Hey guys,

Question for all those running an electric steering pump on their cars. I have just retrofitted an electric power steering pump from a 92-95 Toyota MR2 in my 1993 Integra.

The 4 ports on the DA integra power steering rack are:
1. High pressure to pump
2. to resevoir
3. to oil cooler (plugged)
4. to speedo sensor (plugged)

I ran high pressure line to the pump, and also used the port and ran a line to reservoir. Everything is wired through a high amp relay and circuit breaker, and ran to a switch, it is all plumbed correctly and not leaking. The pump functions but NOT that great, There is still heavy steering resistance, it is nothing like the videos I have seen as far as steering effort, It is just slightly easier than having no power steering, It was bled free of air.

My 2 ideas of why it is difficult are:

1. There is a steering sensitivity adjustment screw on the pump that I have not adjusted. It is quite difficult to get to right now because I mounted the pump behind the dash and have to pull the dash to access it.

2. I plugged the other two unused ports (to steering cooler and speedo sensor) rather than looping them as they are not being used. I am not currently running an oil cooler. Could the fact that they are plugged be causing the difficult steering?

Thanks in advance, I know this is a wordy post and probably difficult to follow but I would love to get this working as it should!.

 

When I bought my car (2000 civic hatch racecar with B18C type R), it didn't have power steering, so I decided to add it. I ended up getting an later model MR2 pump (with the pigtail harness connected to it) and the race shop hooked it up. I believe that the shop connected the pump to the VSS wire/ECU so it would alter the pumping speed. The pump has worked great. I believe that the pump just goes thru the steering rack, and then back to the pump without any extra cooler in the loop. I listed a few links below. Did you rig it up like is shown? - Jim

https://honda-tech.com/forums/road-r...edone-2528249/

https://honda-tech.com/forums/road-r...steer-2222562/

https://honda-tech.com/forums/road-r...ering-1556487/

 

thanks, yes i did plumb it up what i believe is correctly The DA integra has 4 ports on the power steering rack, unlike some of the write ups that you posted. The two ports that I PLUGGED are what used to go to an power steering fluid cooler and to the mechanical VSS in the transmission of 90-93 integras. I am wondering if I should have looped these two ports rather than plugged them. It was very difficult to find fittings for the DA rack, two ports are extremely fine threads (m12x1.0).

 

If there is a line going out to a cooler then where does that fluid normally return? Same question with the vss.

 

The car did not have power steering when i purchased it. But from what I believe out of the 4 ports on a 90-93 integra rack are
A. to pump
B. to resevoir
C. to oil cooler
D. to VSS

The stock 90-93 integra reservoir has 3 ports on it (I am running a reservoir with only 2 ports). On the reservoir
1. to ps pump
2. to steering rack
3. to oil cooler (i believe)

I just purchased some new fittings and a mishimoto oil cooler and am planning to run it between the two unused ports on the steering rack that originally goes to the oil cooler and the VSS (ports C and D listed above) hoping that solves my issues.