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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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#532 of 561 Air in cooling system or head gasket problem? by nthompson1 Jul 28, 2009 (5:31 am)
After having had installed new radiator/cap, thermostat, coolant, etc., engine still overheats. The new radiator cap only turns tight once; the old one said to align arrows with cooling tube(turned twice, one pushed down hard). Any suggestions on correct burping procedure? White smoke comes out the exhaust; mechanic says this means blown head gasket. I thought that with a blown head gasket, the coolant went into the oil(this is not happening). With the new radiator, etc.,, I am not losing any noticable amount from the overflow or radiator. If it was the head gasket, wouldnt I be losing coolant? The manual says to fill radiator to neck of radiator. I am wondering if filling to the top(by myself and mechanics, etc.) is causing air problems. Vehicle is 1997 Pontiac Trans Sport. I definitely got ripped off(cracked plastic radiator end) from seller. But I have met many more wonderful people, including those on this forum. 99% of people are good. Thank you, Replies to this message: imidazol97 (Jul 28, 2009 6:05 am) Mr_Shiftright (Jul 28, 2009 7:38 am) obyone (Jul 28, 2009 3:09 pm)
#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)

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