EWP Constant Running
03-01-2017, 08:53 AM
#1
EWP Constant Running
Hi Guys
How would I be able to get an ewp to run all the time for the charge coolers , a switched live only when ignition is on and car running
can it be done with the old pump relay set up , but doesn't that only come on via a sensor? when at a certain temp.
Car at is a 2003 cl600
any thoughts and ideas
stuart
How would I be able to get an ewp to run all the time for the charge coolers , a switched live only when ignition is on and car running
can it be done with the old pump relay set up , but doesn't that only come on via a sensor? when at a certain temp.
Car at is a 2003 cl600
any thoughts and ideas
stuart
03-02-2017, 07:51 PM
#2
Junior Member
Remove the relay for the IC pump. This is located in the passenger side of the engine compartment in the small fuse/relay box that is mounted right next to the large fuse box. It is relay "W" which is located in the middle of the box. Install a fused jumper between socket #30 and #87. Power to the pump will be on constantly with key on.
03-14-2017, 09:23 PM
#4
MBWorld Fanatic!
https://mbworld.org/forums/cl-class-...always-dy.html
Can't just jumper it as those terminals have circuit 30 power (always on) so the pump runs even with the key out. Do as this guy did, I just did something similar, if you wire the relay trigger to a normally switched on circuit (I used a fuse in that same box, not where he went), it will activate the pump always when the key is on as you want. Mine is like that now and working just fine.
Can't just jumper it as those terminals have circuit 30 power (always on) so the pump runs even with the key out. Do as this guy did, I just did something similar, if you wire the relay trigger to a normally switched on circuit (I used a fuse in that same box, not where he went), it will activate the pump always when the key is on as you want. Mine is like that now and working just fine.
