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Cooling Systems -- Problems & Solutions (Radiator, Fan, etc)

561 messages,  Last post on Nov 12, 2009 at 1:37 PM

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#533 of 561 Re: Air in cooling system or head gasket problem? [nthompson1] by imidazol97 Jul 28, 2009 (6:05 am)
Replying to: nthompson1 (Jul 28, 2009 5:31 am) What motor do you have in the TranSport?
#534 of 561 Re: Air in cooling system or head gasket problem? [nthompson1] by Mr_Shiftright HOST Jul 28, 2009 (7:38 am)
Replying to: nthompson1 (Jul 28, 2009 5:31 am) No-- coolant doesn't have to be in the oil for a head gasket failure, although that is most common. But white smoke is a pretty good tip-off. You can also smell the coolant coming out of the exhaust. Best thing is a pressure test. Then you can pull a spark plug while the system is under pressure from the pressure pump, and look for coolant right on the plug. That's a sure way to know.
#535 of 561 Re: Air in cooling system or head gasket problem? [nthompson1] by obyone Jul 28, 2009 (3:09 pm)
Replying to: nthompson1 (Jul 28, 2009 5:31 am) An overheating motor is a sure cause for head gasket failure. Depending of course on how high the temperature peaked at.
#536 of 561 Electric Fan motor not turning off by oldmetal Aug 10, 2009 (11:35 am)
I have a 1999 lexus and the radiator fan motor will not shut off and drains my battery. Any help?? Thanks Replies to this message: kiawah (Aug 10, 2009 1:47 pm)
#537 of 561 Re: Electric Fan motor not turning off [oldmetal] by kiawah Aug 10, 2009 (1:47 pm)
Replying to: oldmetal (Aug 10, 2009 11:35 am) I don't have electrical schematics for your vehicle, but I would suspect the computer has inputs on engine temperature and vehicle speed and air conditioning on/off, and then when it senses it needs the fans on it turns on a fan relay(s).   You could have a defective relay which is burnt relay points, arc welded together. Without having electrical schematics and knowing it's draining the battery down, pull that relay while parked.
#540 of 561 Re: Strange cooling system issue [roger821] by joelc1 Oct 14, 2009 (8:06 pm)
Replying to: roger821 (Jan 03, 2008 5:10 pm) Sound to me like your thermstat is sticking open or your fans are running to long which might suggest a relay problem. I link www.radiatorsrus.com title for my parts
#541 of 561 Radiator Problem by trail03 Nov 04, 2009 (12:13 pm)
Had a few problems with a 99 camaro replaced the all the parts like the waterpump,sensor,therm,hoses,but not the radiator because it still looks good. I took all the air out of the radiator after leting it run for awhile it drives good but every morning i have to add water to the radiator about a 12 oz cup or more. The car does not smoke or overheat it runs good can someone tell me if this normal. Replies to this message: burdawg (Nov 04, 2009 1:35 pm) kiawah (Nov 05, 2009 4:36 am)
#542 of 561 Re: Radiator Problem [trail03] by burdawg Nov 04, 2009 (1:35 pm)
Replying to: trail03 (Nov 04, 2009 12:13 pm) No, it's not normal to keep having to put water (or coolant) in once it's properly filled up. You should have it pressure tested to see it the cooling system has a leak somewhere.

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