overheating

nightcrawler09 · 07-16-2009, 05:37 AM

Hey yall. just got my old truck back. Its 88 nissan hardbody. I flushed the block and radiator and put a new thermostat on it but it still overheats.

its not the head gasket and its not leaking water. Any ideas???

leolkfrm · 07-16-2009, 05:40 AM

fins on the radiator are shot? they cool the coolant as it passes thru...rub a finger on them, if they bend easy it is shot

nightcrawler09 · 07-16-2009, 05:44 AM

would have never thought of that

bradrhale · 07-16-2009, 05:54 AM

have you ruled out a problem with the pump yet??

nightcrawler09 · 07-16-2009, 06:01 AM

well it hasn't been leaking anyhting so i figured it aint the pump

gmctrucks · 07-16-2009, 11:00 AM

I just replaced my fan clutch because it couldn't take this TEXAS heat im sure you know about it. Look for signs of oil around it if it has some it's needing replacing.
Good luck! GMC

nightcrawler09 · 07-19-2009, 08:28 PM

hey sorry for the delay. been on the road!! but my fan is belt driven

gmctrucks · 07-19-2009, 09:52 PM

Quote:

Originally Posted by nightcrawler09

hey sorry for the delay. been on the road!! but my fan is belt driven

It still might have a clutch on it.
Good luck! GMC

leolkfrm · 07-20-2009, 06:10 AM

did you check the radiator fins?

95nissan · 07-29-2009, 06:29 AM

I bet its the water pump. If you take off the fan and remove the belt-pulley. Try turning it. it will probably roll very freely. If so replace it.,
The new one will barely turn.

j

07-16-2009, 05:37 AM	#1
nightcrawler09 Junior Member Join Date: Jul 2009 Location: texas Posts: 5	overheating Hey yall. just got my old truck back. Its 88 nissan hardbody. I flushed the block and radiator and put a new thermostat on it but it still overheats. its not the head gasket and its not leaking water. Any ideas???

07-16-2009, 05:40 AM	#2
leolkfrm Senior Member Join Date: Mar 2008 Location: N.Y. Posts: 4,933	fins on the radiator are shot? they cool the coolant as it passes thru...rub a finger on them, if they bend easy it is shot __________________ 4 wheels move the body 2 wheels move the soul B.W.A.I

07-16-2009, 05:44 AM	#3
nightcrawler09 Junior Member Join Date: Jul 2009 Location: texas Posts: 5	thanks would have never thought of that

07-20-2009, 06:10 AM	#9
leolkfrm Senior Member Join Date: Mar 2008 Location: N.Y. Posts: 4,933	did you check the radiator fins? __________________ 4 wheels move the body 2 wheels move the soul B.W.A.I

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07-16-2009, 05:54 AM	#4
bradrhale Senior Moderator Join Date: Apr 2006 Location: Texas Posts: 9,566	have you ruled out a problem with the pump yet??

07-16-2009, 06:01 AM	#5
nightcrawler09 Junior Member Join Date: Jul 2009 Location: texas Posts: 5	well it hasn't been leaking anyhting so i figured it aint the pump

07-16-2009, 11:00 AM	#6
gmctrucks Senior Member Join Date: Nov 2006 Location: Houston,Texas Posts: 4,645	I just replaced my fan clutch because it couldn't take this TEXAS heat im sure you know about it. Look for signs of oil around it if it has some it's needing replacing. Good luck! GMC

07-19-2009, 08:28 PM	#7
nightcrawler09 Junior Member Join Date: Jul 2009 Location: texas Posts: 5	hey sorry for the delay. been on the road!! but my fan is belt driven

07-29-2009, 06:29 AM	#10
95nissan Junior Member Join Date: Jul 2009 Posts: 7	I bet its the water pump. If you take off the fan and remove the belt-pulley. Try turning it. it will probably roll very freely. If so replace it., The new one will barely turn. j

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