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Old Mar 12, 2008 | 09:53 PM
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Default car wont get hot

(yes its a noob question) Well I purchased my 2nd f body a 98 t/a and I cannot seem to get the car over 175 degrees is that a bad thing? I know its always good to keep them cool but most of the time it will barely go above 160. Just dont want to break anything any help would be appreciated.

Last edited by stefan256; Mar 12, 2008 at 10:11 PM.
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Old Mar 12, 2008 | 10:07 PM
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Are the fans comming on?
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Old Mar 12, 2008 | 10:09 PM
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yes the fans work and the heater works fine
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Old Mar 12, 2008 | 10:09 PM
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Also do you know if the past owner put a lower thermo in it?
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Old Mar 12, 2008 | 10:11 PM
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no i dont know if the last owner put a lower thermo but i still figured it would get over 175 idleing for 45 minutes even with a 160 thermo
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Old Mar 12, 2008 | 10:12 PM
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Maybe the previous owner installed a low-temp thermostat or had the fans programmed to come on earlier. I think the main problem with the engine running cooler than expected would be incomplete combustion.
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Old Mar 12, 2008 | 10:13 PM
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Yeah it should, but the fans do not come on at that tempurature stock. so i'd say there has been somthing added/tuned. Just my .02 im sure somone will have somthing else to add.
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Old Mar 12, 2008 | 10:15 PM
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Originally Posted by PSU 98
Maybe the previous owner installed a low-temp thermostat or had the fans programmed to come on earlier. I think the main problem with the engine running cooler than expected would be incomplete combustion.
Please correct me if im wrong, but isn't incomplete combustion a side affect of an engine running too cool? Im not saying your wrong, just tryn to learn too!
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Old Mar 12, 2008 | 10:17 PM
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if i was getting incomplete combustion i would be losing power and gas mileage correct? Also if i didnt want to have the fans tuned to come on later if i replaced the thermostat with a 190 instead of a 160 would it help at all?
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Old Mar 12, 2008 | 10:22 PM
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It might be a good place to start. However if its not the problem, you would be bangn' your head against the wall and wasting time and money at the same time.
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Old Mar 12, 2008 | 10:22 PM
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Originally Posted by 00_transam_vert
Please correct me if im wrong, but isn't incomplete combustion a side affect of an engine running too cool? Im not saying your wrong, just tryn to learn too!
thats my problem if you read the 1st post
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Old Mar 12, 2008 | 10:26 PM
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Originally Posted by 00_transam_vert
Please correct me if im wrong, but isn't incomplete combustion a side affect of an engine running too cool?
Um, isn't that what I said? Maybe "improper" combustion is more accurate. A "too cold" engine is likely going to be running lean. Lean is not good for engine life.
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Old Mar 12, 2008 | 10:27 PM
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haha, well we never stop learning, and no matter what there's allways somone that knows a little more! Apon re-reading your first post, as long as you don't get the car too hot, there are little to no serious side-effects of running it at the temps you've stated.
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Old Mar 12, 2008 | 10:28 PM
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Originally Posted by PSU 98
Um, isn't that what I said? Maybe "improper" combustion is more accurate. A "too cold" engine is likely going to be running lean. Lean is not good for engine life.

yes deffinantly, but 170 isn't cold. I means its not 195+, but its far from cold.
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Old Mar 12, 2008 | 10:30 PM
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98 do you have any suggestions ? should i just replace the thermo with a 190 and hope it gets a little hotter or check the a/f ratio? also the it sounds like the fuel pump may be having a problem you know how it sounds when it starts up well its doing that sound while idleing it will run for about 10-15 minutes than it will do it again then idle for 10-15 minutes than do it again etc....
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Old Mar 12, 2008 | 10:39 PM
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175* might be hot if you're sticking your tongue in it, but compared to a stock LS1engine that idles just south of 210* it's running considerably colder.
If the PO is someone you know and/or are friendly with, you can ask about the mods and that might give you some idea of where to start. Installing a new 'stat isn't too expensive, just a bit of a PITA. I'm certainly no expert so I'm sure someone else here with more experience will step in and educate us all
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Old Mar 12, 2008 | 10:44 PM
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thanks for the suggestions hoping someone will read this that has had this problem before
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Old Mar 12, 2008 | 11:51 PM
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I never thought that there was anything wrong with 160-175 water temp
That would make me alot more comfortable than my stock temp at a little over 210
right now Im thinking of going to a SLP 160* Thermo
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Old Mar 12, 2008 | 11:53 PM
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well it just has me concerned been told the car could be running too lean, fans just comoing on too early etc... my heater blows pretty hot so i dont know
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Old Mar 13, 2008 | 12:14 AM
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I still dont understand how low water temp could cause it to run lean
If the water is colder than the engine is colder and colder air contains more Oxygen
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