Cold engine at freeway cruising speed

andrewsarg101 · 11-28-2005, 08:33 AM

Does anyone else's ti run cold while driving on the freeway at cuising speed? I was driving home from Las Vegas and my engine was only at the 1/4 mark, but when I got in town it got back to the normal temp. It was 38 degrees outside and had plenty of cold air going through it on the freeway, but I have never seen this happen in other cars before in similar situations.

mischief · 11-28-2005, 08:39 AM

same thing here my car is doing the same and it take my car forever to worm up i think there is something wrong

aceyx · 11-28-2005, 09:07 AM

It may be the thermostat. Try turning the HVAC to cold, then turn on the heat. Engine temp should noticeably drop.

andrewsarg101 · 11-28-2005, 09:20 AM

i would try that, but my heater control doesn't work

hint hint vigilantemotors... it's fine around town so im not worried about it.

Tyler · 11-28-2005, 05:24 PM

Mine is the same also,i'll drive my car 70 miles to boston and it's at the 1/4 mark the whole time,then once in the city it climbs to halfway. I know this wasn't like this last year.

Viper3812 · 11-28-2005, 05:41 PM

Same happend last night when I was going back to Orlando, but I am in warm Florida.

DustenT · 11-28-2005, 05:55 PM

That doesn't sound right. Might sits at the half way mark all the time. I'm in Wisconsin and even when it's below zero, it still sits in the middle. I would check your fluid level, make sure you have enough antifreeze. Also, the therostats on our cars are known to be junk. Replace it if you haven't already.

When the gauge is at the 1/4 mark, how hot is your heater? Does it get warmer in town when the gauge jumps up to 1/2 way?

Tyler · 11-28-2005, 06:00 PM

Quote:

Originally Posted by DustenT

That doesn't sound right. Might sits at the half way mark all the time. I'm in Wisconsin and even when it's below zero, it still sits in the middle. I would check your fluid level, make sure you have enough antifreeze. Also, the therostats on our cars are known to be junk. Replace it if you haven't already.

When the gauge is at the 1/4 mark, how hot is your heater? Does it get warmer in town when the gauge jumps up to 1/2 way?

Mine did last year,i noticed within the past 4-5 months it's been really low even when cruising on the hgwy for an hour. But last year it was always at the half way mark. My anifreeze is at the cold mark on the car,was low during the summer and added more since then it hasn't dropped.

mischief · 11-28-2005, 06:08 PM

Quote:

Originally Posted by andrewsarg101

i would try that, but my heater control doesn't work

hint hint vigilantemotors... it's fine around town so im not worried about it.

your not worried this could damage your motor i think you need to get it fixed

L84THSKY · 11-28-2005, 06:24 PM

I'm in New York....my temp is the same as DustenT

Quote:

Originally Posted by DustenT

Mine sits at the half way mark all the time.

CirrusSR22 · 11-28-2005, 06:41 PM

Your thermostat is stuck open. It should stay halfway, no matter what vehicle speed, engine speed, heater status, external temperature, etc. The cooling at cruising speed is due to the coolant flowing to the radiator when it shouldn't be.

Mine stuck open a couple months ago. I got a new assembly from PelicanParts for $19, but I see now they are $31. Also, buy new upper/lower radiator hoses while you're at it, like I should have

It's quite easy to change, just four little bolts and two hose clamps. The worst part by far is draining/changing the coolant, it such a messy process.

Good Luck!

AlaskaBlue · 11-28-2005, 09:17 PM

Yep I second the thermostat. I had it happen to me last year. Took forever for it to warm up. At least a good half an hour of driving for it to warm up. Now it warms up after 5-10 minutes of driving, depending on the outside temperature.

robcarync · 11-28-2005, 10:04 PM

same here...thermo stuck open...takes forever to warm up...

andrewsarg101 · 11-29-2005, 06:52 AM

i would agree with the thermostat in my situation, but my engine heats up to normal temps in 5-10 min like normal and will stay there when i drive around town. And right when i got off the freeway on my way home from vegas it went back to middle and stayed there. i dont know if it was just a fluke or not. im going to take it on the freeway tomorrow night and see if it does it again.

cali-ti · 11-29-2005, 07:45 AM

it may not stick every time. it likes to mess with your head ... and is waiting to TRULY fail until it's really cold out

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