Overheating after mods
Le Mans Master
Joined: Feb 1999
Posts: 6,269
Likes: 1
From: Richmond Ca
Re: Overheating -check fuel/spark (MXRACER)
wwashing look in FI and search on lowered Radiator.
Race Director
Joined: Mar 2000
Posts: 17,602
Likes: 20
From: Palm City Florida
Re: Overheating after mods (MXRACER)
This is the craziest thought...But..Was the radiator open to the air during the mods?...
You may have attracted a wasp or some other type of insect who used your radiator cavern to build a nest..
Here in Florida I can't leave any small pieces of hose on the shelf.. They always get a damn mud wasp nest.. :cuss
I'd pull the radiator and flush it good first... You may be surprised by what comes out.. ;)
Who knows...maybe a mouse or rat crawled in there..Drank the coolant...Died.. The rest is history.. :lolg:
[Modified by chuckster, 10:34 PM 7/21/2003]
You may have attracted a wasp or some other type of insect who used your radiator cavern to build a nest..
Here in Florida I can't leave any small pieces of hose on the shelf.. They always get a damn mud wasp nest.. :cuss
I'd pull the radiator and flush it good first... You may be surprised by what comes out.. ;)
Who knows...maybe a mouse or rat crawled in there..Drank the coolant...Died.. The rest is history.. :lolg:
[Modified by chuckster, 10:34 PM 7/21/2003]
Melting Slicks
Joined: Jun 2003
Posts: 2,951
Likes: 2
From: D/FW TX
St. Jude Donor '07-'09
Re: Overheating after mods (MXRACER)
This may sound dumb. It isn't the thermostat because you removed and still got a very quick overheat. Someone suggested the water pump. Once the car has cooled you might try starting the car, removing the radiator cap and see if you notice the fluid moving. It moves fairly slow, but moves nonetheless. This would tell you that the water pump is moving water. May not eliminate a blockage in some area though. Someone suggested making sure the fan is turning in the right direction and/or that the belt is installed correctly. I haven't looked to see if that can be done on this car, but I know you can on certain cars, so that idea is worth the thought just to make sure. Otherwise, if the car didn't overheat before, backtrack on the mods you did. Just my .02 worth.
Team Owner
Joined: Mar 1999
Posts: 28,753
Likes: 9
From: San Jose/Bear Valley CA
CA Events Coordinator
Re: Overheating after mods (MXRACER)
is your cooling fan spinning the correct way? You know I had the same problem using the ATI fan system... and If I remember correctly the fan that comes with the Cerra system looks exactly like the ATI setup. Are you sure that the fan is going into high speed? Or are you using the stock fans with your lowered rad setup?
With that POS ATI fan setup... my car ran the same way until I changed back to the factory fans... :yesnod:
vetterdstr :cheers:
With that POS ATI fan setup... my car ran the same way until I changed back to the factory fans... :yesnod:
vetterdstr :cheers:
Thread Starter
Racer
Joined: Oct 2002
Posts: 296
Likes: 0
Re: Overheating after mods (MXRACER)
Here are the results of the bleed and refill:
Procedure used:
1) I raised the front of the car.
2) I pulled the top radiator hose.
3) I pulled the small bleed hose to the radiator and pointed it up. This raised the top of the hose about 3”.
4) I plugged the radiator outlet.
5) I filled the block from the top radiator hose holding it up higher than the bleed hose. When I saw coolant coming out of the bleed hose I reconnected it to the hose going to the radiator. This should have removed all of the air from the block.
6) I reconnected the top radiator hose.
7) I refilled the surge tank.
Results:
I took it for a test drive with a couple of short 3rd gear hard runs. The highest temp I saw was 242F. It was around 215F to 220F at Idle. This is still high but way better than 270F. I think the new surge tank may possibly be the problem for the higher temps I am seeing now.
So it looks like I had an air bubble in the block.
Now off to other problems, looks like I may have an oil leak I have to run down. It happens during boost only, I get white smoke. Waiting for the thing to cool down before I embark upon that one.
:(
[Modified by MXRACER, 9:24 AM 7/25/2003]
Procedure used:
1) I raised the front of the car.
2) I pulled the top radiator hose.
3) I pulled the small bleed hose to the radiator and pointed it up. This raised the top of the hose about 3”.
4) I plugged the radiator outlet.
5) I filled the block from the top radiator hose holding it up higher than the bleed hose. When I saw coolant coming out of the bleed hose I reconnected it to the hose going to the radiator. This should have removed all of the air from the block.
6) I reconnected the top radiator hose.
7) I refilled the surge tank.
Results:
I took it for a test drive with a couple of short 3rd gear hard runs. The highest temp I saw was 242F. It was around 215F to 220F at Idle. This is still high but way better than 270F. I think the new surge tank may possibly be the problem for the higher temps I am seeing now.
So it looks like I had an air bubble in the block.
Now off to other problems, looks like I may have an oil leak I have to run down. It happens during boost only, I get white smoke. Waiting for the thing to cool down before I embark upon that one.
:(
[Modified by MXRACER, 9:24 AM 7/25/2003]
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Michael S. Palmer
Race Director
Joined: Mar 2000
Posts: 17,602
Likes: 20
From: Palm City Florida
Re: Overheating after mods (MXRACER)
Here are the results of the bleed and refill:
Procedure used:
1) I raised the front of the car.
2) I pulled the top radiator hose.
3) I pulled the small bleed hose to the radiator and pointed it up. This raised the top of the hose about 3”.
4) I plugged the radiator outlet.
5) I filled the block from the top radiator hose holding it up higher than the bleed hose. When I saw coolant coming out of the bleed hose I reconnected it to the hose going to the radiator. This should have removed all of the air from the block.
6) I reconnected the top radiator hose.
7) I refilled the surge tank.
Results:
I took it for a test drive with a couple of short 3rd gear hard runs. The highest temp I saw was 242F. It was around 215F to 220F at Idle. This is still high but way better than 275F. I think the new surge tank may possibly be the problem for the higher temps I am seeing now.
So it looks like I had an air bubble in the block.
Now off to other problems, looks like I may have an oil leak I have to run down. It happens during boost only, I get white smoke. Waiting for the thing to cool down before I embark upon that one.
:(
Procedure used:
1) I raised the front of the car.
2) I pulled the top radiator hose.
3) I pulled the small bleed hose to the radiator and pointed it up. This raised the top of the hose about 3”.
4) I plugged the radiator outlet.
5) I filled the block from the top radiator hose holding it up higher than the bleed hose. When I saw coolant coming out of the bleed hose I reconnected it to the hose going to the radiator. This should have removed all of the air from the block.
6) I reconnected the top radiator hose.
7) I refilled the surge tank.
Results:
I took it for a test drive with a couple of short 3rd gear hard runs. The highest temp I saw was 242F. It was around 215F to 220F at Idle. This is still high but way better than 275F. I think the new surge tank may possibly be the problem for the higher temps I am seeing now.
So it looks like I had an air bubble in the block.
Now off to other problems, looks like I may have an oil leak I have to run down. It happens during boost only, I get white smoke. Waiting for the thing to cool down before I embark upon that one.
:(
:D
Le Mans Master
Joined: Jul 2002
Posts: 7,370
Likes: 8
From: Slave to the evil empire
Cruise-In V Veteran
St. Jude Donor '04
Re: Overheating after mods (MXRACER)
Ok, I am now thoroughly tired of this overheating problem. I took the TStat out and took it on a test drive.
Install a 160 degree thermostat and make sure your fans are operating the way they are supposed to :cheers:
Thread Starter
Racer
Joined: Oct 2002
Posts: 296
Likes: 0
Re: Overheating after mods (runamuk)
Ok, I am now thoroughly tired of this overheating problem. I took the TStat out and took it on a test drive.
Did you replace the thermostat or install anything, if not this is why your overheating now. You need the thermostat installed in the engine in order for the coolant to remain in the radiator long enough to cool down, if you pull the thermostat the coolant just starts circulating nonstop through the hot engine and never gets to cool down.
Install a 160 degree thermostat and make sure your fans are operating the way they are supposed to :cheers:
Did you replace the thermostat or install anything, if not this is why your overheating now. You need the thermostat installed in the engine in order for the coolant to remain in the radiator long enough to cool down, if you pull the thermostat the coolant just starts circulating nonstop through the hot engine and never gets to cool down.
Install a 160 degree thermostat and make sure your fans are operating the way they are supposed to :cheers:
