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Old 05-02-2011, 02:11 PM   #11
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Quote:
Originally Posted by drostedrummer89 View Post
See I said 98 is normal for most modern cars, 102 is nothing to worry about. You said 107 at times, which is probably a little high. I will do it on the way home tonight, around 7 pm eastern.

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Wasn't sure if this was to me. But, i'll reply. I think your right, 107C is high as the fan comes on at 105C. I thought if your cooling system was running right, on the highway a fan isn't needed (excl desert temps outside)?

Curious to see what you post.
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Old 05-02-2011, 03:38 PM   #12
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It was to davey, but you posted before I could get the post to go through... lol so it looked like I was replying to you. I also agree, I thought cooling wasn't an issue at 70 mph. *shrug*

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Old 05-02-2011, 03:42 PM   #13
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Quote:
Originally Posted by drostedrummer89 View Post
It was to davey, but you posted before I could get the post to go through... lol so it looked like I was replying to you. I also agree, I thought cooling wasn't an issue at 70 mph. *shrug*

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It's all good. At 70 mph that's a lot of wind. Well see after your post of your pics. I am curious if my t-stat mod is keeping it cool, or his is just running hot. lol
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Old 05-02-2011, 03:52 PM   #14
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Lol we will certainly find out soon! I might make a video of my drive home. Not sure yet.

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Old 05-02-2011, 10:51 PM   #15
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I made a video of my drive home, but its 720P, and 25 min long, so photobucket said no thanks to that.

*my cooling system is completely unmodified- stock thermostat, housing, radiator, and coolant mixture.*

Temperature: ~50 F
Traffic: very light
Time 7:30 pm
Driving style: very modest (except for one downshift, redlining 4th.)

35-40 mph (5 minutes) 63C

70-75 (20 minutes consistent) 88 gradually up to 97 C

Idling at a Red light (30 seconds) 98 C

75- 106 (10 seconds) 97, after I let off throttle it went down to 91 C

50-60 (15 minutes) 89- 95 C avg

End temp: 93 C

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Old 05-02-2011, 11:28 PM   #16
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Great post Matt! My conclusion is the OP car is indeed running hot @ 107C. I also feel that mine runs cooler because of my t-stat modification. This is keeping coolant following always.

I also did another run tonight.

Speed: 68 mph
Outside temp: 67*F
Traffic: Light (few cars)
Engine temp: 78C "172F"
Length: 5 miles on freeway and 2 miles before freeway. Cruise control was set the whole time.

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Old 05-02-2011, 11:51 PM   #17
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Yea, I agree. Even when I dropped it to 4th and ran out of gear, and upshifted and bounced off the speed limiter, my temp never even touched 99C one time.

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Old 05-03-2011, 01:30 AM   #18
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Lets try this, all 3 of you go out and measure the resistance of the sensor when you wake up, stone cold car, and list the outside temp at that point in time.
The connectors' a bitch to get to. Down by the alternator and no room to get hands in there. From underneath you might get it. Or probe pin #38 on the ECU.


I wouldn't doubt if Dave's resistance is off ... corrosion somewhere could easily do this.
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Old 05-03-2011, 06:51 AM   #19
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Factory stock tune the LOW speed fan is not set to come on till 230 deg off at 220 , HIGH speed fan is not set to come on till 246 deg off a 232 the safety limp mods wont turn on till 265 deg

Stock tune the fans turn off at 53 mph

I dont like of trust the dash read for accurate temps or anything

Most Foci cruise down the hwy at over 195 deg even with a tune and 180 thurmostat

Tom
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Old 11-13-2013, 08:19 AM   #20
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temps

ford focus se, 2000 , zetec DOHC
OUtside temp 40 degrees F
measurements taken from Dash Sensor (odometer)
Both Fans work (tested with AC on)
Fan Operation correct?? Can't be under car while driving :-)
no hose pressure on top hose, at any time.
very recent coolant change 50/50, no blockage

750 RPM temp 103-106 Cent (Idle in gear- trafic light)
2000 RPM temp 100-102 Cent (Street driving 3-45 MPH)
3000 RPM temp 107-110 cent (highway , speed cntl, 70MPH)
3500RPM temp 110+

Guage is BS so no report on guage, it is always center w/little movement)

During Summer months, AC on, Car does go close to RED on temp guage, at approx 2200-3000 RPM. Haven' been able to see dash temps as weather has changed to 40-50 F outside with AC on

Is there a way to read the expected Fan turn on temp via scanguage 2?

why is temp varying at all ranges?


WTH is going on here?
low RPM = high temp
Mid RPM = avg temp ?
High RPM = high temp
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