Over heating
Thread Starter
Staging Lane
Joined: Aug 2013
Posts: 77
Likes: 0
From: Va
Over heating I have an '02 Z28 I installed a procharger over the winter, since getting the car back from the tuners it keeps over heating. I thought I had a blown head gasket so I installed LS9 head gaskets, no change. So I changed the water pump and thermostat, no change. So the last thing was the radiator so I installed an LT1 radiator with no luck. I let the car sit and idle with the cap off and heat in high for 20-30 min to make sure there is no air in the system and no over heating, put he cap in and drive it less than 10 min and it over heats.what else is there to do? I need help!!
Thanks
Thanks
When it quickly overheats, is it rapidly blowing water into the overflow tank? And what is the temp when it does that?
Was it overheating on the dyno?
There are a few things that will cause an engine to overheat. Sounds like you've already addressed the cooling system pretty well.
As a last step, I would do do a simple test. Go down to Autozone (or wherever) and borrow a test kit for free. Go through the basic test procedure and make sure it passes. Randomly replacing parts without any testing sometimes misses important problems.
Second, take a close look at your new tune. Incorrect ignition timing or a lean mixture will also cause rapid overheating.
Your comment about the fan doesn't make sense. You can feel it pulling air in. But you can also feel it blow on your feet? Does the Procharger have an air:air or air:water intercooler? Where is it placed? After about 40mph or so, the fan doesn't matter any more. So if it's not overheating at idle, but is while cruising down the highway, the fan is not the issue.
Was it overheating on the dyno?
There are a few things that will cause an engine to overheat. Sounds like you've already addressed the cooling system pretty well.
As a last step, I would do do a simple test. Go down to Autozone (or wherever) and borrow a test kit for free. Go through the basic test procedure and make sure it passes. Randomly replacing parts without any testing sometimes misses important problems.
Second, take a close look at your new tune. Incorrect ignition timing or a lean mixture will also cause rapid overheating.
Your comment about the fan doesn't make sense. You can feel it pulling air in. But you can also feel it blow on your feet? Does the Procharger have an air:air or air:water intercooler? Where is it placed? After about 40mph or so, the fan doesn't matter any more. So if it's not overheating at idle, but is while cruising down the highway, the fan is not the issue.
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Thread Starter
Staging Lane
Joined: Aug 2013
Posts: 77
Likes: 0
From: Va
It did not overheat on the dyno at all. After I picked the car up from the tuner I drove it about 20-25 min and that's when it started overheating. The first time it overheated it was pushing water out of the overflow tank is why I thought head gasket. but I was also able to drive it another 30-45 min on home over 2 mountains without anymore overheating that day. Now when it overheats I can just hear it gurgling in the radiator when I get home and raise the hood.
When you say get a test kit and do a basic test. Exactly what do you mean? (sorry new to cooling issues)
As far as the supercharger placement it is on the bottom front driver side of the motor and I have twin intercoolers.
As for the fans when I was under the car I could put my hand between the fan and the motor and I could feel air not very strong but could feel air, but also when standing in front of the car I can feel it blowing out from the car and it feels much stronger than what I feel inside the engine bay.
When you say get a test kit and do a basic test. Exactly what do you mean? (sorry new to cooling issues)
As far as the supercharger placement it is on the bottom front driver side of the motor and I have twin intercoolers.
As for the fans when I was under the car I could put my hand between the fan and the motor and I could feel air not very strong but could feel air, but also when standing in front of the car I can feel it blowing out from the car and it feels much stronger than what I feel inside the engine bay.
When it quickly overheats, is it rapidly blowing water into the overflow tank? And what is the temp when it does that?
Was it overheating on the dyno?
There are a few things that will cause an engine to overheat. Sounds like you've already addressed the cooling system pretty well.
As a last step, I would do do a simple test. Go down to Autozone (or wherever) and borrow a test kit for free. Go through the basic test procedure and make sure it passes. Randomly replacing parts without any testing sometimes misses important problems.
Second, take a close look at your new tune. Incorrect ignition timing or a lean mixture will also cause rapid overheating.
Your comment about the fan doesn't make sense. You can feel it pulling air in. But you can also feel it blow on your feet? Does the Procharger have an air:air or air:water intercooler? Where is it placed? After about 40mph or so, the fan doesn't matter any more. So if it's not overheating at idle, but is while cruising down the highway, the fan is not the issue.
Was it overheating on the dyno?
There are a few things that will cause an engine to overheat. Sounds like you've already addressed the cooling system pretty well.
As a last step, I would do do a simple test. Go down to Autozone (or wherever) and borrow a test kit for free. Go through the basic test procedure and make sure it passes. Randomly replacing parts without any testing sometimes misses important problems.
Second, take a close look at your new tune. Incorrect ignition timing or a lean mixture will also cause rapid overheating.
Your comment about the fan doesn't make sense. You can feel it pulling air in. But you can also feel it blow on your feet? Does the Procharger have an air:air or air:water intercooler? Where is it placed? After about 40mph or so, the fan doesn't matter any more. So if it's not overheating at idle, but is while cruising down the highway, the fan is not the issue.
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As for the fans when I was under the car I could put my hand between the fan and the motor and I could feel air not very strong but could feel air, but also when standing in front of the car I can feel it blowing out from the car and it feels much stronger than what I feel inside the engine bay.
As for the fans when I was under the car I could put my hand between the fan and the motor and I could feel air not very strong but could feel air, but also when standing in front of the car I can feel it blowing out from the car and it feels much stronger than what I feel inside the engine bay.
Thread Starter
Staging Lane
Joined: Aug 2013
Posts: 77
Likes: 0
From: Va
I only have the 1 16 inch fan and I wired the fan myself and I wired it up exactly like the procharger instruction manual said to. This may be a stupid newb question but should I remove the black plastic that is in front of the car between the radiator and nose of the car? I only feel the air in front of the car when the fan kicks on not all the time. Should I try to switch the wires going to the fan and see if that helps?
I only have the 1 16 inch fan and I wired the fan myself and I wired it up exactly like the procharger instruction manual said to. This may be a stupid newb question but should I remove the black plastic that is in front of the car between the radiator and nose of the car? I only feel the air in front of the car when the fan kicks on not all the time. Should I try to switch the wires going to the fan and see if that helps?
Edit. That being said I'll be shocked if you end up staying cool with 1 fan only even if it's wired backwards and you fix it.
Tire Smoking Tranny Blowing Director
iTrader: (2)
Joined: Nov 2001
Posts: 2,130
Likes: 1
From: Barto PA
Ya if it's the stock fan setup from procharger that might be why it's overheating. Most have made custom shrouds with a more cfm 16inch and put a smaller one above where the super charger is. Think it's a 9inch.
That's what I have on mine. Also make sure the shroud is sealed to the rad or it will pull just from the sides and not through the rad.
Also spal fans are awesome.
That's what I have on mine. Also make sure the shroud is sealed to the rad or it will pull just from the sides and not through the rad.
Also spal fans are awesome.
Fan Blade Direction HI ALL, A SIMPLE test method was stated, NOT observed.
The FAN Blade has direction, it is designed to "cup" the air in the direction of rotation.
I have a CFM meter I use for air flow measurement.
The "dyno" tip may have been the answer, my thought, the car is stationary. (radiator)
Lance
The FAN Blade has direction, it is designed to "cup" the air in the direction of rotation.
I have a CFM meter I use for air flow measurement.
The "dyno" tip may have been the answer, my thought, the car is stationary. (radiator)
Lance
HI ALL, A SIMPLE test method was stated, NOT observed.
The FAN Blade has direction, it is designed to "cup" the air in the direction of rotation.
I have a CFM meter I use for air flow measurement.
The "dyno" tip may have been the answer, my thought, the car is stationary. (radiator)
Lance
The FAN Blade has direction, it is designed to "cup" the air in the direction of rotation.
I have a CFM meter I use for air flow measurement.
The "dyno" tip may have been the answer, my thought, the car is stationary. (radiator)
Lance
The test kit looks like this: http://www.autozone.com/test-scan-an...kit/391374_0_0
At my local Autozone, you give them $80, and they give you the test kit, complete with instructions. When you're done, you bring the test kit back and they give you the $80 back. It's a good deal.
The test procedure is pretty simple, and takes about an hour or so if you've never done it before. It will help you find the problem pretty quickly. http://www.stant.com/files/5914/0979...stallation.pdf
Don't worry about your fan for now. Everyone's focused on that, but it's really not that important. Remember that when the fan is working correctly it moves air at about 40-45mph; a stock fan moves even less air than that. If you're moving faster than that, you're moving more air through the radiator and intercooler than your fan ever will. I have my fan programmed to shut off at higher speeds.
Don't worry about your fan for now. Everyone's focused on that, but it's really not that important. Remember that when the fan is working correctly it moves air at about 40-45mph; a stock fan moves even less air than that. If you're moving faster than that, you're moving more air through the radiator and intercooler than your fan ever will. I have my fan programmed to shut off at higher speeds.