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Weird Overheating Problems!

 
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Old 04-26-2013, 09:26 PM
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Icon5 Weird Overheating Problems!

Hey guys, so I have a 95 Honda Prelude (manual tranny) and the temperature gauge in my dash has been going almost to the red section, but it only does this if I turn on my AC or my headlights. I don't know where to start and this is driving me mad!!! Please help!
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Old 04-27-2013, 08:59 AM
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Re: Weird Overheating Problems!

When turning on your a/c does a cooling fan come on at the same time? It should. If not check all fuses.
Now getting hot because you turn your headlights on is weird. It adds a load to the alternator, which in turn to the motor, but not like the load of an a/c.

Your coolant level full? Got fresh coolant? Usually if there's an air bubble it finds it's way out sooner or later, but... may have trapped air in the coolant.

Which engine do you have?

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Old 04-27-2013, 07:01 PM
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Re: Weird Overheating Problems!

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Originally Posted by bykfixer View Post
When turning on your a/c does a cooling fan come on at the same time? It should. If not check all fuses.
Now getting hot because you turn your headlights on is weird. It adds a load to the alternator, which in turn to the motor, but not like the load of an a/c.

Your coolant level full? Got fresh coolant? Usually if there's an air bubble it finds it's way out sooner or later, but... may have trapped air in the coolant.

Which engine do you have?

All Gen. Prelude Service Manuals
Get ya a service manual ^^^ Maybe that'll help ya along the way.

I have a base model, so an SOHC F22. The cooling fan does come on when I turn on my A/C. I have a feeling that its just my ECT sensor, but I wanted to get some advice from some of you guys on here. I'm also gonna try to bleed and change the coolant.
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Old 04-27-2013, 07:58 PM
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Re: Weird Overheating Problems!

See if someone you know has a laser thermometer to measure the temperature of the engine when your gauge is reading high.
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Old 04-28-2013, 09:11 PM
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Re: Weird Overheating Problems!

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See if someone you know has a laser thermometer to measure the temperature of the engine when your gauge is reading high.
^this if its reading the same then ur fine but I would get the sensor changed, if it reads hotter, well then u have a problem, but thats the best way to c
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Old 04-28-2013, 10:18 PM
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Re: Weird Overheating Problems!

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Originally Posted by LudimusPrime View Post
See if someone you know has a laser thermometer to measure the temperature of the engine when your gauge is reading high.
what would a normal temperature be? I've heard its somewhere around 190 F
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