Over heating issues, totally dumbfounded
Over heating issues, totally dumbfounded Hi guys, I have a 99 camaro z28 with 5.3 TT front mounted. I cannot figure out why its overheating, I usually never post on here until its the last draw. And its the last draw. 160* t-stat, fans come on at 176* (two 10in ebay fans, 850cfm each). Bleed the system multiple times.
Cold start it will idle and get to about 190* and never go over.... Until I start driving, then the temps will rise to about 210*. Sitting in traffic is the worst. It will rise to 220-225* and then SLOWLY go down to about to 215* driving but thats about it.
I still have the factory air dam on and turbo blankets. The only thing I can come up with is the lower rad hose is RIGHT above the passenger turbo. Please help, this issue has stopped me from driving it for about a month now.
Cold start it will idle and get to about 190* and never go over.... Until I start driving, then the temps will rise to about 210*. Sitting in traffic is the worst. It will rise to 220-225* and then SLOWLY go down to about to 215* driving but thats about it.
I still have the factory air dam on and turbo blankets. The only thing I can come up with is the lower rad hose is RIGHT above the passenger turbo. Please help, this issue has stopped me from driving it for about a month now.
What are you using for coolant crossover on the motor? If using a kit and the highest port of that kit is higher than your radiator cap you will have a hell of a time bleeding the car no matter how many times you have tried.
i always fill the block from the top hose, lets water get behind the thermostat
I gotta ask, are the fans wired correct, blowing inward-I have seen several times wired wrong
also do you have an A/A IC'er, blocking the radiator
the fans may just not be moving enough air
I gotta ask, are the fans wired correct, blowing inward-I have seen several times wired wrong
also do you have an A/A IC'er, blocking the radiator
the fans may just not be moving enough air
Hi guys, I have a 99 camaro z28 with 5.3 TT front mounted. I cannot figure out why its overheating, I usually never post on here until its the last draw. And its the last draw. 160* t-stat, fans come on at 176* (two 10in ebay fans, 850cfm each). Bleed the system multiple times.
Cold start it will idle and get to about 190* and never go over.... Until I start driving, then the temps will rise to about 210*. Sitting in traffic is the worst. It will rise to 220-225* and then SLOWLY go down to about to 215* driving but thats about it.
I still have the factory air dam on and turbo blankets. The only thing I can come up with is the lower rad hose is RIGHT above the passenger turbo. Please help, this issue has stopped me from driving it for about a month now.
Cold start it will idle and get to about 190* and never go over.... Until I start driving, then the temps will rise to about 210*. Sitting in traffic is the worst. It will rise to 220-225* and then SLOWLY go down to about to 215* driving but thats about it.
I still have the factory air dam on and turbo blankets. The only thing I can come up with is the lower rad hose is RIGHT above the passenger turbo. Please help, this issue has stopped me from driving it for about a month now.
Also, believe it or not....a 180 tstat will help more than a 160. More time for the coolant to cool off sitting in the radiator before it goes back into the engine/heads. Once those 160 tstats open and its above 190-200 that tstat will never fully close and the hot coolant just keeps moving and getting hotter and hotter........then its all over......
The tstat must be allowed to close......
But without the shroud in place like it was from the factory....you will never run proper temps.
Also.....aren't the factory fans 1,200 cfm each.....? Not sure but I thought so.....
......also....make sure BOTH fans are coming on together.......in both low and high settings. They always run together.....
.
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i always fill the block from the top hose, lets water get behind the thermostat
I gotta ask, are the fans wired correct, blowing inward-I have seen several times wired wrong
also do you have an A/A IC'er, blocking the radiator
the fans may just not be moving enough air
I gotta ask, are the fans wired correct, blowing inward-I have seen several times wired wrong
also do you have an A/A IC'er, blocking the radiator
the fans may just not be moving enough air
Did you remove the factory shroud....? is it still sealed to the front of the condensor just like it was from the factory...?
Also, believe it or not....a 180 tstat will help more than a 160. More time for the coolant to cool off sitting in the radiator before it goes back into the engine/heads. Once those 160 tstats open and its above 190-200 that tstat will never fully close and the hot coolant just keeps moving and getting hotter and hotter........then its all over......
The tstat must be allowed to close......
But without the shroud in place like it was from the factory....you will never run proper temps.
Also.....aren't the factory fans 1,200 cfm each.....? Not sure but I thought so.....
......also....make sure BOTH fans are coming on together.......in both low and high settings. They always run together.....
.
Also, believe it or not....a 180 tstat will help more than a 160. More time for the coolant to cool off sitting in the radiator before it goes back into the engine/heads. Once those 160 tstats open and its above 190-200 that tstat will never fully close and the hot coolant just keeps moving and getting hotter and hotter........then its all over......
The tstat must be allowed to close......
But without the shroud in place like it was from the factory....you will never run proper temps.
Also.....aren't the factory fans 1,200 cfm each.....? Not sure but I thought so.....
......also....make sure BOTH fans are coming on together.......in both low and high settings. They always run together.....
.
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On The Tree
Joined: Feb 2014
Posts: 102
Likes: 0
Check your timing and AFR. The link below is for carb. engine but the principles are the same:
http://www.hotrodders.com/forum/timi...ng-160577.html
http://www.hotrodders.com/forum/timi...ng-160577.html
Did you remove the factory shroud....? is it still sealed to the front of the condensor just like it was from the factory...? Also, believe it or not....a 180 tstat will help more than a 160. More time for the coolant to cool off sitting in the radiator before it goes back into the engine/heads. Once those 160 tstats open and its above 190-200 that tstat will never fully close and the hot coolant just keeps moving and getting hotter and hotter........then its all over...... The tstat must be allowed to close...... But without the shroud in place like it was from the factory....you will never run proper temps. Also.....aren't the factory fans 1,200 cfm each.....? Not sure but I thought so..... ......also....make sure BOTH fans are coming on together.......in both low and high settings. They always run together..... .
OP your 160 thermostat is fine
On The Tree
Joined: May 2012
Posts: 175
Likes: 0
If you are running an automatic trans keep your trans cooler off the rad, my car never got hot but when I put a large plate style trans cooler in front of the radiator (touching it with those plastic things that connect through the rad) I started getting hot while driving. Relocated to somewhere else on the core support and its staying cool now. It's also an unlocked th400 with 3500 stall and 3.23 gear so it makes some heat.
Teching In
Joined: Feb 2009
Posts: 48
Likes: 0
From: Western Australia
dont bother chasing anything else until you put some big powerful fans on there. i have been through this. use two of these:
http://www.summitracing.com/parts/der-16925
MAKE them fit
http://www.summitracing.com/parts/der-16925
MAKE them fit
dont bother chasing anything else until you put some big powerful fans on there. i have been through this. use two of these:
http://www.summitracing.com/parts/der-16925
MAKE them fit
http://www.summitracing.com/parts/der-16925
MAKE them fit