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  #16  
Old 01-27-2010, 06:32 PM
Bird76Mojo Bird76Mojo is offline
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If it's a headgasket, then you should get an occasional misfire on that cylinder. Usually after it's warmed up. Once the cooling system has built up pressure, forcing the coolant through the leaking area..

After some time has went by while having a bad head gasket, you'll usually see some snot on the underside of the oil fill cap though.. I kept cracking radiators when my headgasket was bad. I figured it was excess pressure in the cooling system from compression??

GB
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  #17  
Old 01-27-2010, 06:52 PM
BossRanger92 BossRanger92 is offline
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I agree check the radiator cap, I have seen this problem many times before. Don't go cheap on the radiator cap, if that does not take care of it I would pull the plugs one cylinder at a time and look for white residue on the electrode indicating a potential coolant leak. The number one cause for bad head gaskets is lack of maintenance, flush your coolant system every two years and you will save yourself head gasket issues.

Good luck with your repairs
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  #18  
Old 01-28-2010, 05:08 PM
midnightfireman midnightfireman is offline
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I did try a stop leak, called Blue Devil, which was intended to 'fix' the head gasket. It didn't work. This whole thing just mistifys me....it has gotten better, and I have a whole lot more heat, and the guage does not act up like it once did. Also, I noticed that the fuel mileage went down, but now seems to be picking back up. I just don't understand. I had parked it for a while but have been driving it back and forth to work, which is a minimum of 50 miles a day, Mon-Fri. Every now and then the guage will move on me after it has heated up, but again will begin to blow cold, giving me the warning, and it stabilizes itself right away. Hasn't been blowing back in the reservoir/overflow either. Guess I'll run her til she stops, but will check the plugs over the weekend. Am also going to get a new MOTORCRAFT radiator cap and thermostat
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  #19  
Old 01-28-2010, 05:30 PM
Bird76Mojo Bird76Mojo is offline
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If you can afford it I'd try to give the entire cooling system a good flushing. That stop leak likes to clog heater cores sometimes. Which causes a vaccum build-up on one side of the clog, collapsing hoses, etc.. The boiling into the overflow I'd almost guarantee was a faulty cap. I've had that same problem numerous times myself..

If it were me I'd do the following. In this order.

Flush entire system after removing thermostat.
Install new thermostat, and have radiator cap checked/replaced.
Refill with NEW antifreeze, then run the engine with the radiator cap off until it burps all of the air out.


GB
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1989 Ranger Regular cab longbed, manual 2.9 4x4

Parts BroncoII's x 3
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  #20  
Old 02-09-2010, 05:42 PM
brtlgdy brtlgdy is offline
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have you corrected this problem ,because i have a problem with my 2000 3.0 ranger with 116,000 miles . when i shut it off after a 30 minute trip or so the coolant boils , i have flushed the system , changed all hoses , changed thermostats , coolant , and checked everything twice. no antifreeze in oil or vice-versa. it does not overheat but takes a while to warm up (the temp. gauge goes to normal then goes back down before it hits normal temp. again and i have heat) no leaks any where either. runs fine though. any help?
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  #21  
Old 02-09-2010, 05:49 PM
Bird76Mojo Bird76Mojo is offline
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Radiator cap. Have it tested or replaced. You could also do a leakdown test on the cooling system..

That's exactly what my truck was doing due to the bad cap though..


GB
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1989 Ranger Regular cab longbed, manual 2.9 4x4

Parts BroncoII's x 3
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  #22  
Old 02-10-2010, 09:26 AM
shirm shirm is offline
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i have an issue w/ 2001, 4L v6.
random missing feeling during normal travel. this has been going on for the past three winters. this happens only in cold weather. i thought bad gas!, don't know. it hits pretty hard, like a misfire but hits w/ a slug feeling. never in warm weather. this eng. has tuned port inj. correct? so if a slug of water from the tank went through to one cylinder would i feel that hit. doesn't idle funny or appear to be missing at idle. only random slugs at normal operating temps and speeds. in four wheel or only in two.
drew
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  #23  
Old 02-10-2010, 10:55 AM
Bird76Mojo Bird76Mojo is offline
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That's not related to the guys problem in this thread. I suggest you start your own thread for that specific question as it doesn't seem to be coolant system related AFAICT.

No offense..


GB
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1989 Ranger Regular cab longbed, manual 2.9 4x4

Parts BroncoII's x 3
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  #24  
Old 04-02-2010, 05:22 PM
brh80146 brh80146 is offline
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Default Re: I'm Stumped and would appreciate some help

Where can I drain the radiator fluid? Is there a bolt or should I pull a hose?
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  #25  
Old 04-02-2010, 05:26 PM
Bird76Mojo Bird76Mojo is offline
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Default Re: I'm Stumped and would appreciate some help

They'll be a pet**** type thing on the bottom of the radiator. Put a bucket under there and turn it until it flows the most it can. If you've ever used Stop-Leak in your truck then it may be plugged and you'll have to try poking a piece of wire around in the outlet..


GB
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1989 Ranger Regular cab longbed, manual 2.9 4x4

Parts BroncoII's x 3
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