quote Originally posted by pavo_roddy: Hi all, I know they produce speed sensitive (semi powered) racks, but where would you source one.....I.E. anyone know of a car......Other than say a ferrari...;D

From my understanding high end chryslers have the speed sensitive racks ie. new yorker and the dodge intrepid if you could use these with a fiero I have no idea?

According the GM shop manual and Parts guide, the 88 Fiero already has the wiring in the dash harness and engine harness for the Rack. The only thing you need, it appears, is the right set of connectors for the front harness and a few feet of wire to splice into the line. Presumably installation shouldn't be all that difficult.

You're right, it won't be in his car because he didn't buy it. I do know who purchased this and he/she isn't "pure evil". The are PFF posters. They don't want it known publicly that they have it until/if it shows up and actually IS what is advertised. They have no reason to believe it is anything BUT what's advertised, but just in case they'd prefer to keep quiet for the moment. Anyone else "bragging" about it is blowing smoke.

John Stricker

quote Originally posted by fieroparts.com: You said it, pure evil. I bet he never gets it working right. That was a computer controlled system, plus he is missing some sensors. I hope he pulls his hair out trying to get it to work. I say if he goes to Daytona the system will not be in his car.

quote Originally posted by Msaby: Ok, guys i am tired of seeing these ps threads. I have been very reluctant to post anything becasue it seems to cause so much trouble. You can have ps in your fiero at a very reasonable price. Let me explain my set-up...you be the judge you can have both manual and ps in the same car. I have an 84 fiero that i have easily installed a chevette power steeering rack. i only had to fabricate one mount other than that the rack bolted in very easily. I did have to purchase a few other aftermarket items such as a double "d" steering shaft, a new steering joint and some tierod extensions. This was all that was needed to install the rack ,no machining of a merkur rack, a little welding yes but not much more. The pump was an easy choice a MR2 pump which is electric. You can wire it how you like....if you want you can wire the unit on a simple toggle and you can drive the vehicle without any power assist. if your GF or wife is driving the vehile flip the toggle switch and she has ps. If you want to get creative you can wire a few switches so the ps only works when you are in reverse or at low speed. I can't take complete credit for using the MR2 pump configuration, there is another forum member that has answered a lot of my questions and has saved me a lot of time researching the posssiblilty of using the ps ecm and sensors from the MR2. Oh and the chevette ps rack has the same ratio as the standard 84 steering rack. Thanks Msaby

OK I dont think I understand So I will ask before I fly off the handle
Did you say you put adapters on the tie rods? Because if you just put longer tie rods on you will DESTROY the geomitry of the ALREADY BAD pre 88 suspension system. Now if you put the adapter between the rack gear and the inner tie rod, now that would be OK. But a CHEVETTE RACK IS A BAD CHOICE FOR AN 88. So for anyone with an 88 DONT DO A CHEVETTE RACK.
If you have a pre 88 think about a diferent rack. The Chevette rack is a POOR choice for power steering. But that is just my opinion. The reason why I think like this is because there is no gear ratio change. If you can just "turn off" the boost and still be able to drive the car like normal, there is no advantage of ratio, otherwise you would not be able to turn the wheels at a stop with the pump off. I did power steering for a FASTER ratio. Now if you have large tires then maybe the Chevette rack would work for you. But I will admit that the pre88 does NEED some type of assist. I hated the high effort of my 87GT. But I would not do a Chvette rack.

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quote Originally posted by Poncho Jim: http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=7956036416 I'm pretty sure this will fit ONLY 1988 cars..

Man, you wade through page after page of mostly trivial, some useless, Fiero crap for sale on Ebay for days on end - take a couple of days off and something like this sneaks through! Thanks for the post. Interesting.

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RickN
White 88GT 5spd
White 85GT Auto

quote Originally posted by Toddster: According the GM shop manual and Parts guide, the 88 Fiero already has the wiring in the dash harness and engine harness for the Rack. .

I do know that the speedometer does have the 4000 pulse per mile output that was put there to feed the electronics to the Power Steering. I also know it's active because I am using it to drive my firebird gauges. Now where that signal goes once it enters the dash harness is anybody's guess. I don't understand the interface to the engine harness though. What in the power steering would be connected to the engine harness??

quote Originally posted by jscott1: I do know that the speedometer does have the 4000 pulse per mile output that was put there to feed the electronics to the Power Steering. I also know it's active because I am using it to drive my firebird gauges. Now where that signal goes once it enters the dash harness is anybody's guess. I don't understand the interface to the engine harness though. What in the power steering would be connected to the engine harness??

As you say the signal is coming off the VSS (which is connected through the engine harness) and that is used to trigger the EHPS computer to reduce or increase steering assist.

The EHPS Controller is powered by Hot wire with a fusable link. The relay control is powered by a 20 amp fuse in the dash running off the coolant fan relay circuit. The signal come off the dash at pin M of the C1 Connector and goes to the G7 pin of the C100 plug in the front trunk. This G7 wire is still there in every 1988 Fiero. the voltage apparently varies from 8.2 (VSS output) to 8.5 (VSS input) volts.

The plug is a standard 4 pin plug similar to the rear trunk release plug mounted to the pasenger side deck lid hinge bracket.

quote Originally posted by Toddster: As you say the signal is coming off the VSS (which is connected through the engine harness) and that is used to trigger the EHPS computer to reduce or increase steering assist. .

I'm 99% in agreement with you...but the VSS from the engine harness is not affected by the EHPS. The same VSS is fed to the speedometer in either case. What's different in the 88 is the M pin output, which you state goes to the G7 of C100, (and I believe you). This output is the buffered square wave at 4000 pulse per mile. The earlier Fieros don't have this at all. Therefore there is nothing different in the engine harness of an 88 with EHPS since the difference is in the dash harness.

quote Originally posted by jscott1: I'm 99% in agreement with you...but the VSS from the engine harness is not affected by the EHPS. The same VSS is fed to the speedometer in either case. What's different in the 88 is the M pin output, which you state goes to the G7 of C100, (and I believe you). This output is the buffered square wave at 4000 pulse per mile. The earlier Fieros don't have this at all. Therefore there is nothing different in the engine harness of an 88 with EHPS since the difference is in the dash harness.

Exactly! That is why hooking up the unit should not be too difficult since all the sensors and wiring are already there. The only thing you really need to do is splice in a plug and some wires up front for the (1) power (one red wire with a fuseable link), (2) Gound, (3) Input VSS and (4) Output.

pour in some hydraulic fluid and off you go!

quote Originally posted by Toddster: Exactly! That is why hooking up the unit should not be too difficult since all the sensors and wiring are already there. The only thing you really need to do is splice in a plug and some wires up front for the (1) power (one red wire with a fuseable link), (2) Gound, (3) Input VSS and (4) Output. pour in some hydraulic fluid and off you go!

Now I'm 110% in agreement with you The beauty of the EHPS is that it's plug and play.

quote Originally posted by jscott1: Now I'm 110% in agreement with you The beauty of the EHPS is that it's plug and play.

And I OUTTA KNOW....
https://www.fiero.nl/forum/Forum1/HTML/049676.html

[This message has been edited by Toddster (edited 03-01-2005).]