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98 MonteroSp Overheating on Highway
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Jessiah331
New User
Oct 30, 2009, 10:26 PM
Post #1 of 4
(1405 views)
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98 MonteroSp Overheating on Highway
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Hey guys, I've found a million threads about this same problem with all different vehicles, but never found a conclusive answer.
1998 Montero Sport, V6. Not sure of mileage but somewhere in the mid 100's (not sure if its the original engine).
I'll start with the morning. When I crank my car, big plumes of white/grey smoke come out of the exhaust, and the first few times I accelerate through the neighborhood. It also makes a slight gurgling noise coming from the engine bay.
In between work and school (just city driving) and on the main roadway (holding speeds of around 45 constantly) the car works fine. If I get on the Highway/Interstate though, problems arise. Usually when I hit 70 (for about 2 minutes) it begins to overheat. If I drop down in the right lane to about 55 it goes down, and sometimes turning the heater on helps lower it a bit as well. If it continues for too long (5 minutes) then I start to lose antifreeze... and it goes fast.
I've replaced the: radiator, hoses and clamps, and thermostat and gasket. I've also used 3 different kinds of antifreeze. Any more questions about the situation just let me know!
Thanks!!!
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Oct 30, 2009, 11:15 PM
Post #2 of 4
(1397 views)
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Re: 98 MonteroSp Overheating on Highway
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Sounds like a head gasket issue,
T
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Hammer Time
Ultimate Carjunky
/ Moderator
Oct 31, 2009, 3:56 AM
Post #3 of 4
(1390 views)
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Re: 98 MonteroSp Overheating on Highway
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Yep, your previous overheating has done serious internal damage. You either have a blown head gasket or cracked head and you need to stop driving it immediately and get it repaired.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Jessiah331
New User
Oct 31, 2009, 2:37 PM
Post #4 of 4
(1374 views)
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Re: 98 MonteroSp Overheating on Highway
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Thanks for the help and quick responses! (Represent Boston T!)
Anyways, I was kind of hoping it was something smaller that could be easily replaced, but it looks like I just need a new engine all together.
Once again, thanks for the help you guys!
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