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  #1  
Old 10-30-2010, 07:06 PM
jasonrobby jasonrobby is offline
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Default overheat

I have a 99 ranger, 3.0, 5 speed that has started over heating a few weeks back. I have had it for 6 months and it has 220,000 miles so I don't no much about the history of the truck. I have put new radiator cap, Three thermostats, and flushed system. It will Idle just fine Drive it and it wants to overheat. I have found no signs of head problems. Once the lower hose sucked closed (collapsed) over night. After a short drive it seems to get warm. One side of the radiator is a lot cooler than other and lower hose is a lot cooler than upper. Could this be a worn water pump or Radiator problem? Is this a common issue?
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Old 10-30-2010, 08:00 PM
FireRanger FireRanger is offline
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Default Re: overheat

Quote:
Originally Posted by jasonrobby View Post
Could this be a worn water pump or Radiator problem? Is this a common issue?
Yes water pump and yes common at that age. If you pull the pump, I guarantee you will see the impeller blades are worn down to flat pieces of metal. So at low RPM, what little water it can move is fine. At speed, forget it. It's just spinning metal in water.

The hose collapsing is a sign that the system is not properly venting. Radiator cap is, the hose leading to tank is clogged, or the tank itself is clogged.
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Old 10-30-2010, 08:01 PM
FireRanger FireRanger is offline
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Default Re: overheat

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How to: Aux light wiring, relays, & fuses
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Old 10-31-2010, 03:15 PM
jasonrobby jasonrobby is offline
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Default Re: overheat

Thank you , I replaced cap hope that will fix hose problem. Water pump is next.
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Old 11-04-2010, 08:04 AM
jasonrobby jasonrobby is offline
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Default Re: overheat

Changed water pump no luck ,any suggestions.
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Old 11-10-2010, 06:20 AM
caub22 caub22 is offline
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Default Re: overheat

Check your head gaskets..

If you have white smoke coming from the tailpipe, and/or your heat isn't working at all then it's a gasket. My 1993 ranger's gaskets went out at 169k on my 3.0 vulcan
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Old 11-10-2010, 05:41 PM
FireRanger FireRanger is offline
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Default Re: overheat

Ok lets take a different approach here.

When you say it starts to overheat, are you saying that because the temp gauge climbs up to the red or because the pressure relief is opening up and blowing coolant and steam out?

If the pressure relief is opening and blowing out coolant and steam without the temperature gauge climbing to the red, then you have a head gasket leak. Pressure from the cylinders is leaking into the cooling system and over pressurizing it. It isn't overheating at all, the temperature would be normal.
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How to: Aux light wiring, relays, & fuses
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Info: HID Projectors
How To: NO HEAT Troubleshooting Guide
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