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Can one of you Heartbeat guys check your intercooler relay and tell me if at idle it is pulsing on and off?
I thought it was a rocker till I put my hand on the relay. Being mounted to the fender panel it is crazy loud and seems like the failure rate would be sky high.
Thanks Steve
Can one of you Heartbeat guys check your intercooler relay and tell me if at idle it is pulsing on and off?
I thought it was a rocker till I put my hand on the relay. Being mounted to the fender panel it is crazy loud and seems like the failure rate would be sky high.
Thanks Steve
All those Heartbeat guys sleep during the day.....If the ignition is on, your pump should be running. No pulsing on and off.
Until someone smart chimes in, I can tell you that my pump runs continuously. It never switches on/off. I cannot "hear" the relay. I recently upgraded to the Stewart EMP IC pump, and it's pretty loud. It runs continuously. I've never heard it switching, ever.
I would have thought the same thing that it ran when the ignition was on. I have a email into Magnuson (only support they offer)
Don't know what would have changed. The relay on is a yellow wire from their harness.
And for the record, I start every day at 2am. Maybe that is the problem.
If you are worried about whether or not the intercooler pump is running when it should, do the following.
With your FOB in the car, push the lower part of the start button for at least 5 seconds. It won't just go into the normal accessory mode (it will go into the 'run' mode)
The pump should be running ... You can hear it very clearly in the front of the car.
With just the ignition on the pump runs normal and the relay is on. Once I start it the relay pulses and the voltage on the incoming yellow wire is pulsing which is what is causing it.
If I don't get a real answer for Magnuson, I'm going to just find a hot circuit and dump the yellow wire.
Thanks for the help.
Yes, it is a pulsed signal. So until Magnuson returns my support email, I'm tracing down where they are picking up that signal.
PS, with just ignition on, it is a solid 12v, once you start it at idle it is about a 50% duty cycle voltage.
I'm at work and my service manuals are at home. Can anyone look up the Evap Valve wiring diagram and tell me where it goes? That looks to be how Magnuson ties into the harness to get relay activation signal.
Not sure if I like that idea but all this does confirm why when I let it idle between AutoX runs the lid of the Hearbeat doesn't really cool down much.
Thanks
Try unplugging the relay and let the car idle. Make sure the noise you're hearing goes away with the pump relay unplugged. It could be a different relay you're hearing and sometimes even the clicking you can feel with your hand on it transfers from other relays.
The yellow wire is the activation wire that comes from the Magnuson supplied evap solenoid harness that comes with the kit. See paragraphs 107 and 204 and 205 here: https://b.cdnbrm.com/images/info/Mag...f?icid=MagnuSC
So, it would seem that the problem is most likely the evap solenoid circuit or the solenoid itself that’s causing this pulsed signal?
The EVAP is a PWM signal on most vehicles so I'm guessing it is on a vett. I haven't a clue as to why they chose that as a power signal.
I'll know more tonight when I get home but I'm guessing all of us Heartbeat guys have the same problem, I just happened to have the car idling in my garage and the noise is loud with the hood up.
The EVAP is a PWM signal on most vehicles so I'm guessing it is on a vett. I haven't a clue as to why they chose that as a power signal.
I'll know more tonight when I get home but I'm guessing all of us Heartbeat guys have the same problem, I just happened to have the car idling in my garage and the noise is loud with the hood up.
I suppose they chose that circuit as it was convenient, since they had to include an EVAP solenoid harness with their kits. I’m going to check mine later today and will let you know what I find out. Even if it’s not pulsing, I think I’m simply going to find another key-switched power source for that yellow wire.
After a conversation with Magnuson, These photos prove 100% their harness (at least on mine) is rolled. He did not believe me tell I sent these in. Pink is Ignition Grn/Wh is control They are rolled on this end Red/Yel goes to Gr/Wh not Pink as it should
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