We install a Volvo electric power steering pump and use the Holley Dominator ECU to control it.
2022 ж. 14 Қар.
7 990 Рет қаралды
In this video we install a Volvo electric power steering pump into Stitches and then use the onboard Holley Dominator ECU to control it.
Thanks for posting this! Just this week I reached out to Holley about this regarding an upcoming street car using Terminator X
You are most welcome! I'm glad we could help out.
what did you hear from holley regarding the use with a Terminator X ?
@@sexytxn76 under a defined speed limit range the Volvo pump can be triggered to turn off (I wanted to keep some original character of manual steering). But ultimately it was super unpredictable because it would cut out abruptly when accelerating through a turn at something like a stop sign.
You aren't so much "controlling" it with the ECU as you are just turning it on and off. Whoever actually figures out how to control the canbus functions of the pump to throttle the pump pressure with the Holley will be a genius.
Would be nice to utilize the CAN signals to control pump speed like the Volvo ECU does.
That would be awesome to be able to. The speed it runs at without the can signal is ok but would be more beneficial at a higher speed.
How did this pump work out for both cruising and drag use?
It's working out great! I had to raise the speed at which the pump turns back on after slowing down from highway speeds only because of the delay when it turns on. Other than that it's doing great. He comments on how much he enjoys it frequently.
Oh, and for drag race use he's only ran it once on the track but I have it setup to turn off at WOT on the Dominator. He hasn't commented on that yet.
What relay did u use to trigger the pump for the holley?
I believe I repourposed the factory AC clutch relay to turn on the pump.
@kbern88 I mean the one for the holley? U said pump trigger wire was 10a and holley was 2a so u needed a relay
I used an output from the holley which has a 2 amp max rating. So I used that output to trigger the AC relay to turn on the pump. Sorry if I didn't explain that well.
You think this EPS pump will support power steering and hydroboost brakes?
I don't think it would be capable at the lower operating speed. If there was a way to make the pump run at full capacity, maybe it could handle the hydra boost also.
What do you think about running two ehps pumps separately, one on power steering, and one on hydroboost brakes?
That would be quite the amp draw if both pumps were on at the same time. I wouldn't do that if it were me.
Ok. Was thinking about alternator upgrade and two batteries for a pickup truck. Was also looking for a way to add weight. Went from a big block to an LS
What has to be done if on stock ECU? Tap into a KOER wire and fuse it?
That's what I would do.
I'd probably use the fuel pump power wire going to a relay to switch it on. That way it's only on while the engine is running.
Being that you have countless amount of outputs, you could in also in theory use a ford fusion/C6 corvette pwm fan controller module to control the pump,
Well, the pump has about a 2 second delay to turn on so I don't think that would work. Might be able to modify the pump internal circuitry though possibly.
@@kbern88 I don’t see why it wouldn’t. It would just take about 2 seconds after the car turns on for the table created to take effect. Using the fan controller would allow you (in theory) to now actually modulate how much power the pump is receiving rather than turning it on and off. You could do speed vs rpm in a custom table and just have the controller modulate to 10% to 15% when cruising at certain speed vs having it just turn off and on and then having to deal with that two second delay you mentioned in the comments
I guess if you wanted to control the main power coming in you could try that. The power supplied to the pump requires a 80amp fuse so I don't know how well that would work with PWM. The car the pump comes out of controls the speed of the pump via canbus. If you could figure out how to talk with that system it would work even better.
Can you make a video or a video of a drawing? I think your idea would be cool @UpNorthCatsFan
@@23steph13 as much as I would like to claim the idea is mine it isn’t. Look up the video “PWM fan control with Holley” on KZhead. As the title states the guy in the video is speaking on fans in the video but concept could be applied to a power steering pump controlled by the same module.
...of course you don't have 10A on the CAN bus, the thick wires are supply
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