Vauxhall Asra 1.4, V reg (99) X14XE engine, with air con, it is a courtesy car for a garage, customer took it and put it into the back of another car, the garage purchased it back from the insurance company and repaired themselves without puting new air con parts in, they left out the condensor and fan, reciever/drier and pipe work to the compressor, as the A/C is controlled by an ECU the warning lamp was on and the cooling fan runs all the time the engine is running, I went to look at the car to sort out the warning lamp and fan running faults and found that the system needed to have a condensor fan pluged in and a system pressure sensor, these were purchased and fitted, as there is no pipework the pressure sensor just sits in the engine bay at atmospheric presure, now that these parts have been put on I can erase any fault codes and make the warning lamp go out but the cooling fan and condensor fan still run at full speed all the time, I have tried swapping the ECU with an identical one and get the same fault, the engine coolant temperature sensor is also new.

What am i missing? does the pressure sensor need to see some sort of pressure to turn off the fans? if so can i put some resistors accross the terminals in the plug?

Help..... please......

Dave.

The easiest option is to restore the AC system to it's original spec. You're already half way there, why not continue?

Chuck


To help and to serve

The owner does not want to spend any more money on the car so we are just looking for a quick fix to stop the fans from running all the time.

Have took air con off cars in the past and its never made the fans run ........................perhaps its an engine temp sensor or the wiring for it or the engine ECU at fault and not the aircon

It could be a fault in the engine ECU or damaged wiring to it from the coolant sensor

Or it could be a nipped wire near the cooling ecu from the smash ...................sounds like a nightmare

"the fans were not running before the crash and i was told that the a/c system didnt work pre crash either (no gas)... "

You are really throwing wobblies at us here mate!

I must admit to having no idea as to how to make the system operational if some of the critical components are missing.

My only input on this is to restore everything to the normal working condition and then take it from there.

Chuck

 


To help and to serve

Would be nice to know what you are using to read this I can get live data for the Fan module, can you.

Kev.

"If you dont KNOW how it works, don,t try to test or fix it"