New cooling fans , will not run.

[Steve Tinker]

Kashmir..
If the Durametric is switching the fans on, then (as far as I know) this proves the DME circuitry is functional. Do the fans come on (low speed) when you switch on the A/C ? Also the ballast resistors mounted under the front spoiler could be faulty.
My coolant does have to get really hot before the high speed fans switch on - even in heavy traffic they rarely come on when the A/C is running.

[kashmir]

Maybe it is not hot enough, will play with it tomorrow.

[Bryan topping]

+1
If Durametric is switching the fans on/off on both low & high speeds you should be good to go.

[thom4782]

There is an easy test you can perform which doesn't depend on coolant temperature. A couple of others have already mentioned it indirectly.

Start the car (important) and switch on the AC. If the fans are functioning properly (and the Durametric suggests that they are), the fans will run in low speed regardless of the coolant temperature.