Question?

[jeromeda]

My MM seems to over heat, only when I turn the AC on. It was recommended that I get a new radiator and fan. I would like to know has anyone else had this problem, and if so, is there a cheaper fix than buying the items mentions?

[sailsmen]

What are your mods and is your fan turning on?

[fastblackmerc]

Have you burped the system?

[Mr. Man]

You may have trapped air in the system. Like ^^^^ said try burping the system at the cross over pipe first to see if trapped air is the issue. Could also be a slow or partially stuck T-stat. I would investigate these two issues first before committing to a new radiator.

[1stMerc]

What they said. Have yet to see a thread about anybody replacing a radiator do to failure. Not saying it couldn't happen, just about everything has been covered throughout the history of this site.

[jeromeda]

The mods I have are a forged engine purchased from board bro NTD. Kooks headers, new exhaust, and tune from Lidio. All work was done at Alternative Automotive, and burping of the system was done also.

[sailsmen]

Does it have a S/C if so which one?

[jeromeda]

No S/C at this time

[sailsmen]

Does it have the stock radiator fan shroud?

Is this the car you bought
http://www.mercurymarauder.net/forums/showthread.php?t=75254&highlight=ntd

[jeromeda]

Yeah those 2 things are stock. But just about everything else under the hood is new. Told him to replace anything that looks like a probkem. The fan still runs well with no problem. It just when I turn on that A/C

[jeromeda]

No, I've owned my DTR since 04, bought it brand new. But I purchased a engine from him which was listed on this board

[sailsmen]

The a/c works by removing heat and that heat unfortuantely is put on the radiator. When you start your car with the a/c on check under the hood and see if the fan is on, it should be on when ever the a/c is on.
If the fan is on the next thing is as stated above, air in the system. Was the coolant changed prior to the high temp condition?

[jeromeda]

Overheating cause the failure of the stock engine, I think. (popped a head), so going into shop, the problem was already there I guess. But the fan worked just fine once out of the shop. And I don't know if coolants were changed, but everything under the hood was changed just about so I can't see why not

[SC Cheesehead]

The a/c works by removing heat and that heat unfortuantely is put on the radiator. When you start your car with the a/c on check under the hood and see if the fan is on, it should be on when ever the a/c is on.
If the fan is on the next thing is as stated above, air in the system. Was the coolant changed prior to the high temp condition?


^^^^^ What he said. Air in the system can be a pesky problem. Read through the info in the link, follow the procedure, and that may solve your problems.

http://reischeperformance.com/refill.html

[sailsmen]

This statement is meaningless - ".... everything under the hood was changed just about so I can't see why not.."
The more details you give us the more we can help you.