Question about 1996 Dodge Stratus

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Radiator fan operates only sometimes and the temperature is high why?

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  • Dodge Master
  • 2,359 Answers

The coolant temperature sensor,wiring and contacts are in question.

Clean the contacts and inspect the wire for damage.

Follow the wire all the way to the firewall.

===

The coolant temp sensor is cheap and if it's the stock sensor since 1996 then you should replace it.

===

Coolant flush should be perform every two years of 24,000 miles.

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Please rate my answer if it's useful to you.

Thanks

Mustgo


Posted on Dec 11, 2009

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Posted on Jan 02, 2017

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2002 mitsubishi galant are fans supposed to run when starting car?


The fans should run whenever the AC is on. But if it's off, the fan should only run when the computer thinks the temp is too high

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I have already replaced the radiator and thermostat but my 91 Honda Accord still overheats, why?


Run a cooling system pressure test. If you are losing pressure, then you will have to first locate the source of your leak.

With the engine started and the radiator topped off with coolant, does the radiator spout water out of the top? Does the spouting become more aggressive with engine revs? Yes? = Blown head gasket, or cracked cylinder.
No?- check operation of radiator cooling fan. With car stationary and hood up, run engine up to temperature and make sure radiator cooling fan kicks in before the engine temperature rises too high.

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AUDI TT 1.8T RADIATOR FANS NOT COMING ON


There is 30amp fues over the battery that needs to be checked and also, a good way to check the fan is to bridge the connectors from the radiator temperature sensor. Its attached to the bottom left of the radiator. Has 3 wires. bridge them in different configurations. one set is for high speed and the other is for low speed. Its quite common for the low speed resistor to blow.

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Will the bad waterpump on a 2003 pontiac aztek cause the temperature to overheat sometimes but run good others?


the water pump is working
the problem indicates blocked radiator cores preventing full flow at high rpm
have it flow tested by an accredited radiator shop or just fit a new radiator

Jul 13, 2017 | 2001 Pontiac Aztek

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2009 Jeep Wrangler Sahara Unlimited, overheats while driving in off-road conditions (Sand). Dealer has checked for any leaks but everythign seems fine. The 4WD Shifter liankage has been replaced twice....


Your cooling system works by getting air flow over the radiator and good circulation of coolant in the radiator as well as other areas of the motor.
The fan for your radiaror is electric, but it is designed to run at different speeds depending on conditions. First, I would verify that the fan DOES run. Sitting in the driveway with the engine at operating temperature, turn the A/C on and see if the fan speed increases right away or increases after running for 10 minutes. It should have a higher pitched sound. Look at the temperature gauge again and see if it is still at operating temperature. If the temperature continues to climb, turn the heater on full blast and watch the temperature gauge, it should drop.
No increase in fan speed means you could have a module problem or other problem related to the fan speed. In your relay box, relay "K11" is the fan relay. The relay box is in the engine compartment. The underside of the cover will identify what relays go for what. Some Jeeps used 2 relays, 1 for low speeds and the other for high fan speeds.The fan and module are replaced as a unit. The PCM (power control module is the brain for the engine management system including the controling of the fan relays. Sometimes the relays are the same and you can swap them with each other to see if there is a change. Note: If the temperature is normal when you are driving down the road, than the cooling system is normal and it is the fan.
Good luck.

Aug 09, 2011 | 2009 Jeep Wrangler

1 Answer

Engine light came on and car is over heating. Took it to auto zone and was told it's the fan relay. Its a 2003 PT Cruiser, Turbo. I opened the fuse box under hood. There are 3 spots for relays in there...


Turbo Radiator Fan

The radiator cooling fan is a variable speed electric motor driven fan. The radiator fan assembly includes an electric motor, fan blade, and a support shroud that is attached to the radiator. The radiator fan is serviced as an assembly (fan motor/fan/shroud).

The variable speed radiator fan is controlled by the Powertrain Control Module (PCM) by way of a Pulse Width Modulated (PWM) signal. The duty cycle ranges from 30% for low speed operation then ramps-up to 100% for high-speed operation. This fan control system provides infinitely variable fan speeds, allowing for improved fan noise, A/C performance, better engine cooling, and additional vehicle power.

To control radiator fan operation, the PCM looks at inputs from:

Engine coolant temperature
A/C pressure transducer
Ambient temperature
Vehicle speed
Transmission oil temperature (automatic transmission only

HENCE CHECK THE PCM

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2 Answers

2005 350z touring overheats while in stop and go . recently ran just to High range while idle on very cold day. Coolant change and power wash radiator did not cure problem


Hello,
Here's something that's a very common cause of overheating, and it's easy to check.

How to test the thermostat in most vehicles;
Make sure the heater is off, start the engine and let it run for 6 to 8 minutes, ( this will allow the
engine to reach, " normal operating temperature "), from the inside of the vehicle turn the heater
temperature on high and turn the fan speed on high.
1. Listen very closely for a click sound from the engine, ( most thermostats make a click when
they open )
2. Watch your temperature guage, it should begin to lower as the coolant starts to circulate.
3. Usually within a few minutes the radiator fan will kick.


What the thermostat does;
It seperates your coolant into two parts. The first part is in your engine, the second part is in your
radiator and the coolant reservior. When the coolant in the engine reaches the temperature rating
on the thermostat the thermostat opens to allow the two parts of coolant to change places. Now
the cooled coolant in the radiator and reservior flows into the engine while the heated coolant flows
from the engine into the radiator and reservior to be air cooled by the radiator fan.

I really hope this helps you.
Donnie

Feb 21, 2011 | 2005 Nissan 350Z

1 Answer

Engine runs hot


Hello,
Most often that is caused by a bad thermostat.

How to test the thermostat in most vehicles;

Make sure the heater is off, start the engine and let it run for 6 to 8 minutes, ( this will allow the
engine to reach, " normal operating temperature "), from the inside of the vehicle turn the heater
temperature on high and turn the fan speed on high.
1. Listen very closely for a click sound from the engine, ( most thermostats make a click when
they open )
2. Watch your temperature guage, it should begin to lower as the coolant starts to circulate.
3. Usually within a few minutes the radiator fan will kick.

What the thermostat does;

It seperates your coolant into two parts. The first part is in your engine, the second part is in your
radiator and the coolant reservior. When the coolant in the engine reaches the temperature rating
on the thermostat the thermostat opens to allow the two parts of coolant to change places. Now
the cooled coolant in the radiator and reservior flows into the engine while the heated coolant flows
from the engine into the radiator and reservior to be air cooled by the radiator fan.

I hope this helps you.

Feb 02, 2011 | 2001 Volkswagen Beetle

1 Answer

Temp gauge goes high. Radiator leak just the


It could well be a faulty thermostat- test or replace same.
Could also be a blocked radiator core, - check coolant or airflow is not restricted,
Ensure any radiator leaks are repaired,
Ensure coolant level is correct, without airlocks - bleed as necessary on re-fill,
Check operation of cooling fan - ensure fan runs at appropriate engine temperature - if not check sensor switch and associated relay operation.
Thermostat is located at the end of top radiator hose where it connects to engine housing.

Aug 10, 2009 | 1995 Jeep Grand Cherokee

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