Question about 1993 Lincoln Town Car

1 Answer

Ambient air temp sensors. there are 2 located in front of radiator. why two? my display reads all sorts of temps..starts at approx correct temp and then may go all the way to minus 40 degrees. are the two sensors the only part in the system that would control this or does the one in the air box affect.

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Lincoln Master
  • 15,575 Answers

The one in the air box has nothing to do with it ! There is only one Ambient air temp sensor Has gray with red trace wire & lite blue with orange trace wire . What color wire's to other sensor ?
Showing - 40 , sensor is bad or return signal wire is shorting .

Free wiring diagrams here http://www.bbbind.com/free-tsb Enter vehicle info. year , make , model an engine . Under system click on HVAC ,then HVAC controls will pop up. Click the search button then the blue link .

Posted on Jan 31, 2018

Ad

6 Suggested Answers

6ya6ya

6ya staff

  • 2 Answers

SOURCE:

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Ad

Anonymous

  • 33 Answers

SOURCE: where is the thermostat located

it should be at the end of your top rad hose

Posted on Dec 10, 2008

Anonymous

  • 6 Answers

SOURCE: no heat

No Blower in Floor Mode
A customer arrives with a 1983 to 1995 Full Size Ford, Lincoln, or Mercury
automobile with automatic temperature control. If the complaint is no blower operation when
the floor mode is selected, the vehicle may have a problem with the thermal blower lockout
switch also referred to as the CELO (cold engine lock out switch).
The thermal blower lock out switch is located in the heater core intake hose. The two
wire switch has a thermal element with a small set of contacts, the contacts are open when the
coolant is below 120°F and closed when the coolant is above 120°F. The thermal blower lock
out switch also contains a vacuum switch, which applies vacuum to the outside/recirculate
valve when the system is in the floor position. When the engine coolant is below 120 degrees
and the selector is set to floor position, the thermal blower lock out prevents blower from
turning on and closes off the outside air during engine warm-up. When the coolant
temperature is above 120 degrees, and the selector is set to the floor position, the thermal
blower lock out switch allows the blower to operate and opens the outside air door.
In order to diagnose this problem, test the thermal blower lockout switch with the
engine at normal operating temperature (above 120°F). Unplug the wire harness connector
from the thermal blower lockout switch. Using a 15-amp fused wire, jumper the harness
terminals to test the switch. If the blower comes on, the thermal blower lock out switch is
faulty. If the blower doesn’t come on, look for an open between the control head selector and
thermal blower lock out switch.
In some cases the blower may continually run even when the engine temperature is
below 120 degrees. Unplug the thermal blower lock out switch and if the blower motor turns
off, the thermal blower lock out switch is faulty. If the motor continues to run, look for a
short to power between the control head selector and thermal blower lock out switch

Posted on Feb 10, 2009

Anonymous

  • 41 Answers

SOURCE: cant get def. to blow warm air,floor air works good

well you are going in the right direction remove the four screws from the mode door actuator and move the door manually and see if it move freely if so move the selector switch on the dash and with the motor unbolted see if it moves properly don't forget you may need to apply a little resistance with your finger to find a problem with the actuator. good luck but both the mode door them selves and the mode door motors are vary common problem.good luck

Posted on Mar 23, 2009

fordexpert

  • 5692 Answers

SOURCE: 2007 mkz-cold weather whine that doesn't go away

You are still under warranty. Lincoln products have longer warranties. Make it the dealers problem. There may already be a fix in the system.

I would guess something like a speedo cable or clearance problem between moving plastic or rubber parts. If not, the fan clutch could be a possibility.

Posted on Jan 01, 2010

jamie

  • 1810 Answers

SOURCE: Where is the Cylinder Head Temp Sensor on the 2001

chilton make a great bible for your car that will help it's sold at chapters

Posted on Jan 06, 2010

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

06 rendezvous that the digital temp display for outside temp is wrong. The display reads 32 degree and it is actually 80 degrees so the A/C does not cool vehicle down. What is the problem?


Suspect a failure in the ambient air temp sensor. Has the vehicle ever been in a frontal collision? This sensor is normally located in front of the radiator assembly bolted to the rad support. If it is reading a cold temperature, it will not allow the AC to operate

Jul 18, 2015 | Cars & Trucks

1 Answer

Ambient temp sensor replacement


The ambient air temp sensor is located on the radiator support bracket at the top (see figure below, item 1)


7_14_2012_8_27_02_pm.gif

Jul 07, 2012 | 2004 GMC Envoy

1 Answer

On my 1998 Buick Riviera the outside temp display is not correct. How is this repaires


There is usually a Air Temperature Sensor Probe located in the front of your car, close to or under the Radiator that senses and reads the ambient air temperature. The probe could be dirty or bad, try cleaning it first with a mild cleaner, if it still is not working correctly, replace it.

Jul 17, 2010 | 1998 Buick Riviera

1 Answer

Air temp indicator only reads temps below 50 degrees


Ambient air temp sensor could be the cause. Normally located in front grille area.

Oct 06, 2017 | 2002 Chevrolet TrailBlazer

1 Answer

Ambient air temp is readying high on my 2007 Ford F150, possible causes?


Usually it is the temp probe on the radiator support behind the grille.
When you pop the hood there are 2 probes there, 1 in the ambient air temp probe, the other is the front impact severity sensor. temp probe has the little probe sticking out of it. I have seen mixed results on replacing this, some it corrects the issues, others are still not happy after the replacement. I make the assumption ( bad thing some times ) that the ones that are unhappy are using an incorrect comparison temp sensor ( bank sign, etc ).

Feb 25, 2010 | 2006 Ford F-150

1 Answer

Where is the digital thermometer located that is displayed on the rear view mirror in a 2000 gmc sierra?


The ambient air temp sensor is behind the front grill in front of the radiator. Remove the plastic shroud on top of the radiator to get to the sensor. It only took about 15 minutes. I believe there are 4 plastic pins/clips and 2 bolts holding the shroud on.

Nov 27, 2009 | 2000 GMC Sierra

1 Answer

Ambiant air temp reading on dash reads 110 to 122 even when it's cold! How to fix, where is the sensor located??2005 Subaru Forester.



Ambient Sensor (Auto A/C Model)

REMOVAL

  1. Open the front hood.
  2. Disconnect the ground cable from battery.
  3. Disconnect the ambient sensor connector
    1. Remove the ambient sensor from radiator lower panel.
    INSTALLATION

    Install in the reverse order of removal.

Sep 17, 2009 | 2005 Subaru Forester

2 Answers

Misreading outside temperature sensor on 2001 Audi A4


There are four sensors for ambient tempurature and they work in unison to provide information to the temp reading on the dash, the heater control head ( where to direct air, blending of warm/cold/outside/inside air flapper controls) depending on the ambient temp and the inside air temp sensor located just above the radio as well as the sun sensor on the top of the dash as well as the a/c compressor head.

When you start your car, the body control module takes the readings from all sensors, outside air temp located in front of the radiator, air temp sensor located in the airbox ( senses temp of air being drawn in from the outside into the air box), coolant temp, inside air temp sensor and the sun sensor on top of the dash (this is why it takes a few seconds for the climate control system to begine when you start the car). The intake air sensor is 1st priority, inside air second, coolant third, ambient 4th and sun 5th. For instance, if the sun sensor reads the sun is hot but the interior sensor reads cold, the inside akes priority. The goal is for the system to achieve a tempurature inside the car that matches the selected temp. It uses all of the sensors to set the system up to achieve that goal as quickly as possible.

Example; Its mid afternoon, sunny and 40 degrees outside adn your in stop and go traffic. The intake sensor reads 40 degrees, the outside sensor reads 60 degrees (heat from radiator...engine heat protrudes into cabin) and the sun sensor reads high (sun is strong). The system is set for 72. priority one sensor reads 40, inside sensor reads 65, ambient reads 60= system will blow hot air to the floor out put, dash outlets will lightly flow 65 degree air so the sun doesnt roast you yet your feet are cold(if it blew hot air from all outlets, your upper body would be hot but your legs/feet would be cold). as the interior sensor reaches desired temp, air will be distrubuted through thee dash, defrost and floor with the warmest air coming out the floor and defrost, coolest air out the dash vents. Its a complex system!

The two sensors that will screw the system up the most are the intake and interior sensors. the system will function reasonably well with just those two sensors though it wont blend air temps between outlets if the sun sensor isnt working. If the outside sensor fails, it simply uses the intake sensor, if the intake sensor fails it will rely on the front sensor. However, since the intake takes priority over the outside sensor, if the intake sensor sends incorrect resistance info rather than failing, it will take priority and cause the unit to malfunction such as in your case.

The intake air sensor can be changed from the outside with patience. If it where me, I would pay the two hrs labor and let the dealer do it right.

Kevin,
Kevins Small Engine service,
South Berwick ME. 03908

May 01, 2009 | 2001 Audi A4

2 Answers

Where is the ambient temp sensor located on a 2001 S40 Volvo?


Go to Matthew's Volvo Site and search under "ambient temp sensor" I posted detailed instructions and pictures of how to fix this. Enjoy

Apr 16, 2009 | 2001 Volvo S40

2 Answers

Ambient temp guage problems


The temperature sensor is located in front of the radiator on the passenger side. Replacements cost approx $25.00.

Jul 23, 2008 | 2000 Chevrolet Impala

Not finding what you are looking for?
1993 Lincoln Town Car Logo

Related Topics:

171 people viewed this question

Ask a Question

Usually answered in minutes!

Top Lincoln Experts

Marvin
Marvin

Level 3 Expert

85206 Answers

gerry bissi

Level 3 Expert

4388 Answers

fordexpert

Level 3 Expert

5692 Answers

Are you a Lincoln Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...