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Old 01-31-2014, 07:28 PM   #1
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water temp spikes??

1998 3.8. This is my first mustang so this may be normal but it just seems odd to me...when driving at normal speed my water temp stays in the "normal" section but every few minutes it will slowly creep up to the hot side. It gets all the way up and stays there for only about 5-10 seconds then rapidly goes back down to the mid section of normal. Is this a normal occurrence on mustangs? (The weather is cold...I live in Atlanta so Im sure you've seen what kind of weather Ive been dealing with, the radiator is full with anti-freeze)


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Old 01-31-2014, 07:42 PM   #2
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Are you using the factory temp. sensor?
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Old 01-31-2014, 08:01 PM   #3
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not normal at all lol be careful you could destroy your engine if it hits the red line. If you car is over heating put your heat on full blast and it will help bring it down. but that's just temporary!.... I assume if your having poor weather you have your heat on... wonder what would happen if you turn your heat off how quickly she would go to hot
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Old 02-01-2014, 04:09 AM   #4
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I'm sure it's the factory sensor, I've never changed it but idk about previous owner and I actually played with the heater on the way to work today before I even read this but I didn't seem to notice any difference with heater on/off...I did notice today however the heater took alot longer than normal to start blowing hot air?
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Old 02-01-2014, 04:18 AM   #5
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change your thermostat and then go on with your day
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Old 02-01-2014, 04:21 AM   #6
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pretty simple. found you a video on how to
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Old 02-01-2014, 05:03 AM   #7
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ok ill get on that today but ive been doing some exploring on other sites and almost 100% of them say that i have air in my collant system (and i just added anti-freeze last week so im sure theres air in there) but out of all those sites not one gives me the steps or a good enough reference to flush/burp my system??
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Old 02-01-2014, 05:11 AM   #8
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just take the cap off and run your car itll bubble for a bit
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Old 02-01-2014, 05:15 AM   #9
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Quote:
Originally Posted by KraftDinner View Post
just take the cap off and run your car itll bubble for a bit
exactly what im looking for not the 8 paragraphs other people have been writing..thanks ill get on that after work and let you know how it goes.
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Old 02-01-2014, 08:17 PM   #10
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I think it'd be the thermostat also
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Old 02-02-2014, 08:09 AM   #11
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bleed the system really well last night and filled it back up..ran like a dream this morning...temp nerver rose past the "R" in normal THANKS
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Old 02-04-2014, 12:32 AM   #12
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My temp sensor had a loose connection on the engine, I pinched it with pliers, put it back on and it worked fine.
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