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Discussion Starter #261
I think it would be great but if the factory pump flows around 3-4 gpm @ 1500 psi then it will take between 2.6-3.5 hp motor.

A 12v dc motor rated at 3hp is 2200 watts!


From what I can find the hydroboost seems to requires around 2-3gpm.


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I found some Volvo electric PS pumps for $100- $160... Funny thing is the motor is made by Ford! lol But with a ram assist it might be a good deal for less than 1/2 of that ultimate ZF pump which is just a standard 4th/5th gen pump.
 

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Discussion Starter #263
an electric setup would be sweet, biggest concern i would have would be if the system fails, how do the brakes react?
True, it would be the same as if you spit the belt off, which happened to me on the Hwy, no steering, and no brakes! What's more likely to happen, water pump spitting the belt, or electric motor quitting? I have no idea.
 

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Discussion Starter #264
I also thought an electric PS pump would be a great theft deterrent. A thief can't go far without steering or brakes. Also, if the engine stalls or dies for what ever reason you can still steer, and stop with the elec pump on it's own circuit and a hidden switch.
 

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True, it would be the same as if you spit the belt off, which happened to me on the Hwy, no steering, and no brakes! What's more likely to happen, water pump spitting the belt, or electric motor quitting? I have no idea.


No steering or brakes, or no power steering or brakes? I’d imagine in an emergency one could also use the parking brake (while pulling the lever to keep it unlocked) and gearing down to get slowed down in “not very quickly”...

I know jeep had problems with the EPS for a couple years blowing seals out. Basically it was over-boosting the steering while off-roading. Buddy of mine blew two pumps like that in his wife’s XJ-U. Her were no happy camper.


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New belt routing without PS pulley, and with PS pulley.


So is this routing assuming an electric fan?

Been threads indicating they’re ok for daily driving but not as effective for towing. No personal experience so just regurgitating possibly wrong info there.

Wonder how it’d work with electric fans and an electric water pump. Then you could keep them going at a set rate irrespective of engine speed and theoretically continue pulling max BTUs out of the engine while generating idle or low-rpm heat.


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Discussion Starter #267
No steering or brakes, or no power steering or brakes? I’d imagine in an emergency one could also use the parking brake (while pulling the lever to keep it unlocked) and gearing down to get slowed down in “not very quickly”...

I know jeep had problems with the EPS for a couple years blowing seals out. Basically it was over-boosting the steering while off-roading. Buddy of mine blew two pumps like that in his wife’s XJ-U. Her were no happy camper.


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They may have overheated the fluid. That can happen esp off-roading, Hwy driving not so much. They probably just needed a bigger cooler.
 

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Discussion Starter #268
So is this routing assuming an electric fan?

Been threads indicating they’re ok for daily driving but not as effective for towing. No personal experience so just regurgitating possibly wrong info there.

Wonder how it’d work with electric fans and an electric water pump. Then you could keep them going at a set rate irrespective of engine speed and theoretically continue pulling max BTUs out of the engine while generating idle or low-rpm heat.


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You're a few pages behind lol...I've been testing an electric fan/elec WP for a while now. I opted to start with a bigger radiator to begin with, and I'm using a Pulse Width Modulator to control the WP speed, so on a hot day or off-roading/high demand and idling the pump and fans will speed up where as with a mechanical WP and fan you're SOL.

Start @ the beginning of this thread for more info.
 

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I also thought an electric PS pump would be a great theft deterrent. A thief can't go far without steering or brakes. Also, if the engine stalls or dies for what ever reason you can still steer, and stop with the elec pump on it's own circuit and a hidden switch.
if the pump is on a 12v switched line and the motor stalls, no loss of brakes or steering. i guess there are all kinds of conditions that can take it either way. i think my truck has stalled on me 1x way back in the day of the edge box that was on there. seems low risk, maybe the same for the water pump.

there is a slim chance i may get to my ewp install today, belt & tensioner are in hand, just need to solve 1 issue relating to disabling it during tune downloads.
 

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Discussion Starter #270
Don't rush the install, give yourself time to test it so you're comfortable with it before you go on a long drive.
 

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@Gator1 you sir, and your bum knee, are a horrible influence. There are now about 5 extra lines on my truck wish list. Buddy of mine is going to start putting me on light (<25k lbs GCW) short haul hotshot loads that his medium duty full time drivers don’t want to deal with once I have a chance to get my license swapped up from a normal one. I’d love to see how this setup would hold to some towing especially with the promise of increased unloaded efficiency- which would make deadheading a lot more palatable.


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Discussion Starter #275
you should be runnning in on a separate circuit anyways... 12v switched and power is off, no battery drain.
Any idea how that would work as far as rpm's, or power output? it's a 100 amp fused motor, would it only pull amps as needed, or be running flat out 100% of the time? They don't sell the wiring harness separate, I'd have to make my own. One connection is just power and ground, the other is a 3 pin connector that I assume would go to the cars ECM.
 

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the 2nd connector is probably a 5v pwm circuit. if u had one in front of you i would be an ohm meter would reveal a common ground and isolation between power. best bet is to see about getting a schematic of it installed on an oem setup. then u would know which pin is the pwm control.
 

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Discussion Starter #277
So, would it work by just connecting a switch to the correct pin, or would I have to run it through some type of control/PWM to adjust the load?
 

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Discussion Starter #279
Could be why they went to a belt driven pump in 2011-2015. Too many problems/meltdowns.
 

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Discussion Starter #280
I finally got a reply from the vendor, the pump pulls 7 to 15 amps @ idle, 40 to 50 when turning, and up to 80 at full lock. Not super bad.
 
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