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Overheating #1028032 05/11/11 03:58 AM
Joined: Apr 2011
Posts: 18
fatrat Offline OP
Need a Spot
I drove my 89 Montero to work for the 1st time Friday & I noticed the temp got above normal while in traffic but then would go back down when moving. Yesterday I drove it all day then on the way home I took a backroad & it started going above normal again then the engine started pinging & died on a hill. I let it cool for about 45 minutes, added water & drove about 2 miles before it started pinging again so I pulled over again. This time when I added water it poured out the bottom of the radiator so I got a tow home. I obviously need a new radiator & from what I read (while waiting for it to cool) it seems like I probably need a new fan clutch, so where would you guys suggest getting the new hardware? Also, should I have any tests ran since this Monty is new to me & the PO had the radiator replaced less than 3yrs ago?

Thanks in advance!


89 LWB V6 auto - LSD - OME coils, torsions, & nitrochargers - Rugged Ridge hubs -
Re: Overheating [Re: fatrat] #1028033 05/11/11 01:53 PM
Joined: Jul 2009
Posts: 1,342
RECON45 Offline
Body Damage is Cool
A compression test to help check there is no head issues. Get the known stuff fixed and then start with the unknown. crank it up and let it sit running to see if the other sounds and problems come up. hopefully it is just the radiator and the fan you said and nothing else.


91 Montero LS "Sandstorm", Auto, Dual Bouncy Seats, 2" Suspension lift, 2" Body Lift, GENII front IFS, 32" MT tires

89 Raider "Trailbreaker", 3.0, Auto, Dual Bouncy Seats
Re: Overheating [Re: RECON45] #1028034 05/11/11 02:59 PM
Joined: Jan 2001
Posts: 13,649
fasteddy Offline
Web Wheeler
*****
I'd see if you can find a good set of tanks from an oem radiator, as they are vastly superior, and get it recored with a 3row core.

I'd also retorque the cylinder heads to try to save the head gaskets, as when the head gets hot, it bows, and it will stretch the head bolts and lose the gasket seal.


Not responsible for advice not taken...
Re: Overheating [Re: fatrat] #1028035 05/11/11 06:29 PM
Joined: Sep 2001
Posts: 8,557
LandRaider Offline
Forum Moderator
*****
Overheating while stopped, and cooling down while moving are indicative of a fan / fan clutch problem.

Better be careful with that 2.6.... If you overheat it much, it will crack the head if you have not done that already.


87 Raider 4D56td v5MT1
31's..Basically Stock
Re: Overheating [Re: fasteddy] #1028036 05/12/11 12:15 AM
Joined: Apr 2011
Posts: 18
fatrat Offline OP
Need a Spot
Good info!

Fasteddy- Know where I can get my hands on oem tanks locally?

Thanks for the replies!!!


89 LWB V6 auto - LSD - OME coils, torsions, & nitrochargers - Rugged Ridge hubs -
Re: Overheating [Re: RECON45] #1028037 05/12/11 12:26 AM
Joined: Jan 2011
Posts: 95
P
perucho Offline
Getting the Wheeling Fever
A compression test won't tell you much. Do a leak down test if you think there is a problem with a warped head. At least with a leak down test you know if it's the head gasket, valves, or piston rings giving you problems.


Oscar
Re: Overheating [Re: perucho] #1028038 05/12/11 05:08 AM
Joined: Apr 2006
Posts: 1,193
mxmikie Offline
Body Damage is Cool
i have a new fan clutch $45.00 mailed


it dosent have to be surrounded by water to be an island
Re: Overheating [Re: fatrat] #1028039 05/13/11 01:57 AM
Joined: Jun 2004
Posts: 1,513
S
sasnydley Offline
Body Damage is Cool
Make sure you flush whole system While replacing radiator AND Fanclutch. Also Use antifreeze- For some reason a lot of people think they don't need antifreeze here in the south- ?- <img src="/forums/images/graemlins/zombie.gif" alt="" />


1990 Black Monty LS Over 300K' 1993 Isuzu Rodeo LS 4x4 46k (yes only 46K!)1989 Honda Transalp 600 Africa twin,
Re: Overheating [Re: sasnydley] #1028040 05/14/11 02:22 PM
Joined: Apr 2011
Posts: 18
fatrat Offline OP
Need a Spot
Quote
Use antifreeze- For some reason a lot of people think they don't need antifreeze here in the south- ?- <img src="/forums/images/graemlins/zombie.gif" alt="" />


Last summer I bought antifreeze at Wally World & the guy running the register said he thought antifreeze was only for winter. Lmao! <img src="/forums/images/graemlins/notooth.gif" alt="" />


89 LWB V6 auto - LSD - OME coils, torsions, & nitrochargers - Rugged Ridge hubs -
Re: Overheating [Re: fatrat] #1028041 05/15/11 04:06 AM
Joined: Jan 2001
Posts: 13,649
fasteddy Offline
Web Wheeler
*****
WHich is why he was running the register at Wildmart - not enough brains for a real job...

Down here, I use a gallon of antifreeze to two gallons of water plus 1tsp of Dawn as a water wetter. Enough a/f for the temps we get here, more water for more heat capacity, and the Dawn is a really good surface wetter to maximize heat transfer.

Sorry, no leads on a set of oem tanks. Check the Pullapart inventory. Seem to remember one in the east lot.


Not responsible for advice not taken...







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