Question about 1996 Cadillac DeVille

1 Answer

My engine temperature is get up to 233 -240 degrees with out the AC being on, if i turn on the AC it gets up to 250-257degress. I have check my drive belts, fans, coolant levels and change my thermostat. What else should I check? How do I correct this overheating issue?

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    President:

    An expert whose answer got voted for 500 times.

  • Master
  • 3,113 Answers

The fans should come on at 225.and when the ac is on.

Posted on May 31, 2010

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that 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.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

When I jump in my car in the mornings (cold engine) and turn on the key (without starting the engine) the cooling fans come on (outside temp is only 60 degrees).


-No not to worry about it if your car never over head.
-No you can't get any reading if the temperature is at your thermostat's setting or below.
-It connect or (Works) ONLY when the temperature at that area reach above the thermostat setting or up to 200 degree or higher.

Good luck


Mai

Aug 10, 2015 | Cars & Trucks

Tip

Toyota Air Conditioners


This tip pertains to maximizing the cooling efficiency from your Toyota's Air Conditioning system.

(The info that follows is for vehicles that are not equipped with "Auto" AC.)

On really warm days, nothing is better than getting in a hot vehicle, and turning on the AC for a nice comfortable driving experience.

In our service facility, we continually see customers who are not totally satisfied with their AC output. Hopefully, this tip will address those issues, and just might be useful to you.

The number one reason for poor cooling with the AC on, is neglecting to select the "Recirculate" function on the heater/AC control panel.

What is Recirculate?
That mode is where the AC system 'recirculates' the air contained in the car, thru the AC box, over and over, until the desired temperature is reached. The Recirculate button, knob, lever or slide is easily identified by seeing a picture of a little car, with an arrow doing a 'U-Turn" inside the car. This is the opposite of the "Fresh" mode, which is an arrow going 'straight through' the little car icon.

If you are using the "Fresh" mode, you are actually admitting ambient air into the car. Ambient air is much warmer, and makes the AC work harder, and you will see a 10 degree rise in the air temperature from the dash vents. Also, some vehicles admit the 'Fresh' air from under the hood, so, leaving the 'Fresh' mode selected could actually draw in the much hotter underhood air into the AC system.

So, what to do? Anytime you use the AC, please verify that the Recirculate function has been selected. As stated above, this uses the air in the car over and over, and your cooling efficiency will be 10 degrees colder. You can easily check and verify this with an 'instant-read' thermometer. Put the thermometer in the center dash vent, start up the car, turn on the AC, select Recirculate, and watch the temperature drop. It should stop dropping around 34-36 degrees F (depending on humidity, sun load, and a few other things). Now, when the temperature is as low as it will reach, turn off the Recirculate device. You will see the temperature actually rise, maybe 10-12 degrees.

Some additional info: As long as the car is in Recirculate mode, the AC compressor will eventually turn off, when the interior makes the selected temperature. This saves you gas. If you run the AC with the fresh mode selected, the AC compressor runs all of the time. This wastes gas, and costs you more money.

The best way I can easily sum up Fresh versus Recirculate is this:

Running the car with 'Fresh' selected is like running your refrigerator with the door open. It works, but it does not work good. Choosing 'Recirculate' is like running the fridge with the door closed.
If this tip helps you, please leave a positive helpful rating. Thanks!

on Jul 17, 2010 | Toyota Corolla Cars & Trucks

2 Answers

Engine cooling fan only works when ac or defrost is on


if engine at long stand still,the engine temperature will rise about 190 degrees the cooling fan suppose to automaticaly turn on when coolant temperature sensor get hot it cause its resistance decrease causing pcm to send power to coolant fan relays and cooling fans, when you turn on AC the cooling fans suppose to turn on to cool down AC CONDENSOR, IF NOT AC WONT WORK COOLING FAN COOLS DOWN REFRIGERANT SO IT CAN RECYCLE THROUGH THE SYSTEM AGAIN.your cooling is suppose to turn on when engine at a sit still if vechicle not moving as coolant temperature rises at a set point the cooling fans will turn on cool down engine.cooling fans dont turn on when you first cold stsrt vechicle unless you have AC SWITCH ON.if cooling fans dont turn on when vechicle at a long stand still or moving along slow traffic.if coolant temperature sensor been replaced and fuses and relays okay have dealership check see if pcm driver circuit working faulty pcm will cause cooling fans not to turn on.

Sep 27, 2012 | 1996 Buick Century

1 Answer

Radiator fans not working on a 99 dodge Grand Caravan


Hi there:
The engine coolant temperature sensor is a variable resistor with a range of -40 degrees F-265 degrees F (-5 degrees C-129 degrees C).


The engine coolant temperature sensor provides an input voltage to the PCM. As the coolant temperature varies, the sensor resistance changes resulting in a different input voltage to the PCM.


When the engine is cold, the PCM will demand slightly richer air/fuel mixtures and higher idle speeds until normal operating temperatures are reached.


The engine coolant temperature sensor is also utilized for control of the cooling fan.


7_19_2012_5_08_13_pm.gif

Fig. 1: Engine coolant temperature sensor location - 3.3L and 3.8L engines



Check this test procedure:

  1. Turn the ignition switch to the OFF position.
  2. Detach the coolant temperature sensor electrical connector.
  3. Using a DVOM set to the ohms scale, connect one lead to terminal A and the other lead to terminal B of the coolant temperature sensor connector.
  1. With the engine at normal operating temperature, approximaterly 200 degrees F (93 degrees C), the ohmmeter should read approximately 700-1000 ohms.
  2. With the engine at room temperature, approximately 70 degrees F (21 degrees C), the ohmmeter should read approximately 7000-13,000 ohms.
  3. If not within specifications, replace the engine coolant temperature sensor.
  4. Test the resistance of the wiring harness between PCM terminal 26 and the sensor wiring harness connector. Also check for continuity between PCM connector terminal 43 and the sensor wiring harness connector. If the resistance measures greater than 1 ohm, repair the wiring harness as necessary.


Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.

Jul 18, 2012 | 1999 Dodge Grand Caravan

1 Answer

Is my car having overheating problems?


Most modern cooling systems are pressurized, the operating pressure is determined by the radiator cap. Check the pressure rating on your cap, and you can determine the boiling point of water. A 14 psi cap = 245 degrees F, at 16 psi = 250 degrees, etc. Coolant ("antifreeze") runs higher than that. Modern engines are more efficient at these higher temperatures, which is why they use a pressurized system. So if you're not getting any caution lights, and you cooling fan(s) are working, you're probably OK.

But this also explains why you NEVER remove the radiator cap while the engine is at operating temperature - the reduction in pressure in the entire system means ALL the coolant is above its boiling point, and it WILL all try to get out at once!

May 10, 2017 | 1998 Cadillac DeVille

2 Answers

2002 chevy malibu heats up when running at low speeds


CHECK THE THERMOSTAT. THERMOSTAT IS THE ONE THAT SENSE THE ENGINE TEMPERATURE AND TURNS ON COOLING FAN WHEN THE ENGINE IS HOT.

Jan 19, 2012 | 2002 Chevrolet Malibu

1 Answer

Getshotquickly,fansdontturnon,must turn on ac to.where is thermos


All engines are supposed to get up to 170 degree F very quickly.
Fans are not supposed to turn on until something like 190 degrees F.
The thermostat is under the water pump housing, and you have to take the AC, alternator, power steering, mounts, part of timing belt cover, etc., off to get at it. Takes many hours.
I suggest you first check actual temperatures with a thermometer.
It is unlikely you have both a bad thermostat and a bad fan control switch in the radiator.

Apr 20, 2010 | 1995 Audi Cabriolet

2 Answers

Engine temperature peugeot 307 sw hdi 90 rapier


hallo
behind front grill (near engine coolant blower motor) you have two relays for engine blower motor and resistor. Or one of this relay is foulty (or wires in conector) (oxidation becouse of the wather), or the resistor is broken. yours engine have two speed (stage) fan and probably first does not work. you can check when engaging AC first stage should work instantly. second start in about 100°C

Marko

Sep 24, 2009 | 2005 Peugeot 405

1 Answer

Coolant temp sensor located on a 2004 dodge ram 1500 4.7


YOUR ENGINE OPERATING RATING TEMPERATURE SUPPOSE TO BE 190 TO 200 DEGREES. IF COOLANT SENSOR DEGREES IS SHOWING 190 OR 200 DEGREES IT WORKING.THAT RIGHT.IF ITS SHOWING 60 OR 80 DEGREES IT FAULTY. AND ENGINE WILL RUN POORLY.

Jul 30, 2009 | 2004 Dodge Ram 1500

1 Answer

1998 Cadillac DeVille Overheats


The cooling fans will not come on until 225 degrees. Normal temp is around 199-215. Sitting still in traffic most will inch up around 220 or so. When you turn ac on it turns the fans on and may cool down engine, Check fan operation.

Jun 16, 2009 | 1998 Cadillac DeVille

Not finding what you are looking for?
1996 Cadillac DeVille Logo

198 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cadillac Experts

yadayada
yadayada

Level 3 Expert

76164 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8273 Answers

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

Answer questions

Manuals & User Guides

Loading...