Hi guys, just wanted to give everyone a heads up who run the VMP dual fan heat exchanger. Ive had my heat exchanger (purchased new from VMP) since Spring 2015. Fan unit and harness assembly has about 17k miles on them.
About a week ago, i noticed my fans were staying on longer than normal after engine shutoff. After about 5 seconds, the fans would kick off. Progressively got worse as the week went on. Funny thing, the fans would kick off as soon as i popped my hood. Im like wtf?
Eventually even popping the hood had the fans stay on. So, with the fan running i started the car. I verified the IC pump was turning on AND turning off normally when the car was turned off. Via the custom VMP harness, the fans are triggered from the IC pump running.
After i found the pump running normally, i decided to pull the fuses to save my battery. Pulled the first fuse, no change in fan sound. I knew that 1 fan circuit was operating normally. Pulling the second fuse, the malfunctioming fan kicked off.
My theory is the integrated fan relays in the VMP harness are malfunctioning. The relay contact spring is probably weak. The contact is staying engaged instead of opening the circuit up when the relay coil is de-energised.
I have a tech help ticket open with VMP via email. Soon as i know something ill report back.
About a week ago, i noticed my fans were staying on longer than normal after engine shutoff. After about 5 seconds, the fans would kick off. Progressively got worse as the week went on. Funny thing, the fans would kick off as soon as i popped my hood. Im like wtf?
Eventually even popping the hood had the fans stay on. So, with the fan running i started the car. I verified the IC pump was turning on AND turning off normally when the car was turned off. Via the custom VMP harness, the fans are triggered from the IC pump running.
After i found the pump running normally, i decided to pull the fuses to save my battery. Pulled the first fuse, no change in fan sound. I knew that 1 fan circuit was operating normally. Pulling the second fuse, the malfunctioming fan kicked off.
My theory is the integrated fan relays in the VMP harness are malfunctioning. The relay contact spring is probably weak. The contact is staying engaged instead of opening the circuit up when the relay coil is de-energised.
I have a tech help ticket open with VMP via email. Soon as i know something ill report back.