like cracked head gasket, stuck thermostat or clogged radiator.

badpoor
12-02-2010, 11:06 AM
My thermostat checked out OK. I noticed also that it's not as hot as it used to be when I ran the heat last year......could that be the head gasket?

AzTumbleweed
12-03-2010, 06:33 AM
My thermostat checked out OK. I noticed also that it's not as hot as it used to be when I ran the heat last year......could that be the head gasket?

The engine will usually get very hot when you have a bad head gasket. The heater sometimes works poorly or not at all with a bad head gasket. If running the heater is keeping the engine temp in operating range then I'd would just run it like that for now. Have you been losing coolant? Often when you have a bad head gasket you will have to add coolant from time to time.

AzTumbleweed
12-03-2010, 04:51 PM
Here's something for you to try for the heck of it. With the engine running disconnect the wires going to the engine temperature sensor (one on the left). On my car that makes the cooling fan come on. Try that and see what happens. :confused:

badpoor
12-04-2010, 07:44 PM
Could it be a relay and are those located behind the top of the strut mount on the firewall? i'm thinking it would be the one on the right. I got to get this takin care of,i'm losing 100 miles to my full tank and thats not any good lol.
I will go out right now and try to disconnect that like you said.

AzTumbleweed
12-04-2010, 07:54 PM
I think those relays are for the A/C. They should click when the A/C cycles on and off. I'm thinking the cooling fan relays are working because the fan is able to come with the A/C. This fan problem has nothing to do with your bad fuel mileage. Is your 'check engine' light on. If the car seems to run OK then I'd be thinking the Oxygen sensor needs replaced. That can hurt your mileage. :2cents:

badpoor
12-04-2010, 07:55 PM
I did what you suggested and it came on after about five seconds and ran at full power lol..any reason you wanted me to do that?( besides just for the heck of it)

badpoor
12-04-2010, 07:58 PM
check engine light was on for awhile and it indicated the catylist is malfuntioning and/or it could be a bad sensor AGAIN! I should have never gutted it thinking it was clogged when all it was was the bad spark plug wires. the check engine light is no longer on and hasn't been for about 3 months.

AzTumbleweed
12-04-2010, 08:07 PM
:2cents:That means your sending unit must be bad. Did you replace it with a new one? That's sure what it sounds like any way. The relays are definately working for this to happen.

AzTumbleweed
12-04-2010, 08:09 PM
check engine light was on for awhile and it indicated the catylist is malfuntioning and/or it could be a bad sensor AGAIN! I should have never gutted it thinking it was clogged when all it was was the bad spark plug wires. the check engine light is no longer on and hasn't been for about 3 months.

Don't feel bad, I gutted one too for no reason. Have you replaced the oxygen sensor?

badpoor
12-04-2010, 08:24 PM
I did not replace the sensor and sice the check engine light does not come on anymore I forget which one it was.
where would the sending unit be located?

badpoor
12-04-2010, 08:26 PM
If that the thing I replaced on the left,after replacing the one on the right then yes it was brand new.

AzTumbleweed
12-04-2010, 08:49 PM
If that the thing I replaced on the left,after replacing the one on the right then yes it was brand new.

That's the one I was referring to. Sure sounds like it should work. I think if you search this forum you will find posts about a defective thermostat housing. I don't know anything about this problem but it could relate to you.
(I'm shutting down here for the night)

badpoor
12-05-2010, 01:57 PM
That's the one I was referring to. Sure sounds like it should work. I think if you search this forum you will find posts about a defective thermostat housing. I don't know anything about this problem but it could relate to you.
(I'm shutting down here for the night)
Thermostat Housing- FordMan59 wrote:You can remove the thermostat housing and if the pellet is OK you will be able to hear it rattling insde the housing http://www.automotiveforums.com/vbulletin/t970635.html
It rattled for me when I shook it.
I replaced the sending unit with a new one(again) and it's not operating the fan still. I'm at a loss here. I took the thermostat out and checked it and it opens at 192 (opens@192). I will flush the system and make sure I have no air in it. Wish me luck.

badpoor
12-05-2010, 04:50 PM
Thermostat Housing- FordMan59 wrote:You can remove the thermostat housing and if the pellet is OK you will be able to hear it rattling insde the housing http://www.automotiveforums.com/vbulletin/t970635.html
It rattled for me when I shook it.
I replaced the sending unit with a new one(again) and it's not operating the fan still. I'm at a loss here. I took the thermostat out and checked it and it opens at 192 (opens@192). I will flush the system and make sure I have no air in it. Wish me luck.
No go with the fan still. Should the bottom hose move when I squeeze the top hose? I doesn't seem very hot to the touch and I can squeeze it with two fingers. I ws noticing and I forgot to mention that before this all happened I was hearing what sounded like boiling water comming from under the hood when I would shut the car off. Wen I would pop the hood and look the noise only lasted about 10 seconds. I do have better heat now that I flushed the system.

AzTumbleweed
12-06-2010, 07:18 AM
You did say the car is overheating? I mean, does the gage go into the red? The gurggling sound makes me think bad head gasket.

The oxygen sensor is mounted on the exhaust manifold. It has two or three wires going to it. It's easy to spot.

dwbailey
12-06-2010, 12:38 PM
I have a similar problem on my 95 Escort LX but the fan doesn't come on even when the A/C is turned on. :confused:

badpoor
12-06-2010, 03:08 PM
[quote=dwbailey;6843149]I have a similar problem on my 95 Escort LX but the fan doesn't come on even when the A/C is turned on. :confused:[/quote
Could be a fuse, if you still have the owners manual it will tell you where they are located.

badpoor
12-06-2010, 03:09 PM
You did say the car is overheating? I mean, does the gage go into the red? The gurggling sound makes me think bad head gasket.

The oxygen sensor is mounted on the exhaust manifold. It has two or three wires going to it. It's easy to spot.
Unless I turn either the A/C or the Defrost on the gauge will go into the red.

dwbailey
12-06-2010, 03:23 PM
I actually took a shot in the dark not long ago and replaced that big honker of a fuse under the hood and the fans still don't come on when I turn on the a/c. When I do turn the a/c on, the idle surges slightly but I'm not even sure the a/c is coming on. :confused:

badpoor
12-07-2010, 09:50 AM
I actually took a shot in the dark not long ago and replaced that big honker of a fuse under the hood and the fans still don't come on when I turn on the a/c. When I do turn the a/c on, the idle surges slightly but I'm not even sure the a/c is coming on. :confused:
Try running power directly to the fan and see what happens.

badpoor
12-07-2010, 09:55 AM
You did say the car is overheating? I mean, does the gage go into the red? The gurggling sound makes me think bad head gasket.

The oxygen sensor is mounted on the exhaust manifold. It has two or three wires going to it. It's easy to spot. the last one I replaced was a scrap yard sensor. Thats prolly no good anymore. Easy fix considering its the one after the manifold...No laying on the cold concrete garage floor WOOOOHOOOO!

dwbailey
12-07-2010, 10:12 AM
Try running power directly to the fan and see what happens.

When I bought the car the previous owner had actually done that and I disconnected it. Not sure if I tested it to make sure that fans came on or not after that. If the fans run when they are bypassed what do you suppose that would mean? I was thinking that big fuse but apparently not.

AzTumbleweed
12-07-2010, 03:12 PM
Could be fuse, relay or computer (EEC).

dwbailey
12-07-2010, 03:26 PM
Could be fuse, relay or computer (EEC).

Wow! Hate to start throwing money at the problem until I stumble upon it and my troubleshooting skills are limited. :crying: I did replace the big 'ole honker of a fuse under the hood and don't think that fixed it. Maybe get a used computer off of eBay and try that? Where is the relay located? Easy to replace? Thanks for suggestions.

AzTumbleweed
12-08-2010, 07:43 AM
Wow! Hate to start throwing money at the problem until I stumble upon it and my troubleshooting skills are limited. :crying: I did replace the big 'ole honker of a fuse under the hood and don't think that fixed it. Maybe get a used computer off of eBay and try that? Where is the relay located? Easy to replace? Thanks for suggestions.

I think ther relays are under the air cleaner box.

dieselscout80
12-08-2010, 11:07 AM
I think ther relays are under the air cleaner box.

Yes and those are hard to find at parts store and are $$. My relays were burnt I replaced them with two hella relay.

A stuck thermostat is another possiblity for not getting warm enough.

badpoor
12-15-2010, 09:05 PM
Never Figured out why my 96 wagon would overheat.
That car is now going to the scrap yard due to more serious issues including the subframe being rotted out with rust.
This seems to be a common problem in the north or northeast.
Right where my trailing arm bolts into the subframe is almost completely rotted away from the frame itself.....ALSO...lol the tranny solenoids went on it three days ago. I can't keep trying to fix everything when something else always comes up. This is a great car,don't get me wrong,I just think it was badly mantained from the start.
I WANT ANOTHER ONE!!! lol

AzTumbleweed
12-16-2010, 09:23 AM
Probably a good idea to let her go. In Southern Nevada we don't have rust. I guess that's one god thing :p

mightymoose_22
12-20-2010, 08:58 PM
I suspect your radiator is plugged. The coolant is not circulating properly so that the sensor knows to turn on the fan.

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