Power Steering Problem

Bill Vun · 03-24-2013, 09:26 AM

Hi

I'm a newbie to posting threads at this site but I've been reading threads for a long time.

I have a 1989 (build date) Supra, which I just got repaired for a blown head gasket. They machined the head and relaced the head gasket and I've had no problems with that.

My problem is that I'm finding my steering has become a lot heavier than before I put it in for repair. I have asked the repairer if they have modified the power steering however they said they haven't touched it.

I have checked the power steering fluid levels as well as have a basic look at the power steering lines to see if anything is leaking but all seems to be fine.

Not sure where else to look and would be interested in any possible thoughts or soultions to my problem.

Thanks in advance

Regards,
Bill

P.S I have owned the car since brand new and this is the only major problem I have had with it apart from a few battery problems.

interested! · 03-24-2013, 10:11 AM

Hi! , I remember there is a wiring loom connected to the steering rack , has this been disconnected? - easily lost in the cluttered engine bay.

btwilson86 · 03-24-2013, 05:30 PM

Is it difficult to turn the wheel regardless of RPM, or is it only difficult at idle? If only at idle/low RPM, check that the vacuum line running from the accordion hose (after the AFM) to the power steering pump is attached. I've found that tends to be overlooked during reassembly of the intake piping.

MA70-3.0GT · 03-25-2013, 12:31 AM

As the above say, there is a vac line & a wiring plug that could be the cause. I'd favour the wiring for the speed sensitive power steering being left off (I did this once just to see what difference it made & it made the low speed steering heavier) but it's worth checking both.

interested! · 03-25-2013, 01:14 PM

Quote:

Originally Posted by btwilson86

Is it difficult to turn the wheel regardless of RPM, or is it only difficult at idle? If only at idle/low RPM, check that the vacuum line running from the accordion hose (after the AFM) to the power steering pump is attached. I've found that tends to be overlooked during reassembly of the intake piping.

Hi! On my 7MGTE , this flexible small black hose is under and attaches to - the large hose at the Turbo intake -attaches to a right angled pipe -- easily overlooked , nearly forgotten this several times .

Bill Vun · 04-07-2013, 09:30 AM

Hi all,

Apologies for taking so long to reply but thanks for the advice. I followed the trail of the wire and found it wasn't plugged in. When I plugged it in she worked a treat.

Thanks for your help.

Regards,

Bill.

interested! · 04-07-2013, 10:26 AM

Hi Bill , The beauty of this forum are the variety of replies and possible cures for problems , very pleased that you found an answer and cured the power steering problem by reconnecting the loom . Question? did the repairers torque the head to the higher limit as recommended by this forum ? , retorqued mine ( 7MGTE ) to 75 ft lbs after 500 miles . Happy motoring .

03-24-2013, 09:26 AM	#1
Bill Vun Stock Join Date: Mar 2013 Location: Australia Posts: 2	Power Steering Problem Hi I'm a newbie to posting threads at this site but I've been reading threads for a long time. I have a 1989 (build date) Supra, which I just got repaired for a blown head gasket. They machined the head and relaced the head gasket and I've had no problems with that. My problem is that I'm finding my steering has become a lot heavier than before I put it in for repair. I have asked the repairer if they have modified the power steering however they said they haven't touched it. I have checked the power steering fluid levels as well as have a basic look at the power steering lines to see if anything is leaking but all seems to be fine. Not sure where else to look and would be interested in any possible thoughts or soultions to my problem. Thanks in advance Regards, Bill P.S I have owned the car since brand new and this is the only major problem I have had with it apart from a few battery problems.

03-24-2013, 10:11 AM	#2
interested! 3" Exhaust Join Date: Apr 2011 Location: redhill surrey uk Posts: 142	Power Steering Problems Hi! , I remember there is a wiring loom connected to the steering rack , has this been disconnected? - easily lost in the cluttered engine bay.

03-24-2013, 05:30 PM	#3
btwilson86 Super Moderator Join Date: May 2007 Location: Billings, Montana Posts: 1,034	Is it difficult to turn the wheel regardless of RPM, or is it only difficult at idle? If only at idle/low RPM, check that the vacuum line running from the accordion hose (after the AFM) to the power steering pump is attached. I've found that tends to be overlooked during reassembly of the intake piping. __________________ 1989 7MGTE R154 Targa Top White Package w/Blue Interior Driftmotion 57trim CT26, Upgraded Intercooler, 2.25" Hard Pipes, 3" Turbo Back Exhaust with Test Pipe, HKS VPC w/GM 3 bar MAP sensor, APEXi S-AFC, Walbro 255lph fuel pump, ProSport EVO Series Boost / Fuel Pressure / AFR gauges, Lotek a Pillar Gauge Pod, HKS Type 0 Turbo Timer, Eibach Lowering Springs, Tokico Illumina II TEMS struts, custom powder coated Motegi Racing TrakLite wheels

03-25-2013, 12:31 AM	#4
MA70-3.0GT 12psi boost Join Date: Oct 2009 Location: Crewe, England Posts: 356	As the above say, there is a vac line & a wiring plug that could be the cause. I'd favour the wiring for the speed sensitive power steering being left off (I did this once just to see what difference it made & it made the low speed steering heavier) but it's worth checking both. __________________ '89 MA70 Supra GT aero 3.0turbo JDM, Rebuilt motor, K&N intake, 3" stainless turbo-back. New turbo and braided line kit... '89 Honda NC27 400, NC23 cams, open pipe, PC36a shock & possibly Showa USD forks... '83 Yamaha 29R XJ750E-II, number 69 off the line, only runner in the country? Original except Koni shocks '95 Honda PC26 CB500R, Winter hack, hateful, trying to sell it I'm not paranoid, they really ARE after me!!!

04-07-2013, 10:26 AM	#7
interested! 3" Exhaust Join Date: Apr 2011 Location: redhill surrey uk Posts: 142	Power Steering Problems Hi Bill , The beauty of this forum are the variety of replies and possible cures for problems , very pleased that you found an answer and cured the power steering problem by reconnecting the loom . Question? did the repairers torque the head to the higher limit as recommended by this forum ? , retorqued mine ( 7MGTE ) to 75 ft lbs after 500 miles . Happy motoring . Last edited by interested!; 04-07-2013 at 10:33 AM. Reason: extra info

04-07-2013, 09:30 AM	#6
Bill Vun Stock Join Date: Mar 2013 Location: Australia Posts: 2	Hi all, Apologies for taking so long to reply but thanks for the advice. I followed the trail of the wire and found it wasn't plugged in. When I plugged it in she worked a treat. Thanks for your help. Regards, Bill.

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