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1989 Jeep Cherokee Water Pump

Tiny
RED_DOG
  • MEMBER
  • 1989 JEEP CHEROKEE
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 208,500 MILES
Replaced pump and now overheats. Cold air from heater. Removed t-stat and same thing. It's as if the pump is spinning backwards and not pumping
Sunday, June 22nd, 2008 AT 2:03 PM

6 Replies

Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Might have air in block try running with cap off till is operating temp see if coolant is flowing keep adding till full.
Hope this helps
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Sunday, June 22nd, 2008 AT 2:22 PM
Tiny
RED_DOG
  • MEMBER
  • 4 POSTS
No, water does not seem to be flowing. Level stays same in bottle, and not hot. Guage above 210
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Sunday, June 22nd, 2008 AT 3:34 PM
Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Did you run it with radiator cap off?
Check the routing of the belt maybe it is possible to get it on to turn the pump backwards does the fan go clockwise?
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Sunday, June 22nd, 2008 AT 3:45 PM
Tiny
RED_DOG
  • MEMBER
  • 4 POSTS
No cap on rad. Has a pressurized bottle. Closed? System. Yes, ran it on & off. The return fills it up, but does not flow back to system and spills.
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Sunday, June 22nd, 2008 AT 4:09 PM
Tiny
RED_DOG
  • MEMBER
  • 4 POSTS
Checked and re-checked the belt routing. The fan is on a seperate pulley and spins counter-clockwise
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Sunday, June 22nd, 2008 AT 4:14 PM
Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Is this an inline 6?
Does the fan pull hot air through the radiator ie. Can you feel warm air blowing into engine compartment?
Also see if there is a bleeder valve on the head near to thermostat if so crack this open let out traped air.
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Sunday, June 22nd, 2008 AT 4:19 PM

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