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  #1  
Old 01-14-2010, 03:52 PM
midnightfireman midnightfireman is offline
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Default I'm Stumped and would appreciate some help

Hi All, I have a 2000 Ford Ranger 3.0 liter with 252k on the ole girl. She has been great up until now. I thought I may have a head gasket going, a buddy checked it with a guage and didn't show to be that, as guage held at 16 psi, just dropped ever so slightly in 15 minutes. I start it, temp needle hangs below cold, drive for 5-10 minutes and it pegs, then seems to equal itself out, while blowing the antifreeze into the overflow. Can drive all day and nothing else happens as long as it doesn't cool all the way down. I have flushed it, 4 thermostats and a new cap. Will not suck any of the antifreeze back in, as I have to drain the resy and add it back in to the radiator. I had tried blue devil prior ti him checking it with the guage and to no avail. There was a little bit of antifreeze drippin from the block on the passenger side front and seems to be wet in this area. Feb 09 water pump and Sept 09 new radiator due to the neck for the upper radiator hose breaking off. Any suggestions would be greatly appreciated.

Last edited by midnightfireman; 01-14-2010 at 04:49 PM.
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Old 01-14-2010, 11:49 PM
Bird76Mojo Bird76Mojo is offline
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Just a couple thoughts.

Get your radiator cap tested.

Does the overflow tank bubble and boil after shutting off?

Any leakage from a tester on your radiator shows a leak somewhere. Maybe a freeze plug.



GB
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Old 01-17-2010, 09:22 AM
midnightfireman midnightfireman is offline
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Got a new cap when the radiator was replaced, and yes it does bubble when I shut it off. There also seems to be alot of pressure built up...it was also suggested by a friend to go to a 6-8 pound cap, instead of the 16 the system calls for, any thoughts on this?
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Old 01-17-2010, 02:26 PM
Bird76Mojo Bird76Mojo is offline
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I'd still test the cap. I've bought brand new parts that were bad already..

Sounds like a head gasket to me.. Look for "snot" on the underside of your oil fill cap..


GB
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1989 Ranger Regular cab longbed, manual 2.9 4x4

Parts BroncoII's x 3
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Old 01-17-2010, 02:39 PM
TGDKY TGDKY is offline
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Honestly sounds like a head gasket to me too
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  #6  
Old 01-17-2010, 02:43 PM
Bird76Mojo Bird76Mojo is offline
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Headgasket or freeze plug. It's not sucking the coolant back into the system because the leak isn't letting a vacuum form in the system that would normally suck the coolant out of the overflow tank.

I've changed 5 heads on my old 2.9 and 3-4 caps. Funny thing is when the cap is bad it causes similar symptoms.


EDIT! I'm not that familiar with the 3.0 but I know the 2.9 inside and out. I thought you had mentioned the side of the block not the front. In that case it depends on where the block was wet. Water pump.. Lower intake gasket.... Head gasket... All are possibilities.

GB
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2001 Ranger Edge Regular cab, auto 4.0L 4x4 4.10LS

1989 Ranger Regular cab longbed, manual 2.9 4x4

Parts BroncoII's x 3

Last edited by Bird76Mojo; 01-17-2010 at 02:51 PM.
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Old 01-17-2010, 04:26 PM
midnightfireman midnightfireman is offline
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Thanks for the advice, no snot under the oil cap, will get a cap tomorrow and see what happens.
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Old 01-17-2010, 04:29 PM
Bird76Mojo Bird76Mojo is offline
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You can take your cap to an Autozone or Napa store, etc, and get it tested for free in a lot of locations..

Just having a coolant leak is a big problem in itself. You need to investigate that more.


GB
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2001 Ranger Edge Regular cab, auto 4.0L 4x4 4.10LS

1989 Ranger Regular cab longbed, manual 2.9 4x4

Parts BroncoII's x 3
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Old 01-20-2010, 05:43 PM
midnightfireman midnightfireman is offline
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No luck with the cap....anyway of telling if its a freeze plug versus a head gasket?
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Old 01-20-2010, 05:47 PM
Bird76Mojo Bird76Mojo is offline
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Either pump up the coolant system with a tester and inspect closely for leaks or warm it up and inspect the freezeplugs. An inspection mirror might help you get a better look in tight areas..

If it ever wants to miss on one cylinder then you can be pretty sure it's a head gasket.

You could always try adding the special dye to the coolant and using a blacklight while inspecting as well...


GB
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1989 Ranger Regular cab longbed, manual 2.9 4x4

Parts BroncoII's x 3
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Old 01-27-2010, 05:50 PM
midnightfireman midnightfireman is offline
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I have noticed something else....I took notice that prior to the system fully heating up, it is sucking the upper radiator hose shut. Also, when driving I will have heat, and can tell immeadiately when the temp guage is going to spike, as it begins to blow ice cold air.
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  #12  
Old 01-27-2010, 05:52 PM
Bird76Mojo Bird76Mojo is offline
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Thermostat, I'd say..

Your upper hose probably needs replaced as well..

http://www.ford-trucks.com/forums/21...cked-flat.html




GB
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2001 Ranger Edge Regular cab, auto 4.0L 4x4 4.10LS

1989 Ranger Regular cab longbed, manual 2.9 4x4

Parts BroncoII's x 3

Last edited by Bird76Mojo; 01-27-2010 at 05:56 PM.
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  #13  
Old 01-27-2010, 05:56 PM
midnightfireman midnightfireman is offline
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Put 4 of them in the last 2 months
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Old 01-27-2010, 05:58 PM
Bird76Mojo Bird76Mojo is offline
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There has to be a reason for that then. In my previous post I edited in a link talking about a water pump problem. Apparently Ford has two pumps available?? Different flow directions.. Who knew?? Although one guy mentions something about the thread for the fan clutch being reversed based on the correct pump being installed on the truck. Should be impossible to get it wrong?

Have you used any Stopleak on it? Could be a clog in the heater core creating vacuum in the system.. Also, start the truck with the radiator cap off, and let it run for a good while. There could be enough air in the system to create a problem.

GB
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2001 Ranger Edge Regular cab, auto 4.0L 4x4 4.10LS

1989 Ranger Regular cab longbed, manual 2.9 4x4

Parts BroncoII's x 3

Last edited by Bird76Mojo; 01-27-2010 at 06:03 PM.
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  #15  
Old 01-27-2010, 06:20 PM
midnightfireman midnightfireman is offline
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Thx for that possibility...I read that somewhere before also.....will give it a shot. And again thx for all the advice, will get to the bottom of this eventually
Also, if its a head gasket, will the spark plugs show any kind of signs?
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