29-04-2015, 09:10 AM
(This post was last modified: 29-04-2015, 09:28 AM by pug306driver.)
this has appeared on here before before and I made a note about it, but just to be sure........
as above , remove a/c sensor connection by the o/s headlamp and bridge 1 and 3 for hi speed fan to come on when a/c sw pressed ( green light comes on? )?? and bridge 1 and 2 for low speed fan to come on when a/c sw pressed ( and green light comes on.)..??
disconnect the wires going to the a/c pump ( magnetic clutch? ).
are there any other wires to disconnect??
does the ecu make eng use more fuel when a/c is switched on??
or is it the a/c pump working that makes the engine use more fuel when the a/c is on ( more load so more fuel ) ?
now I have the courage to check this weekend, and I have only found one round terminal connector to the fans, which is below the air hose and by the rad on the cars l/h/s........I will be checking that terminal block for verdigree ( green corrosion ) and also removing the front grill and relay covers, by the fans.........just to be sure, and tick another maintenance item off the list.
I presume that if the coolant temp sensor fails, then the fail safe is now redundant?? ie overheat for any reason and the fans come on automatically.........temp sensor system fails and fans come on automatically??
with the manual mod ( a/c switch ) , the fails safe is now redundant??
ps I have edited the post to make it more easy to read and unambiguouse, hopefully
as above , remove a/c sensor connection by the o/s headlamp and bridge 1 and 3 for hi speed fan to come on when a/c sw pressed ( green light comes on? )?? and bridge 1 and 2 for low speed fan to come on when a/c sw pressed ( and green light comes on.)..??
disconnect the wires going to the a/c pump ( magnetic clutch? ).
are there any other wires to disconnect??
does the ecu make eng use more fuel when a/c is switched on??
or is it the a/c pump working that makes the engine use more fuel when the a/c is on ( more load so more fuel ) ?
now I have the courage to check this weekend, and I have only found one round terminal connector to the fans, which is below the air hose and by the rad on the cars l/h/s........I will be checking that terminal block for verdigree ( green corrosion ) and also removing the front grill and relay covers, by the fans.........just to be sure, and tick another maintenance item off the list.
I presume that if the coolant temp sensor fails, then the fail safe is now redundant?? ie overheat for any reason and the fans come on automatically.........temp sensor system fails and fans come on automatically??
with the manual mod ( a/c switch ) , the fails safe is now redundant??
ps I have edited the post to make it more easy to read and unambiguouse, hopefully