LT1-LT4 Modifications 1993-97 Gen II Small Block V8

My car runs too damn hot!

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Old 07-16-2010, 04:31 PM
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Default My car runs too damn hot!

Now tomorrow morning im running my own wires to power the fans w/ high and low speed.

But what else could cause this? After my car has kind of heated its self up because im stuck at a light too long the next time i stop, itll heat up so quickly. i have a 160 thermo but while driving at a good speed itll work its self down to the 2nd line. but after sitting too long and it hits 210, from there on out itll just cruise up to red line. its extremely scary
Old 07-16-2010, 04:32 PM
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after it running so hot once i turn the car off i hear the coolant boiling and sometimes itll actually boil over!
Old 07-16-2010, 04:33 PM
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Get yourself a tune and have them set to come on at 160. That's normal for these cars to do.
Old 07-16-2010, 04:45 PM
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how do you do that through jet tuning software?
Old 07-16-2010, 04:49 PM
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Check out pcmforless.com, they'll get ya what ya need.
Old 07-16-2010, 06:20 PM
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Eh, boiling coolant is NOT NORMAL! Nor will it be fixed by a tune unless your car is running awfully poorly due to lack of a tune.

Normal suspects for overheating are bad fan motors, water pump, poorly bled cooling system etc...
Old 07-16-2010, 06:33 PM
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Get ready for a head gasket change. My thermostat stuck and caused the coolant to boil, then a month later my motor hydro-locked when went to start it.
Old 07-16-2010, 09:12 PM
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Default 2X Vote!

Yep - I'm replacing my head gaskets right now - DoublePlusUnFun!

10 out of the 12 Exhaust bolts were only finger-tight (!) and the rear-most cylinder head bolts around Cylinder 8 were 'torqued' to about 15 ft-lbs - You just gotta' LUV Dealership Technicians!

Originally Posted by speed_demon24
Get ready for a head gasket change.
If your car sees temps high enough to boil coolant, that is a big warning flag.
Old 07-17-2010, 09:35 AM
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The heads have not even 1k miles on it.
If anything I'm gonna have to think something is wrong with my radiator.
Old 07-17-2010, 09:38 AM
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I have the jet dyno stuff. If someone can tell me where in the program you go to to change the thermo stat setting that'd be great!
Old 07-17-2010, 09:54 AM
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Originally Posted by 05HD
Eh, boiling coolant is NOT NORMAL! Nor will it be fixed by a tune unless your car is running awfully poorly due to lack of a tune.

Normal suspects for overheating are bad fan motors, water pump, poorly bled cooling system etc...
I am in NEED of a tune. Lt pacesetters. Cc 503
Old 07-17-2010, 12:43 PM
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Anything?
Old 07-17-2010, 12:57 PM
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so 210 degeee at idle on hot weather is normal ? and it come back down as soon you driving, sound normal ? cause I alway have my hypertech tune at 180, and my tempeture alway stay at 170-180 all time.
Old 07-17-2010, 01:18 PM
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I have had the same problem with my
Old 07-17-2010, 03:11 PM
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1. It is not because your car needs tuned.

2. It is NOT normal for this to happen.

3. SOMETHING IS WRONG.

Start from the beginning and check everything. Make sure both fans are kicking on and bleed the system. Are you losing any coolant over a period of time?
Tuning is only going to lower the temp at which the fans come on, nothing else. In your case, it is going to be fairly normal for your car to reach 210, but it should not be going any higher.
Old 07-17-2010, 03:52 PM
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Originally Posted by Penz
1. It is not because your car needs tuned.

2. It is NOT normal for this to happen.

3. SOMETHING IS WRONG.

Start from the beginning and check everything. Make sure both fans are kicking on and bleed the system. Are you losing any coolant over a period of time?
Tuning is only going to lower the temp at which the fans come on, nothing else. In your case, it is going to be fairly normal for your car to reach 210, but it should not be going any higher.
The dude's running a cam without a tune. Stock tuned cars do what he's talking about.
Old 07-17-2010, 06:04 PM
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If the car has a cam it needs to be tuned and that is all there is to it... the temp that is needed to turn on and off the fans should be lowered, as in a tune, this will decrease the chance of the motor detonating, my N/A motor ran warm after I first put a cam in it ( un tuned ) I just ended up wasting alot of effort trying to mask it until I got it tuned
Old 07-17-2010, 07:15 PM
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My car always ran hot unless the a/c was on or going down the road. then i got a hypertech and set it to 160 and it never gets hot with the a/c off now.
Old 07-17-2010, 08:05 PM
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okay i got the fans hooked up through my own wiring. i love it! it plugs into the radiator and once it hit a certain temp it kicks on. i installed a switch to switch from low to high speed. With fans running it can maintain the temp. Low speed temp will gradually rise at a stoplight in 105 deg. Texas weather! hah
High temp keeps it at 190-195ish. In winter/spring/fall it stayed at 185 and it NEVER EVER reached 210 no matter what circumstances.
I really need to know how to change the temp setting through JET DYNAMIC SPECTRUM.
I plan on getting a dyno very soon from Moe Bailey. Just trying to scrape up some cash lol
Old 07-17-2010, 09:25 PM
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how much do you want for you JET DYNAMIC SPECTRUM


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