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Latest Jeep Wrangler Repair and Fan Clutch Installation Advice

CarJunky AutoAdvice

4.0L jeep overheating

Showing 8 out of 8 Posts
Question From swhitney on 4.0L jeep overheating

1999 Jeep Wrangler 4.0L I6. Engine overheats under heavy load or over 45 MPH. Radiator replaced due to leak / Cooling system had excessive rust, so much so that the fins on the waterpump were gone when pump was removed / Replaced waterpump with reverse rotation pump (serpentine belt) and replaced thermostat with 160 deg / Thoroughly flushed system with non-acidic flush and removed waterpump to verify block looks like new inside / All coolant hoses changed because they felt brittle / Attempted reverse compression test by applying air to each cylinder on top dead center and found no bubbles in radiator cap or air leaks from throttle body or exhaust / Air conditioning condenser free of debris and nothing between the condenser and radiator to block air flow / Fan clutch replaced just for good measure.

Did I miss anything?

Thanks,

Response From Hammer Time

Although pumping air into the cylinder sounds foolproof, it really isn't. The best way to test for that is with an emissions analyzer over the radiator.

I'd also remove the upper radiator hose and run the engine just to make sure the pump is working properly and your getting good flow.

Response From swhitney

What's the best way to increase flow?

Response From Hammer Time

You can't increase flow. You just verifying that you have the right pump rotation.

Response From swhitney

I have verified that the coolant is flowing and in the correct direction.

Response From Tom Greenleaf

?? What's this with the reverse water pump?? If fins aren't right flow would be too low if directional,

T

Response From Hammer Time

Jeeps use 2 different water pumps depending on what kind of belt they use because the pump that is driven by the backside of a serp belt turns the opposite direction and they make them both ways.

Response From Tom Greenleaf Top Rated Answer

Learn something new every day! I didn't know how they did what with an age old engine TMK?? Unfortunately forget two or more of something every day too - just laugh. The alternative is too sad,

T

Shop for Top Selling Genuine Jeep Wrangler Fan Clutches

  • We Stock the following top leading brands, including Four Seasons, GMB, Global Parts, Hayden
  • Constantly Updated Inventory of Jeep Wrangler Replacement Fan Clutch Parts
Four Seasons
2007 Jeep Wrangler Engine Cooling Fan Clutch Four Seasons

P311-389A6D5    New

Qty:
$ 60.64
Four Seasons Engine Cooling Fan Clutch
  • Reverse Rotation Thermal Heavy Duty Fan Clutch
  • Reverse Rotation Heavy Duty Thermal Fan Clutch
  • Fan Clutch
  • Product Attributes:
    • :
      • 0.703125
      • 1.44 [36mm] Hex
      • 1.500
      • 17.780
      • 182.880
      • 2.62
      • 3.203125
      • 3.250
      • 38.100
      • 4
      • 66.573
      • 7.200
      • 81.534
      • 82.550
      • Aluminum
      • C
      • C - Heavy Duty
      • Fan Clutches
      • Heavy
      • Heavy Duty
      • Hex
      • M30x1.500
      • M8 X 1.25 Hole
      • New
      • Non Electronic
      • Not Included
      • Raw Aluminum In Color
      • Rev
      • Thermal
      • Uses Original Equipment Connector
      • Yes
  • Out of box installation
Brand: Four Seasons
Additional Fitment Information:
Vehicle
2007 - Jeep Wrangler
Four Seasons
2011 Jeep Wrangler Engine Cooling Fan Clutch Four Seasons

P311-125D223    New

Qty:
$ 85.62
Four Seasons Engine Cooling Fan Clutch
  • Reverse Rotation Thermal Heavy Duty Fan Clutch
  • Reverse Rotation Heavy Duty Thermal Fan Clutch
  • Fan Clutch
  • Product Attributes:
    • :
      • 0.703125
      • 1.440
      • 1.750
      • 152.146
      • 17.780
      • 2.621
      • 3.250
      • 3.46875
      • 4
      • 44.450
      • 5.990
      • 5/16" - 18
      • 66.573
      • 82.550
      • 88.011
      • Aluminum
      • C - Heavy Duty
      • Drawing C
      • Fan Clutches
      • Heavy Duty
      • Hex
      • M30x1.500
      • New
      • Non Electronic
      • Not Included
      • Raw Aluminum In Color
      • Rev
      • Thermal
      • Uses Original Equipment Connector
      • Yes
  • Designed, tested, and built by application
Brand: Four Seasons
Additional Fitment Information:
Vehicle
2011 - Jeep Wrangler
GMB
Qty:
$ 29.45
  • Counter Clockwise (Reverse) Rotation Thermal Fan Clutch Standard Duty
Brand: GMB
Additional Fitment Information:
Vehicle Block CC CID
1991 - Jeep Wrangler L - 150
GMB
Qty:
$ 30.81
  • Counter Clockwise (Reverse) Rotation Thermal Fan Clutch Heavy Duty
Brand: GMB
Additional Fitment Information:
Vehicle Block CC CID
2006 - Jeep Wrangler L - 242
GMB
Qty:
$ 31.54
  • Counter Clockwise (Reverse) Rotation Thermal Fan Clutch Heavy Duty
Brand: GMB
Additional Fitment Information:
Vehicle Block CC CID
1998 - Jeep Wrangler L - 242
Global Parts
Qty:
$ 29.79
Global Parts Engine Cooling Fan Clutch
  • Thermal
Brand: Global Parts
Additional Fitment Information:
Vehicle Block CC CID
1993 - Jeep Wrangler L - 150
Global Parts
Qty:
$ 29.79
Global Parts Engine Cooling Fan Clutch
  • Thermal; Reverse Rotation
Brand: Global Parts
Additional Fitment Information:
Vehicle Block CC CID
1989 - Jeep Wrangler L - 258
Hayden
Qty:
$ 39.56
Hayden Engine Cooling Fan Clutch
  • Standard Rotation Thermal Standard Duty Fan Clutch
  • Standard Rotation Standard Duty Thermal Fan Clutch
  • Fan Clutch
  • Product Attributes:
    • :
      • 0.63
      • 1.03125
      • 1.53
      • 152.146
      • 2.6
      • 2.62
      • 26.162
      • 3.109375
      • 3.250
      • 38.811
      • 4
      • 5.990
      • 5/16-18 Hole
      • 66.573
      • 78.994
      • 82.550
      • Aluminum
      • B
      • B - Non-thermal And Std Thermal
      • Fan Clutches
      • Flange
      • New
      • Non Electronic
      • Not Included
      • Raw Aluminum In Color
      • Standard
      • Standard Duty
      • Std
      • Thermal
      • Uses Original Equipment Connector
      • Yes
  • Out of box installation
Brand: Hayden
Additional Fitment Information:
Vehicle Block CC CID
1987 - Jeep Wrangler L - 150
Hayden
Qty:
$ 41.10
Hayden Engine Cooling Fan Clutch
  • Reverse Rotation Thermal Standard Duty Fan Clutch
  • Reverse Rotation Standard Duty Thermal Fan Clutch
  • Fan Clutch
  • Product Attributes:
    • :
      • 0.63
      • 1.03125
      • 1.530
      • 152.146
      • 2.6
      • 2.62
      • 26.162
      • 3.09375
      • 3.250
      • 38.862
      • 4
      • 5.990
      • 5/16-18 Hole
      • 66.573
      • 78.486
      • 82.550
      • Aluminum
      • B
      • B - Non-thermal And Std Thermal
      • Fan Clutches
      • Flange
      • New
      • Non Electronic
      • Not Included
      • Raw Aluminum In Color
      • Rev
      • Standard
      • Standard Duty
      • Thermal
      • Uses Original Equipment Connector
      • Yes
  • Out of box installation
Brand: Hayden
Additional Fitment Information:
Vehicle Block CC CID
1989 - Jeep Wrangler L - 258
Hayden
Qty:
$ 38.12
Hayden Engine Cooling Fan Clutch
  • Reverse Rotation Thermal Standard Duty Fan Clutch
  • Reverse Rotation Standard Duty Thermal Fan Clutch
  • Fan Clutch
  • Product Attributes:
    • :
      • 0.63
      • 1.03125
      • 1.53
      • 152.146
      • 2.6
      • 2.62
      • 26.162
      • 3.109375
      • 3.250
      • 38.811
      • 4
      • 5.990
      • 5/16-18 Hole
      • 66.573
      • 82.550
      • Aluminum
      • B
      • B - Non-thermal And Std Thermal
      • Fan Clutches
      • Flange
      • New
      • Non Electronic
      • Not Included
      • Raw Aluminum In Color
      • Rev
      • Standard
      • Standard Duty
      • Thermal
      • Uses Original Equipment Connector
      • Yes
  • Out of box installation
Brand: Hayden
Additional Fitment Information:
Vehicle Block CC CID
1998 - Jeep Wrangler L - 150
Hayden
Qty:
$ 40.11
Hayden Engine Cooling Fan Clutch
  • Reverse Rotation Thermal Heavy Duty Fan Clutch
  • Reverse Rotation Heavy Duty Thermal Fan Clutch
  • Fan Clutch
  • Product Attributes:
    • :
      • 0.63
      • 1.03125
      • 1.53
      • 182.880
      • 2.6
      • 2.62
      • 26.162
      • 3.234375
      • 3.250
      • 38.811
      • 4
      • 5/16-18 Hole
      • 66.573
      • 7.200
      • 82.550
      • Aluminum
      • C
      • C - Heavy Duty
      • Fan Clutches
      • Flange
      • Heavy
      • Heavy Duty
      • New
      • Non Electronic
      • Not Included
      • Raw Aluminum In Color
      • Rev
      • Thermal
      • Uses Original Equipment Connector
      • Yes
  • Out of box installation
Brand: Hayden
Additional Fitment Information:
Vehicle Block CC CID
1992 - Jeep Wrangler L - 242
Hayden
Qty:
$ 49.56
Hayden Engine Cooling Fan Clutch
  • Reverse Rotation Thermal Heavy Duty Fan Clutch
  • Reverse Rotation Heavy Duty Thermal Fan Clutch
  • Fan Clutch
  • Product Attributes:
    • :
      • 0.703125
      • 1.44 [36mm] Hex
      • 1.750
      • 17.780
      • 182.880
      • 2.62
      • 3.250
      • 3.46875
      • 4
      • 44.450
      • 5/16-18 Hole
      • 66.573
      • 7.200
      • 82.550
      • Aluminum
      • C
      • C - Heavy Duty
      • Fan Clutches
      • Heavy
      • Heavy Duty
      • Hex
      • M30x1.500
      • New
      • Non Electronic
      • Not Included
      • Raw Aluminum In Color
      • Rev
      • Thermal
      • Uses Original Equipment Connector
      • Yes
  • Out of box installation
Brand: Hayden
Additional Fitment Information:
Vehicle Block CC CID
2001 - Jeep Wrangler L 3958 242
Hayden
Qty:
$ 49.56
Hayden Engine Cooling Fan Clutch
  • Reverse Rotation Thermal Heavy Duty Fan Clutch
  • Standard Rotation Heavy Duty Thermal Fan Clutch
  • Fan Clutch
  • Product Attributes:
    • :
      • 0.703125
      • 1.44 [36mm] Hex
      • 1.750
      • 17.780
      • 182.880
      • 2.62
      • 3.250
      • 3.46875
      • 4
      • 44.450
      • 5/16-18 Hole
      • 66.573
      • 7.200
      • 82.550
      • Aluminum
      • C
      • C - Heavy Duty
      • Fan Clutches
      • Heavy
      • Heavy Duty
      • Hex
      • M30x1.500
      • New
      • Non Electronic
      • Not Included
      • Raw Aluminum In Color
      • Rev
      • Thermal
      • Uses Original Equipment Connector
      • Yes
  • Out of box installation
Brand: Hayden
Additional Fitment Information:
Vehicle Block CC CID
2005 - Jeep Wrangler L - 242
Hayden
2008 Jeep Wrangler Engine Cooling Fan Clutch Hayden

P311-04DD857    New

Qty:
$ 55.13
Hayden Engine Cooling Fan Clutch
  • Reverse Rotation Thermal Heavy Duty Fan Clutch
  • Reverse Rotation Heavy Duty Thermal Fan Clutch
  • Fan Clutch
  • Product Attributes:
    • :
      • 0.703125
      • 1.44 [36mm] Hex
      • 1.500
      • 17.780
      • 182.880
      • 2.62
      • 3.203125
      • 3.250
      • 38.100
      • 4
      • 66.573
      • 7.200
      • 81.534
      • 82.550
      • Aluminum
      • C
      • C - Heavy Duty
      • Fan Clutches
      • Heavy
      • Heavy Duty
      • Hex
      • M30x1.500
      • M8 X 1.25 Hole
      • New
      • Non Electronic
      • Not Included
      • Raw Aluminum In Color
      • Rev
      • Thermal
      • Uses Original Equipment Connector
      • Yes
  • Out of box installation
Brand: Hayden
Additional Fitment Information:
Vehicle
2008 - Jeep Wrangler
Hayden
2011 Jeep Wrangler Engine Cooling Fan Clutch Hayden

P311-3687802    New

Qty:
$ 77.83
Hayden Engine Cooling Fan Clutch
  • Reverse Rotation Thermal Heavy Duty Fan Clutch
  • Reverse Rotation Heavy Duty Thermal Fan Clutch
  • Fan Clutch
  • Product Attributes:
    • :
      • 0.703125
      • 1.440
      • 1.750
      • 152.146
      • 17.780
      • 2.621
      • 3.250
      • 3.46875
      • 4
      • 44.450
      • 5.990
      • 5/16" - 18
      • 66.573
      • 82.550
      • 88.011
      • Aluminum
      • C - Heavy Duty
      • Drawing C
      • Fan Clutches
      • Heavy Duty
      • Hex
      • M30x1.500
      • New
      • Non Electronic
      • Not Included
      • Raw Aluminum In Color
      • Rev
      • Thermal
      • Uses Original Equipment Connector
      • Yes
  • Designed, tested, and built by application
Brand: Hayden
Additional Fitment Information:
Vehicle
2011 - Jeep Wrangler