Heating up on Highway
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From: Hereford, Tx (near amarillo)
Heating up on Highway my brother's car is a 94Z A4. it does good in town driving normal temp. but when we get on the highway at a steady speed his temp starts to climb slowly. it has coolant. his fans are working as well. his RPM's at 70 are about 2300 or so. well before i forget to mention he barely swaped his 2.73's to 3.73's. would this be a problem with the car to act like this?
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From: Hereford, Tx (near amarillo)
Originally Posted by onebadbird96
i have a problem like that but backwards from you i get on the highway at a steady speed the temp gos down around townit goes up hmmm? what the hell
you might want to check your fans. and the fuses to the fans. or the fans themselves. check your radiator cap and your thermostat. check your hoses as well.
If the thermostat is stuck open, the water is going through the radiator too fast and does not have time to cool. If the water temp, comes down after you get off the highway, I would definately say it sounds like a stuck thermostat.
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Doesnt really sound like fans would be the problem, the rearson you hear this problem in reverse is because when the cars moving on the highway, the air dam diverts enough air in to the radiator to keep the car cool. When it gets in traffic, no air flow and it over heats due to fan problem. His car doesnt get hot in town, only when moving which is really weird.
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From: Hereford, Tx (near amarillo)
i've already put a stock replacement thermostat twice. would it be the waterpump itself? i need to take a real close look at it tommorow in the day time.
Originally Posted by LT1_King
i've already put a stock replacement thermostat twice. would it be the waterpump itself? i need to take a real close look at it tommorow in the day time.
I had this problem once and it turned out to be the air damn being ripped off and not deflecting air through the radiator but only on the highway because the fans kept it cool at low speeds. I was new to the f-bods then (bout 7 years ago) but thats what I found out. Hope this helps.
Had the same symtoms on mine, it turned out to be a partially plugged radiator. Drop the fans and feel the radiator after it's warmed up good. Mine was only flowing thru about half of the radiator, the rest was cold to the touch.
Originally Posted by Low N Slow
Had the same symtoms on mine, it turned out to be a partially plugged radiator. Drop the fans and feel the radiator after it's warmed up good. Mine was only flowing thru about half of the radiator, the rest was cold to the touch.
Same here. It would be ok around town but on the highway it would run too hot. My radiator was full of crap. Got a new one and it's all good now.
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From: silver Spring MD
Originally Posted by LT1_King
you might want to check your fans. and the fuses to the fans. or the fans themselves. check your radiator cap and your thermostat. check your hoses as well.
Originally Posted by Low N Slow
Had the same symtoms on mine, it turned out to be a partially plugged radiator. Drop the fans and feel the radiator after it's warmed up good. Mine was only flowing thru about half of the radiator, the rest was cold to the touch.
hey just reading the thread my car does the same thing it runds good around town but on the highway doen about 75mph steady it heats up more than half way i got a new pump and a new 160*thermostat my fans are connected direct so they are on all the time also have the air deflector right any ideas of what it could be i heard it could be a minor blown head gasket i hope not its a rebuilt 355 about 6500 miles on it wuts the problem with the lt1s overheating?? anyone 