Originally posted by Fiero Vice: I definitely would be interested to know if it really works. Should I purchase this part or wait? Hmm
For the little bit I looked at it so far, it shouldn't be hard to do. The wiring is fairly easy, as the controller is a separate module. IIRC, the steering angle sensor is in the rack itself too, so shouldn't even need a newer steering column/wheel to get that. I think the hard parts would be getting the mounting height right and getting the brackets in, and getting the right tie rods for it.
For the little bit I looked at it so far, it shouldn't be hard to do. The wiring is fairly easy, as the controller is a separate module. IIRC, the steering angle sensor is in the rack itself too, so shouldn't even need a newer steering column/wheel to get that. I think the hard parts would be getting the mounting height right and getting the brackets in, and getting the right tie rods for it.
I doubt there is a steering angle sensor, but there is certainly a user torque sensor, somewhere in the setup.
The big question is how will the Honda module work without receiving CAN messages? In a fixed-gain screwball fashion, maybe?
Someone should rent/borrow a Honda S2000, and then log the CAN bus traffic. The messages relevant to the EPS should be deduced, and then spoofed by another box for use in a Fiero. Vehicle speed is obviously critical to have.
For CAN logging, I use an IXXAT USB-to-CAN converter, and their free MiniMon CAN logger software.
I doubt there is a steering angle sensor, but there is certainly a user torque sensor, somewhere in the setup.
The big question is how will the Honda module work without receiving CAN messages? In a fixed-gain screwball fashion, maybe?
Someone should rent/borrow a Honda S2000, and then log the CAN bus traffic. The messages relevant to the EPS should be deduced, and then spoofed by another box for use in a Fiero. Vehicle speed is obviously critical to have.
For CAN logging, I use an IXXAT USB-to-CAN converter, and their free MiniMon CAN logger software.
Because AP1 S2000 was not a CAN bus car. The AP2 (2nd Gen S2000) parts can't be used, I don't think. The DLC wire isn't required for the control module to work. There's inputs for the sensor input directly, for tach and VSS. I don't know what the PPM value for those two are, though.
Because AP1 S2000 was not a CAN bus car. The AP2 (2nd Gen S2000) parts can't be used, I don't think. The DLC wire isn't required for the control module to work. There's inputs for the sensor input directly, for tach and VSS. I don't know what the PPM value for those two are, though.
Seems relatively simple if there's none of that CAN rubbish then. I guess whoever would want to install a Honda EPS in a Fiero would need to learn about the Honda; find Honda schematics, and possibly probe a running car.
Seems relatively simple if there's none of that CAN rubbish then. I guess whoever would want to install a Honda EPS in a Fiero would need to learn about the Honda; find Honda schematics, and possibly probe a running car.
Done pretty much all of that. I have the rack, controller, and an S2000 service manual with the wiring diagrams. There's a data link wire for using a Honda PGM-FI tool to see what codes are stored in the steering module, and an output wire to tell the ECM to increase the idle speed. And one wire to trigger the EPS warning light in the dash if something is wrong with it.
Though, honestly, even without the the controller, the S2000 rack is a better rack, because it's a variable ratio, and I think it is quicker than the Fiero steering ratio (but having a little trouble finding exact numbers).
darbysan just completed a vue electric conversion on his car that seems pretty straight forward. I'll tell him to post in here on it if you want.
Just finished my install of the Vue EPS. I followed two threads here on the site, and found them very thorough. I did not need to use any machining or lathe work- just angle grinder, cut off wheel, reciprocating saw, die grinder, and welder. I bought a steering column so I could do most of the work on the bench, and that worked out great. Could be done easily in a weekend, with some planning. Hardest part was getting my old, fat body under the dash!! Total cost to me was under $175 ( including Ebay Controller module).
I debated going with an electro/hydraulic or hydraulic system ( my 3800 has the power steering pump too!) but I found the projected overall cost to be about triple the cost of the EPS unit, messier, and required a re-alignment ( just had mine done- more expense).
I wrote up my experiences to add to the threads below , but lost them before I could hit save I'll try and add them today. Edit: DONE: Here are my additional tips to add to the reference posts below: https://www.fiero.nl/forum/Forum2/HTML/139446.html
Have not seen a quickener, but when I measured mine, it was just under 2 turns Lock to Lock. Any less than than, and I think driving it could get pretty twitchy.
------------------ '87 GT , '00 3800 Series II SC, 4t65e.
If you put a steering quickener on the input side of the EPS, take caution.
As steering rate increases, so does the back-emf generated by the electric motor. At a certain critical speed, it becomes impossible to inject any more current into the motor due to excess back-emf. The power steering then drags you down, rather than assisting. This can be noticed even while palming the steering wheel rapidly in some cheap econo-cars.
I don't know if the Vue EPS has a high critical speed or not.
I'll try and add them today. Edit: DONE: Here are my additional tips to add to the reference posts below: 
