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Old 02-07-2008, 12:37 AM   #1
nismo4life
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Location: Rocky Hill, CT
Default Coolant temp gauge on the fritz?!?! Help

I have a 208,000 mile 2.2 OBS. Don't know when the Timing belt or Water pump was last done but I will get it done next week. I am leaving in 12 hours for South Carolina to the Sand Blast Rally with my brother who is racing in it so I need you guys to anwser asap. I think my Coolant Temp Sensor might have gone bad. I started to overheat one day. Changed the Thermostat and problem persisted. Ended up that my rad was broken on the top plastic piece, replaced it and all was well. Recently my temp gauge started rising. This is were it gets real weird.

If I am driving and it starts to go up, If I come to a stop and shut the car off, and then immediately turn it back on 8/10 times it will go back to proper operating temperature almost instantly. Tonight I was giving it a test drive since I just finished installing a new clutch/flywheel/2nd gear shift fork and I stopped at a intersection. Needle started climbing. Eventually hit the checkered part of the gauge at the top at the H. I turned the Heat on full blast and mind you my heat is still hot, clutch in or not unlike some others who have posted this issue. I look at the gauge and nothing, so I get pissed, take a left turn and romp 1st-4th. I look down and the ****ing gauge is going down AS IM BEATING THE PISS out of my car from maxxed out at the H to just under the mid point. WTF?!??! Is it possible that my temp sensor is crazy?! How hard/long of a job is it to change the water pump!?
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Old 02-07-2008, 12:45 AM   #2
Wiscon_Mark
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Join Date: Aug 2005
Chapter/Region: MWSOC
Location: Plover, WI
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2012 Impreza
Sport Limited DGM

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I'm having a similar problem with my temp guage. Try hitting the cluster or the dash and see if it doesn't bounce around (it shouldn't if it's doing its job correctly). I'd like to get an aftermarket guage soon in case it actually does overheat and I just ignore it.
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Old 02-07-2008, 12:58 AM   #3
Major Johnson
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Location: Orlando, FL
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2007 FXT Sports
World Rally Blue

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I couldn't tell you what's going on but if you've got an extra $150 laying you could pick up a Scan Gauge and it'll tell you real time exactly what the temp is instead of "low", "ok", or "oops too late".
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Old 02-07-2008, 09:24 AM   #4
nismo4life
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Quote:
Originally Posted by Major Johnson View Post
I couldn't tell you what's going on but if you've got an extra $150 laying you could pick up a Scan Gauge and it'll tell you real time exactly what the temp is instead of "low", "ok", or "oops too late".
You mean one of the OBDII scan tools?!
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Old 02-07-2008, 12:25 PM   #5
nismo4life
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I went to Scoobaruu stealership and one of the techs was nice enough to look at the car real quick. When I changed the rad I left a funnel with coolant and the car running for about 15 minutes to let all the bubbles out. I guess somehow a MAJOR air pocket was created in the radiator and basically the radiator wasn't running lol. He cracked the cap slightly and a **** load of steam came out. He was nice enough to fill it back up and I've been beating the ever living piss out of it for the last 45 miles and the needle has not moved once. I'm just happy its nothing major right now since I need to drive leave for SC in an hour lol.
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Old 02-08-2008, 03:08 AM   #6
Major Johnson
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Oh well that's cool at least it was something simple like that.
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