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Has anyone had problems with fan not starting and causing over heating....



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Old 06-06-2018, 08:37 AM
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Fan

Has anyone had problems with fan not starting and causing over heating.

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Old 06-06-2018, 08:43 AM
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Call Scott-----Venomous1 at (254-722-5697)----power steering problem most likely.
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Old 06-06-2018, 03:19 PM
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Quote:
Originally Posted by Bobby S View Post
Has anyone had problems with fan not starting and causing over heating.
I'd check the power steering reservoir to make sure you have fluid in there as well, you might have a leak if it is low or worse bone dry.
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Old 06-06-2018, 11:09 PM
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Your fan does not come on at all?
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Old 06-07-2018, 03:53 AM
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Quote:
Originally Posted by Bobby S View Post
Has anyone had problems with fan not starting and causing over heating.
Don't call Scott and stay away from that.

Have you diagnosed the problem at all?
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Old 06-07-2018, 08:23 AM
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Fan is now running. Temp runs very hot though. Sometimes up around 220-240. Does anyone know of any srt10 specialists near Old Bridge NJ. Dodge dealerships are useless. Had new Thermostat put in last year 180.
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Old 06-07-2018, 10:14 AM
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Hello: We have the same hydraulic-fan system that is used on the 2006 5.7L Hemis so there are a ton of them out there.
These are a balanced assembly that have to be replaced as an entire unit although they can (sort of) come apart.

Pick and choose from the information below.

Be Careful as THOSE FAN BLADES ARE SHARP!!!



http://driveviper.com/forums/threads...ing-in-traffic


HYDRAULIC FAN MOTOR DIAGNOSTIC PROCEDURES


DIAGNOSIS: This diagnostic procedure should be used if the engine overheats or the A/C compressor cycles rapidly. 1. Non-hydraulic system - Check for low coolant, faulty thermostat, faulty temperature sensor, etc. - Is there a Non-hydraulic system problem? a. Yes >> Repair as necessary. b. No >> Go to Step #2.
2. Power steering fluid - Check the power steering fluid level in the reservoir - Is the fluid in the power steering pump reservoir below the dipstick “Add” mark? a. Yes >> Check for leaks and repair as required. Fill the reservoir to the proper level and proceed to Step #3. b. No >> Go to Step #3. CAUTION: Fan blade and/or shroud may have sharp edges! 
3. Radiator cooling fan - Disconnect and isolate the negative battery cable from the battery. Rotate the fan counterclockwise (as viewed by the driver) using fingertips on the outer fan blade. Move the fan through 7 full rotations and notice the drag torque. - Does the fan spin freely through all 7 rotations with minimal finger exertion? a. Yes >> Go to Step #6. b. No >> Go to Step #4.
4. Does the torque needed to spin the fan significantly change as the fan is rotated? a. Yes >> Go to Step #18. b. No >> Go to Step #5
5. Is it difficult to turn the fan or does it require the effort of more than one finger? a. Yes >> Go to Step #18 b. No >> Go to Step #6
6. Testing the system - Connect the negative battery cable to the battery. Using the StarSCAN® perform the following tests with the engine running at idle speed. - Does the fan accelerate when given a 100% duty cycle command? a. Yes >> Go to Step #7. b. No >> Go to Step #12.
7. Does the fan decelerate when the duty cycle is changed from 100% to 0%? a. Yes >> Go to Step #8. b. No >> Go to Step #18.
8. At 0% duty cycle, turn the steering wheel to full left or right stop for up to 5 seconds (to stop fan rotation). - Does the fan rotate when the steering wheel is returned to center at 0% duty cycle? a. Yes >> Go to Step #9. b. No >> Go to Step #10.
9. Repeat Step #8, ten times. - Does the fan always resume rotation after the wheel is returned to center? a. Yes >> The hydraulic fan motor is OK. b. No >> Go to Step #10.
10. Turn the A/C system on. The ambient temperature or sun load must be high enough to cause the A/C compressor to cycle, this will normally be above 15.6° C / 60° F. With the A/C system operational, the fan speed should increase as the refrigerant pressure rises. If the A/C system does not operate because of low temperature (below 15.6° C / 60° F) or sun load, use the StarSCAN® to step the fan control motor solenoid duty cycle to 100%. - Does the fan always start soon after the A/C is turned “On” (or the duty cycle is set to 100%)? a. Yes >> Go to Step #11. b. No >> Go to Step #18.
11. Repeat Step #10, ten times stopping the fan between tests by turning the steering wheel. Does the fan speed always increase when A/C is turned “On” (100% duty cycle)? a. Yes >> The hydraulic motor is OK. b. No >> Go to Step #18.
12. Does pump noise increase indicating that the system pressure is increasing? a. Yes >> Go to Step #18. b. No >> Go to Step #13.
13. ELECTRICAL TESTING - Disconnect the 3 pin connector of the fan motor assembly jumper harness from the vehicle engine compartment wiring harness. Using the connector of the jumper harness for electrical measurements will normally allow easier access than if the connector at the hydraulic motor pressure control valve is used. Measure the resistance between terminal 1 and terminal 2 of the fan motor assembly jumper harness to determine fan motor solenoid resistance. (Fig. 3) - Is the resistance between 7 and 13 ohms? a. Yes >> Go to Step #14. b. No >> Go to Step #17.
14. Fabricate a 3 wire jumper harness between the vehicle engine compartment wiring harness and the fan motor assembly jumper harness connector. Insert an ammeter in the K173 BR/VT circuit (Fig. 3). Start the engine and set the duty cycle to 100%. - Is the current draw on circuit K173, BR/VT, between 0.5 and 1.5 amps? a. Yes >> Go to Step #17. b. No >> Go to Step #15.
15. Inspect for shorted or broken wires. - Were any wires shorted or broken? a. Yes >> Repair as necessary. b. No >> Go to Step #16.
16. Replace the Front Control Module (FCM).
17. Replace the fan control motor solenoid and retest the hydraulic fan motor.
18. Replace the hydraulic fan/motor/shroud assembly.

DIAGNOSTIC PROCEDURES:
Try the Fan-Spinning Test Above: Numbers 3, 4 & 5. This test seems conclusive and if mine passes, the most expensive replacement item is still functioning and an electronic control has malfunctioned.
If that isn’t the case, then the power steering pump may be weak. I don’t think that is true as it isn’t noisy and the steering is fine.
If the spin test fails, that leaves the purchase of a new Fan Module Assembly.
If the spin-test passes, make sure the electrical connector for the fan is hooked up and is in good (clean) condition. Then check the resistance of Pin 1 and Pin 2 of the connector as in Number 13 above. It may need to be replaced.
If the systems checked have passed thus far….
Disconnect the water temperature sensor during warm-up. At this time I can listen to the power steering pump as in #12 above.

This is what I did: (A Big Thanks to Dan Lesser)

Once the engine warmed up to about ¼ up on the gauge, I disconnected the coolant temperature sensor (which instantly pins the temperature gauge); and in about 2 seconds, the fan started roaring away at full-speed which meant much of the electrical and hydraulic fan systems were just fine.


More...http://www.wkjeeps.com/TSB/tsb_wk_0700205.pdf


Good Luck!

Ronnie
THEWELSHM, rbabody and TXThumper like this.
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Last edited by rottenronnie; 06-07-2018 at 10:31 AM.
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Old 06-07-2018, 10:38 AM
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Have you tried to pull the high temp sensor wire off while its running to see if the fan kicks on high speed
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Old 06-07-2018, 04:01 PM
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Off to the stealership to see if any problem with power steering reservoir, Thermostat, Water pump.
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Old 06-13-2018, 09:52 AM
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The fan is after market Electric fan, not hydraulic original.
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