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| pics of power steering (Page 1/2) |
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predmeister
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SEP 02, 06:08 PM
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does anyone have any clear pics of the EHPS in the prototype fiero? Boomtastic did on an old thread but they don't pull up anymore
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Dennis LaGrua
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SEP 02, 07:18 PM
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There are several forum members that have adapted electric power steering to their Fieros. Member Spoon is one who did a great job. Another member adapted a power unit on the steering column. Ask around and you'll find info on the modification. ------------------
" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "
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Chief
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SEP 02, 07:21 PM
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Patrick
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SEP 02, 07:32 PM
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Dennis LaGrua
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SEP 02, 10:21 PM
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I believe that some power steering racks that were used in Fieros are the 85-89 Mercury Merkur, 80's F-Body and Corvette units but don't quote me on this.
See this thread: http://www.fiero.nl/forum/A...060811-2-073100.html
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" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE " [This message has been edited by Dennis LaGrua (edited 09-02-2016).]
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predmeister
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SEP 03, 04:51 PM
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thank you!! is there any pics of the wiring going in to the fan?
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Chief
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SEP 03, 06:05 PM
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| quote | Originally posted by predmeister:
thank you!! is there any pics of the wiring going in to the fan? |
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There are no other pictures that reveal anything else. What you can not see is the switch that controls the steering effort with the aid of the VSS. This same system was made by Saginaw and carried over for use on the GM EV1. When all of the EV1s got scrapped the power steering units showed up on eBay and sold from $200 to over $1000. There is some documentation of that on this forum however the units soon sold out and one or another will turn up from time to time. None that I know of included the steering column switch.
If you can find this article it will enlighten you: Forbes, J., Baird, S., and Weisgerber, T., "Electrohydraulic Power Steering - An Advanced System for Unique Applications,"
In case you are too young to know what the EV1 was, they were electric vehicles only leased to a select number of people in California GM took them all back and scrapped them all. This after legislation that required all dealers to sell a certain percentage of electric cars by the year 2000 was dropped. There is a documentary on this: Who Killed the Electric Car?
https://assets.blog.hemming...//2013/06/033173.jpg
 [This message has been edited by Chief (edited 09-04-2016).]
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Chief
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SEP 17, 09:34 AM
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Description of EHPS:
The steering sensor is mounted on the steering column it is basically a switch that detects movement (clockwise-counter clockwise).
The brush wear detection switch is on the electric motor and warns of worn brushes.
The engine control computer is a signal from the ECM that wakes the PSC (or ECU as noted above) when the engine is running.
The rest is explained above.[This message has been edited by Chief (edited 09-17-2016).]
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predmeister
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SEP 18, 07:50 PM
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chief, where did you get this chart from? very cool
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pmbrunelle
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SEP 18, 11:37 PM
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The steering sensor *can* be nixed from that block diagram; you can implement power steering without knowledge of the steering angle.
These days, the motor could be AC brushless to eliminate the issue of brush wear.
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