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Overheating??!

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Old 05-01-2011, 10:27 AM
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jsanders88
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Default Overheating??!

I just recently replaced my thermostat in my 02. Did everything that the instructions said to do. Burped the system MULTIPLE times , but it still overheates. It didnt ever overheat before i tryed replacing my thermostat so obviously im not doing something right. Did i tighten the bolts on the housing too tight? . Is there Still air in the system?? i dont know whats up with it. Help
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Old 05-01-2011, 10:43 AM
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jsanders88
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You lost me on that last half haha.
Old 05-01-2011, 11:22 AM
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Alright , now when i got to tighten the bolts back up on the plate, is there a specific torque that is needed? And also , that 3/8" metal tube is the one bridging over the intake manifold correct?
Old 05-01-2011, 12:20 PM
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What temps are you running?
Old 05-01-2011, 12:31 PM
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Well its pegged out before, but now anytime i see it gettin over 240 or more i just turn it off so i dont mess my engine up any more
Old 05-01-2011, 01:58 PM
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Well I untightended the bolt on the left head and nothing happened , so i went and did the same to the right head, and nothing happened. I sat there for a couple minutes , no coolant came out at all. I had the pressure cap removed on the resevior and everything. Any ideas??
Old 05-01-2011, 02:32 PM
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i straight took the bolt completely off and out , the metal plate felt like it was attatched to the block, is that whole piece suppose to come off?
Old 05-01-2011, 07:22 PM
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Well , i did the process you suggested. I waited until coolant started to come out , and then i screwed the bolt back on. Still overheating... Im so frustrated right now, i have no idea whats wrong
Old 05-01-2011, 08:08 PM
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I didnt test the stat before i installed it. A few weeks ago it was running hot so i checked the coolant level. It was low so i filled it back up and ordered a new thermostat. It took a day or two to return to normal but the coolant add looked like it had pretty much done the job , but by that time i had already recieved the tstat so i just decided not to waste money and put it on anyway. There was a little bit of pine straw up in top corners when i looked but nothing real crazy, no bags, and there wasnt too much there, ive removed most of it. Both fans turn on at the proper temps so im pretty sure my fans are workin correctly. the tstat is a 160 deg.

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Old 05-01-2011, 08:24 PM
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Its a 2002 with 122K miles. When i changed it, the coolant color was the normal reddish, no discoloration or muddy brown-ness at all
Old 05-02-2011, 11:16 AM
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jdmvette
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Originally Posted by jsanders88
Well , i did the process you suggested. I waited until coolant started to come out , and then i screwed the bolt back on. Still overheating... Im so frustrated right now, i have no idea whats wrong
check that your driver side fan is not broken.
Old 05-02-2011, 05:29 PM
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Hey 8VETTE7 thanks man. I did what you said again this morning with the plates. I did both sides this time and the right one definitely had some air in it. I drove it to work this morning and it was fine. Never got above 207 even sitting at a very long light. Im still gonna keep an eye on it for the next couples days to be completely sure but i really appreciate the help. Thanks again.
Old 05-06-2011, 06:28 PM
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Default 8VETTE7 you are the man

Bleeding the front of the heads was the cure. I had to add almost a half gal to the res as the air was coming out. It took almost 2 minutes before fluid came out. Thanks
Old 05-29-2011, 08:29 PM
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Can you tell me what you did with the "plates" I'm having the same issue and I think I still have air in the system. One post said you took them off and nothing came out then after a pm was sent things worked out so I wanted to know what was the cure for this so I can give it a shot. My fans work, have a new thermo, tune so fans come on early. No crazy debris. SO I assume it's air in teh system thanks
Old 05-30-2011, 03:45 PM
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Alrighty I will give that a try this week thanks. I'm thinking that's my issue if not leak down time but I dought that is the problem.
Old 06-05-2011, 03:14 PM
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My temps came down alot!!!! I didn't get any coolant from the pasenger side I will try the driver side. DO you do it with the car running or off? I did it with the car running but all I got was some nice hot hissing but coolant is much better. I couldn't get her back to normal after the radiatior swap.
Old 06-05-2011, 06:02 PM
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Ok thanks I think this should be a sticky since the procedure to get the air out sucks. This worked very very well!!!

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Old 06-06-2011, 10:25 AM
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is this on the picture it? i took a picture since i have the same problem..




or is this one wrong?
Old 06-06-2011, 11:16 AM
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Originally Posted by 8VETTE7
Where is the plate located that is in this picture? Front of the block?

From the other items in the picture I'm thinking this is a picture of the back or the block???

The plates that I use to bleed the air are on the front of the block. Since my car has a Magna Charger installed I can't see anything on the back of the block.

If you go to post 12 in this thread there is a picture from the shop manul fro my 04 that shows the plates and tubes in the discussion.
i dont know wich is now front for you hehe
how ever.. this is in front of the car.. under the intake.. a bit lower is waterpump.. this small metal tube is connected to the other side, in the middle of this tube is a rubber hose connecting with it? is this it?

from looking your picture it looks pretty mutch the same ill go check, and i will try it out.
Old 06-06-2011, 06:21 PM
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Originally Posted by sccs
is this on the picture it? i took a picture since i have the same problem..




or is this one wrong?
Yes that is the correct one. I did the one on the passenger side and my temps came down alot. I need to do the driver side next.


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