Please Help Me

You may need to get a air deflector. My car ran hot while on the freeway but would cool down while in town, Yeah I know kinda ass backwards like your car is doing. Since I put the air deflector back on I have had no overheating issues, even in the 118 degree + weather.
 
Thank God For Tax Season! Im Probably Gonna Dunp My Shole Return In This Problem, Just Gettin Ready For That Bullsh&&.
 
Two questions...

First, have you properly "burped" the system at the cross-over tube? You've done a lot to the cooling system that could allow an air pocket into the system.

Second, have you verified that the high-speed fan is running?

I had a similar problem with one of my 93's. It would overheat at road speed, then cool down fine at idle.

It turned out that the VCRM went bad. The VCRM controls the high-speed fan. The fan wouldn't come on, and the car would overheat while driving.

With the car idling, turn on the air conditioning to MAX AC. The fan should start up immediately. If it doesn't, then you've got an issue with either your fan or with the VCRM.

The coolant leak is a problem, but it may not be THE problem.
 
unity said:
Unfortunately yes. The entire MN12 platform was built for a V6 - fuel economy in mind. But competition for Cadillac and such forced for to play the modular card and the "all new" 4.6L made it in almost at the last minute.

This is why working on it can be rather difficult. The heater core, oil filter, throttle body, etc.... Also the reason for the tight clearances everywhere else.

Needless to say, I would rather have to "put up" with a V8 shoed in there than a V6.
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I would say the mn12 was made for the six but the fn10 was the test bed for the 4.6 dohc
 
I thought the Town Car was the 'test bed' for the 4.6 DOHC.
 
Actually the Mark IS an FN10 platform, which is a variant of the MN12. Since they are so close, a lot of people refer to the FN10 as an MN12.
 
Not what i meant. Before the Mark VIII came along, i read somewhere that the DOHC was fitted to a bunch of Town Cars for pre - production testing.
 
I have heard of a few different panthers getting the DOHC motor. The only one that made it to production though was the Marauder.
 
Vcrm?

It turned out that the VCRM went bad. The VCRM controls the high-speed fan. The fan wouldn't come on, and the car would overheat while driving.

With the car idling, turn on the air conditioning to MAX AC. The fan should start up immediately. If it doesn't, then you've got an issue with either your fan or with the VCRM.

WHAT DOES VCRM STAND FOR? AND WHERE MIGHT IT BE SO I CAN FIND IT TO REPLACE IF NECESSARY?
 
SPECTRE2147 said:
WHAT DOES VCRM STAND FOR? AND WHERE MIGHT IT BE SO I CAN FIND IT TO REPLACE IF NECESSARY?
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I believe VCRM stands for Variable Control Relay Module. On a 93, it's located in front of the radiator, down towards the bottom. It's got fins for cooling and a pretty large electrical connector attached to it.

I got mine from Jamie, via eBay.
 
A new one is apparently hard to come by. There was a new article about older cars and how a Mark VIII owner no longer had a usable car because the VCRM went bad and no one had one. Apparently he never heard of a salvage yard and apparently is was news worthy! lol
 
unity said:
A new one is apparently hard to come by. There was a new article about older cars and how a Mark VIII owner no longer had a usable car because the VCRM went bad and no one had one. Apparently he never heard of a salvage yard and apparently is was news worthy! lol
Click to expand...

Or possibly the idea that you could put a temp controlled relay going straight to the fan....
 
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