Mykeys Toy Posted July 20, 2014 Share Posted July 20, 2014 The car has done this since I brought it home. I have removed the t stat. no viual leaks detected from pump, rad, or hoses. Swapped exhaust ( cat was definately plugged) as it wouldnt rev with the old one and does so freely now. all parts of the hoses and rad feel to be the same temp so I must guess the pump is working and checked when I topped off the coolant and burped the system. So I am now down to either I missed something or I am dead wrong with the pump or radiator. What else should I be looking for a HG? I am not blowing steam so would have to be completely internal with no oil water mix. Mike Quote Link to comment Share on other sites More sharing options...
jonas Posted July 20, 2014 Share Posted July 20, 2014 Didn't see any mention in your post, is the fan kicking on? Quote Link to comment Share on other sites More sharing options...
Mykeys Toy Posted July 20, 2014 Author Share Posted July 20, 2014 Yes.. we talking less than ten minutes from cold to shut down. Quote Link to comment Share on other sites More sharing options...
wagonist Posted July 20, 2014 Share Posted July 20, 2014 You've flushed your radiator? Quote Link to comment Share on other sites More sharing options...
BirdMobile Posted July 20, 2014 Share Posted July 20, 2014 (edited) I had a similar problem witt my GL just before my rebuild. Turned out to be a head gasket leak, compression blowby into the coolant. Cool your car. Open radiator cap. Add enough coolant that you can see the surface of your coolant about halfway down the radiator cap "pipe" you add coolant to. Start engine. Watch the surface of the coolant. Steady stream of small bubbles = head gasket compression leak into coolant channels. This builds up pressure in the coolant system, blowing the coolant into the overflow reservoir. No coolant = no cooling... engine temp rises rapidly. . . Edited July 20, 2014 by BirdMobile Quote Link to comment Share on other sites More sharing options...
Mykeys Toy Posted July 20, 2014 Author Share Posted July 20, 2014 Still could be HG.. coolant level has not diminished yet but I cant leave it running that long. I have not flushed the rad yet it is on the to do list just to make sure.. I need to see if I have a spare water pump also and the rad I can swap from another car.. Just need to make a little more time. Quote Link to comment Share on other sites More sharing options...
crawdad Posted July 21, 2014 Share Posted July 21, 2014 My 1985 did that it was the radiator it was clogged half way up,and there was sludge in the oil pan clogging the screen. it would heat up to red line in less than 10 minutes. Quote Link to comment Share on other sites More sharing options...
scoobiedubie Posted July 21, 2014 Share Posted July 21, 2014 Look for a large mouse nest between the a/c radiator and the engine radiator. Quote Link to comment Share on other sites More sharing options...
angerthis Posted July 24, 2014 Share Posted July 24, 2014 Look for a large mouse nest between the a/c radiator and the engine radiator. i found one of those could not believe it was there the car never over heated after that but most likely HG Quote Link to comment Share on other sites More sharing options...
Subruise Posted July 24, 2014 Share Posted July 24, 2014 ive got a spare rad if ya wanna swap em for shiggles Quote Link to comment Share on other sites More sharing options...
Mykeys Toy Posted July 25, 2014 Author Share Posted July 25, 2014 Thanks Rob.. I borrowed from my hatch for a minute. Waiting on a new coolant temp sensor before I throw in the towel on a waste of money. Quote Link to comment Share on other sites More sharing options...
MilesFox Posted July 25, 2014 Share Posted July 25, 2014 Make sure to burp the iar pocket. IF you seem to constantly have a pocket, or t=you have bubbles rising up as she runs, supect HG faulire. You might get lucky with a heads re torque (modify shortened 17mm socket) and or a kan of k-seal. Otherwise, replacing the gasket is easy enough, slap em on and go (prob. failed from age and corrosion, old coolant) Quote Link to comment Share on other sites More sharing options...
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