LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

overheating problem's?

Old Aug 26, 2010 | 09:52 PM
  #1  
maroboiiZ28's Avatar
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overheating problem's?

ok so my 94 camaro is overheating like fast splashing water...has anyone had this before.....i changed temp sensore fans are working water pump good mmmmm what can it be and the thermestat is new ( if thats how u spell it) l0l helppp thank you
Old Aug 26, 2010 | 10:08 PM
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It is not clear if it was overheating before the work you did or after. Did you properly refill and bleed the system after having it opened up?
Old Aug 26, 2010 | 10:21 PM
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overheating

it was actually overheating before and after the changes....and yes i leaked everything.....its like overheating fast like 2-3 min and boom hits red and water bursting every were??????????
Old Aug 26, 2010 | 11:19 PM
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Did you fill and bleed the cooling system properly?

http://shbox.com/1/4th_gen_tech2.html#radflush
Old Aug 27, 2010 | 02:56 AM
  #5  
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actually shoebox helped me with advice, basically had same problem plus my fans werent operating. I bled the coolant lines and topped off and car has been operating at proper temp. No matter the new thermo, waterpump and coolant it needs to be bled any air and for some reason this engine is very touchy.... good luck
Old Aug 27, 2010 | 04:08 AM
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also check your hose routing on the 94's if someone else has worked on it in the past its easy to get the hoses wrong without a diagram...

i had a friend install my engine several months ago, he wasnt sure of the hose routing and he had a couple hoses wrong, and the system was building pressure then passing it through the overflow tank, causing it to overheat(temp would spike up almost just below the red then i could rev it up and it would pass the coolant and cool off quick) then basicly belch a small amount of coolant out the overflow tank..

i noticed the hoses somewhat when i was getting ready to do a throttle body bypass, i went to shoeboxes site and downloaded the 94-95 coolant hose diagram and found my steampipe hose was routed through the throttle body then to the y-hose on the driver side radiator hose , this was wrong. i corrected the routing and also completed the throttle body bypass correctly.
car runs cool now, 180-190 degrees in 100* heat.. i havent noticed the 2nd fan come on yet, i programmed it to come on at 195..

i do still have a problem with coolant coming from my overflow tank though, every now and then when i stop and shut the car off coolant comes out the overflow tank, not much, just a little.. i think i need a new radiator cap, not sure.. i check my coolant once a week, and its usually about 1qt. low, dont know if this is normal or not, wouldnt think its normal... i do know there is no coolant in my oil, no coolant/steam coming out the exhaust and no coolant smell out the exhaust, ive checked my plugs and they are clean..
Old Aug 27, 2010 | 05:17 AM
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The required diagram is the 93/94.

http://shbox.com/1/93-94_hoses.jpg

94/95 do not have the same connections... 93/94 route the steam pipe directly to the radiator. 95-97 route it to the throttle body.

For the originsl poster..... what does this mean:

ok so my 94 camaro is overheating like fast splashing water
Do you mean there is coolant bubbling out of the coolant reservoir?
Old Aug 27, 2010 | 12:34 PM
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Originally Posted by maroboiiZ28
ok so my 94 camaro is overheating like fast splashing water...has anyone had this before.....i changed temp sensore fans are working water pump good mmmmm what can it be and the thermestat is new ( if thats how u spell it) l0l helppp thank you
You can take it to a radiator shop and have them run a pressure test on it. They will check for leaks and be able to tell you if you have a blown head gasket or not. This is the rout I would take since you've already tried a few of the basics w/ no luck.
Old Aug 27, 2010 | 05:15 PM
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overheating

well im going to try bleeding the hoses, hopefully it gets fixed...thanks to everyone who took the time to look at my post
Old Aug 27, 2010 | 07:12 PM
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you know a kenneth guidry in port arthur?
Old Aug 27, 2010 | 07:18 PM
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Where is the temp sensor located on 95 lt1?
Old Aug 27, 2010 | 10:19 PM
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which one?

the sensor for the computer is on the front right on the waterpump.

for the temperature gauge, its on the driver side head,,
Old Aug 27, 2010 | 11:02 PM
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Shoebox has photos of numerous components on a 95 LT1:

http://shbox.com/1/temp_sensor1.jpg

http://shbox.com/1/temp_sensor2.jpg
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