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11-28-2010, 10:45 AM
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Learning to use the forums
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need advice with coolant system problem
I have a 1998 Ford Ranger with a 3.0 liter V6. The radiator developed a leak and the truck ran hot while I was making it home. I replaced the radiator, radiator cap, and top hose (the bottom hose was replaced about a year ago). I flushed the cooling system with Prestone flush and refilled it. When I refilled it I did my best to make sure I got all of the air out of the system.
Now; When I check it in the morning and the engine has cooled off from driving it the day before, the overflow reservoir is full to the top and the coolant level in the radiator is low. I can top off the radiator and drain down the overflow reservoir, but the next day I find that the reservoir has filled back up and the radiator is low.
Next, I replaced the thermostat and the radiator cap (again). This did not fix my problem. The reservoir still over flows and the coolant level in the radiator still drops low.
Any thoughts?
Last edited by kwai chang; 11-28-2010 at 04:39 PM.
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11-29-2010, 04:43 PM
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Liking the Ford Ranger Forum
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Join Date: Feb 2010
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Re: need advice with coolant system problem
You may need to replace the cap. If the seal leaks a bit the fluid can escape into the overflow tank.
R
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03-21-2013, 06:33 AM
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Learning to use the forums
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Re: need advice with coolant system problem
I have a 2000 Ranger with a 3.0 V6 and had the same problem. I found the waterpump was bad and all the impeller blade had deteriated with no blade left.
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03-29-2013, 07:50 AM
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Liking the Ford Ranger Forum
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Re: need advice with coolant system problem
You probably have air in your system forcing the coolant back into the overflow tank. The bigger question is: where is that air coming from? Warped heads & blown head gasket in my case.
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03-30-2013, 03:37 PM
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FRF <3
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Join Date: May 2011
Posts: 506
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I have a 99 with the 3.0 and I'm having a higher temp than usual. Usually my truck runs for
Hours and hours on the "c" on my temp gauge and now it's running up into the middle range of the gauge. Is my water pump going bad, or maybe a thermostat?
__________________
White '99 Ranger 4x4, 3.0, 5 spd. Torsion bar lift, 32x11.50 BFG All Terrains on Ion Alloy 15x8 rims, Custom Magnaflow turnout exhaust, K&N drop-in air filter, Cobra Super 19 mini CB, Sony Audio system and custom white dash trim, Air horns, throttle cable mod, airbox mod, manual hubs mod, 200k miles & PAID FOR
Rangers > Jeeps!
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03-30-2013, 11:47 PM
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Learning to use the forums
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Join Date: Mar 2013
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Re: need advice with coolant system problem
Quote:
Originally Posted by 4x4ranger99
I have a 99 with the 3.0 and I'm having a higher temp than usual. Usually my truck runs for
Hours and hours on the "c" on my temp gauge and now it's running up into the middle range of the gauge. Is my water pump going bad, or maybe a thermostat?
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same symptoms here.. I've heard the water pumps are notorious
Is there a way to check the pump without pulling the pump out?
__________________
1998 Ranger 4x4
3.slow (needs work)
Body Lift with some pseudo bead locked rims in 31's
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04-01-2013, 01:59 PM
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Learning to use the forums
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Join Date: Apr 2010
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Re: need advice with coolant system problem
Quote:
Originally Posted by pimart
same symptoms here.. I've heard the water pumps are notorious
Is there a way to check the pump without pulling the pump out?
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I haven't found any way to check other then removing it.
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04-01-2013, 02:20 PM
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dogrunner
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Join Date: Mar 2013
Posts: 1,271
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Re: need advice with coolant system problem
id bet money (if i had any) its your waterpump
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04-01-2013, 07:25 PM
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FRF <3
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Join Date: May 2011
Posts: 506
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Well I'm hoping to replace my thermostat this week, and we'll see if that helps. So does everyone else's 3.0 usually run on cold all the time? My temp gauge used to ride just above the C all the time for hours on the highway and all of a sudden it's running in the middle now on the highway and about 1/3 of the way up in the city. I'm getting ready for a meet and I want this back to normal lol
__________________
White '99 Ranger 4x4, 3.0, 5 spd. Torsion bar lift, 32x11.50 BFG All Terrains on Ion Alloy 15x8 rims, Custom Magnaflow turnout exhaust, K&N drop-in air filter, Cobra Super 19 mini CB, Sony Audio system and custom white dash trim, Air horns, throttle cable mod, airbox mod, manual hubs mod, 200k miles & PAID FOR
Rangers > Jeeps!
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04-01-2013, 08:09 PM
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Ford Ranger Driver
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Join Date: Mar 2010
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Re: need advice with coolant system problem
Quote:
Originally Posted by kwai chang
...........................Any thoughts?
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As a matter of fact, yes, I had this exact problem in the past. I'll answer this old post in hope that someone with the same problem sees this and benefits someday.
My old 94 4.0 that I bought brand new in 94 and sold in 05 did this after I replaced the radiator as a preventative measure. Of course, I didn't overheat it, replacement was just a maintenance measure in the name of reliability. After a couple of weeks of hell and confusion as to why it kept pumping coolant into the burp tank and not drawing it back into the radiator after it cooled down, I discovered that by installing a fiffy cent C clamp on the rubber line leading from the radiator to the burp tank, and installing it where this hose slipped onto the radiator, was the fix. I bought that 94 new, it was not molested or kiddie service center maintained, Ford simply never put a clamp on that connection, the hose aged and expanded, as the engine/radiator cooled, the soft rubber hose at this joint sucked air instead of coolant back into the radiator. Hose cooled, next duty cycle, coolant flowed from radiator to burp tank without spilling a single drop. Repeat, repeat, burp tank is filling.
Last edited by cowboybilly9mile; 04-01-2013 at 08:12 PM.
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04-02-2013, 09:06 AM
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Learning to use the forums
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Join Date: Mar 2013
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Re: need advice with coolant system problem
Here's an update on what i've looked over
there's a hole in the radiator but it doesn't leak...? (weird)
I flushed the system but did have trouble getting the air out of the top inlet hose where it makes that u curve over the intake..
Not sure how well it's cooling the thermo says it heats until middle of the range and stays there.. even on freeway
Will most likely be doing radiator and water pump soon just to be on the safe side AND putting on a clamp CYA policy
__________________
1998 Ranger 4x4
3.slow (needs work)
Body Lift with some pseudo bead locked rims in 31's
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