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WTF What is wrong with my engine temp?

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Old 05-26-2006, 10:21 AM
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Unhappy WTF What is wrong with my engine temp?

Hey all,
I just gave my car a tune up, new oil, oil filter, air filter, plugs, pcv, etc. Before giving my car a tune up the engine temp gauge always moved to the half way point and never moved past after warming up. Now After the tune up it will go up to the half way mark and after driving on the highway for like 5 mins in 6th gear, its starts to creep up almost to the 3/4 mark. This is while driving at around 65, and fans on. (I can hear them kick on). The temp may come back down to the halfway mark for a little and then start climbing again. WTF is going on?
Thanks in advance
Old 05-26-2006, 10:34 AM
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Did you work on anything with the cooling system? Sounds like you might want to fluch your radiator. IDK though, none of the items in your tune up should make your car do this.
Old 05-26-2006, 12:17 PM
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Unless you have a 98 the temp gauge is pretty much useless anyway. It will only tell you if you are overheating. As long as your not in the red I wouldn't worry about it. If you have a 98 the temp gauge is more of a real gauge.
Old 05-26-2006, 12:43 PM
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Did you disconnect/damage the ECT sensor when you did the #1 plug?
Old 05-26-2006, 01:00 PM
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Originally Posted by Mike02Z
Unless you have a 98 the temp gauge is pretty much useless anyway. It will only tell you if you are overheating. As long as your not in the red I wouldn't worry about it. If you have a 98 the temp gauge is more of a real gauge.

Why do you say that?
Old 05-26-2006, 01:13 PM
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Originally Posted by LS1Aggie09
Why do you say that?
It is pretty well known that only the 98 fbody has a real temp gauge. The 99-02 are not accurate at all and will only tell you once you are overheating. Dunno why GM did that but as I said it's talked about here a lot.

Read this thread....Post 2 point number 3.

https://ls1tech.com/forums/new-ls1-owners-newbie-tech/213148-jrp-s-faq-commonly-asked-questions.html
Old 05-26-2006, 01:54 PM
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did you take the air dam off and forget to put it back on?
Old 05-26-2006, 02:16 PM
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Thanks for the replies guys. Well the only reason it concerns me is that prior to the tuneup the needle never fluctuated. Now it obviously does. I will check to see if i may have not connected the plug near #1. I will also look into other possibilities. If anyone else has comments please keep them coming...
Old 05-26-2006, 02:18 PM
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Thunderstruck...sorry i forgot to mention the answer to your question, but no i never removed the air damn. I havent touched it since adding my FTRA before the tune up.
Old 05-26-2006, 03:20 PM
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Reasoning for the guage change is customers were complaining of too much movement on the temp gauge on the 98's. As for the poster, burp your coolent (take the cap off when the motor is cold, and run the car to operating temp and let it run for about 5 mins to get all the bubble out) and check your temp sensor on the driver side head to make sure you didnt bang it.
Old 05-27-2006, 02:29 AM
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bleed your cooling system, see if you get any extra air out... hows the coolant/water level in there?




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