power steering switch
Thread Starter
Joined: Sep 2008
Posts: 700
Likes: 1
From: San Fernando valley-Lancaster,CA
Car: '86 TRANS-AM WS6
Engine: 1989 355 TPI L98
Transmission: TH700R-4
Axle/Gears: BorgWarner 9 bolt/ 3.27
power steering switch
i did a swap from a '86 305 tpi to a '89 350 tpi i bought a '89 formula wiring harness complete for the same year setup but dont know if the harness was equipped for the power steering switch could i just change the lines to the regular ones with out the switch or do i need to keep the switch....i might have other questions related to this swap but ill go 1 question at a time please help
Senior Member
Joined: Apr 2007
Posts: 668
Likes: 0
From: wallingford,ct
Car: 91 formula ws6
Engine: 355 tpi OBDII
Transmission: 4l60E
Axle/Gears: 2.73 with 4th gen brakes
Re: power steering switch
i read on here you can hook it inline with the a/c wiring to get a bump in idle during low speed turning? atleast im pretty sure i did. lol
Thread Starter
Joined: Sep 2008
Posts: 700
Likes: 1
From: San Fernando valley-Lancaster,CA
Car: '86 TRANS-AM WS6
Engine: 1989 355 TPI L98
Transmission: TH700R-4
Axle/Gears: BorgWarner 9 bolt/ 3.27
Re: power steering switch
thanks for the tip
Moderator
Joined: Mar 2001
Posts: 14,293
Likes: 195
From: Doghouse ······································ Car: 1989 Formula 350 Vert Engine: 350 L98 Transmission: 700R4 Axle/Gears: B&W 3.27
Car: 87 Formula T-Top, 87 Formula HT
Engine: 5.1L TPI, 5.0L TPI
Transmission: 700R4, M5
Axle/Gears: Sag 3.73, B&W 3.45
Re: power steering switch
My 87 had an LG4 (4BBL), I converted it to TPI, Originally it had the switch for the Power Steering... I left it there, nothing hooked up to it, it drives fine, never felt the need for it honestly...
John
John
Thread Starter
Joined: Sep 2008
Posts: 700
Likes: 1
From: San Fernando valley-Lancaster,CA
Car: '86 TRANS-AM WS6
Engine: 1989 355 TPI L98
Transmission: TH700R-4
Axle/Gears: BorgWarner 9 bolt/ 3.27
Re: power steering switch
some other people have stated that under slow turns or hard turns it might stall because its not inputing signal to the ecm
Senior Member
Joined: Apr 2007
Posts: 668
Likes: 0
From: wallingford,ct
Car: 91 formula ws6
Engine: 355 tpi OBDII
Transmission: 4l60E
Axle/Gears: 2.73 with 4th gen brakes
Re: power steering switch
mine stalled the other day but my idle speed isnt high enough. i just swapped so im still working out the bugs.
Thread Starter
Joined: Sep 2008
Posts: 700
Likes: 1
From: San Fernando valley-Lancaster,CA
Car: '86 TRANS-AM WS6
Engine: 1989 355 TPI L98
Transmission: TH700R-4
Axle/Gears: BorgWarner 9 bolt/ 3.27
Re: power steering switch
i checked the '89 harness that i got and cant find the wire for it i know the color is green/red and black/white and i followed it to the main harness where all the wires meet the thickest part of the harness and doesnt have that wire
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