Jake Posted January 30, 2005 Share Posted January 30, 2005 I've fitted a second hand power steering pump that I bought from Chris Wilson but my power steering still isn't working. I'm supposed to bleed the PAS system by turning the steering wheel from lock to lock a few times with the front wheels off the ground, right? I've done that and the fluid level dropped a bit the first time but there's still no assistance to the steering. I've taken the car out for a drive but that didn't help either. Bloody hard work it was too ! Apart from changing the rack I'm out of ideas now, any suggestions? Thanks Quote Link to comment Share on other sites More sharing options...
paul mac Posted January 30, 2005 Share Posted January 30, 2005 when you get the fluid going through, it will cavitate like mad and make a god awfull noise as you turn the steering wheel and there'll be loads of air bubbles in the reservoir, this lasts for about 5 mins till all the air is out, has it done this when you changed the pump Quote Link to comment Share on other sites More sharing options...
Jake Posted January 30, 2005 Author Share Posted January 30, 2005 Yes there was a load of bubbles in fluid at first, it's cleared now though. Alas still no PAS. Quote Link to comment Share on other sites More sharing options...
colsoop Posted January 30, 2005 Share Posted January 30, 2005 Yes there was a load of bubbles in fluid at first, it's cleared now though. Alas still no PAS. Have you checked the "Ecu ig" fuse in footwell ? Quote Link to comment Share on other sites More sharing options...
Jake Posted January 30, 2005 Author Share Posted January 30, 2005 No mate, I've never heard of it. What does it do? I'll see if I can find it. Those fuses in the footwell are difficult to see. I usually end up pulling each one out! Quote Link to comment Share on other sites More sharing options...
colsoop Posted January 30, 2005 Share Posted January 30, 2005 I had a problem where my power steering stopped working after i wired in a gauge i looked in the footwell and that fuse had blown. have a look here for wiring diagram: http://www.mkiv.com/manual/1995_electrical_manual/I/95elec_182.JPG Quote Link to comment Share on other sites More sharing options...
Jake Posted January 30, 2005 Author Share Posted January 30, 2005 I see. Well, I've checked all the blade type fuses in the footwell and none of them have blown. How do I identify the one you mentioned? Thanks Quote Link to comment Share on other sites More sharing options...
colsoop Posted January 30, 2005 Share Posted January 30, 2005 when you take the little fuse cover off on the reverse of that you get a diagram showing you where each particular fuse is located. Quote Link to comment Share on other sites More sharing options...
Jake Posted January 30, 2005 Author Share Posted January 30, 2005 It's supposed to have a fuse cover? :bugger: I've got two Supras! I wonder if the VVTi has the same fuse arrangement...... Quote Link to comment Share on other sites More sharing options...
colsoop Posted January 30, 2005 Share Posted January 30, 2005 I would get mine but i dont have my car at the moment Quote Link to comment Share on other sites More sharing options...
Jake Posted January 30, 2005 Author Share Posted January 30, 2005 The VVTi fuses are laid out differently. Anyway, I've checked them all and none are blown. Any other ideas folks? Quote Link to comment Share on other sites More sharing options...
Whitesupraboy2 Posted January 30, 2005 Share Posted January 30, 2005 when my speedo dies i lose all power steering so i wuld of thought their must be a control unit, checked that?? just idea im trhowing in Quote Link to comment Share on other sites More sharing options...
lovatt Posted January 30, 2005 Share Posted January 30, 2005 could it be a speedo convertion problem ? dodgy conection or broken unit ? Quote Link to comment Share on other sites More sharing options...
Ian C Posted January 30, 2005 Share Posted January 30, 2005 Mmm, when I lost my speed sensor signal due to a dodgy ECU connection I had overly-light PAS as it thought I was stationary all the time. I would have thought that would be the default if the sensor signal was playing up. Any stored codes Jake? -Ian Quote Link to comment Share on other sites More sharing options...
Jake Posted January 30, 2005 Author Share Posted January 30, 2005 Any stored codes Jake? I tried to read the codes but it doesn't seem to have an error stored. Just to check I'm doing it correctly: With a voltmeter I'm seeing 12 volts across TE1 and E1, but when I short those out with a wire I'm not seeing a code on the dash. When the ignition is turned on, but without starting the engine, the yellow Engine symbol flashes constantly at the same time as the O/D off light. That means no code is stored, right? Quote Link to comment Share on other sites More sharing options...
Ian C Posted January 30, 2005 Share Posted January 30, 2005 Yep Argh. What is it with you and electrical problems -Ian Quote Link to comment Share on other sites More sharing options...
Jake Posted January 30, 2005 Author Share Posted January 30, 2005 It must be my animal magnetism. Quote Link to comment Share on other sites More sharing options...
Ian C Posted January 30, 2005 Share Posted January 30, 2005 Right, your power steering is referred to as PPS - Progressive Power Steering. Your PPS ECU is at P4, which is passenger side footwell sidewall (see first pic) It has connections as shown in the second piccy. Check all those, you might want to concentrate on the solenoid side, as I think a loss of the SPD signal makes it run overly light as I mentioned earlier. Your solenoid is at position P1 on the third pic. Bear in mind you have to mirror these suckers for RHD I'd do this: Check the ECU is getting power Check it's got a connection on the SPD line Check if the ECU is kicking out a voltage on the solenoid line when the wheel is turned. If it is, check if the solenoid is seeing this voltage - if not, it's a wire/connector fault. If it is, the solenoid is buggered or the mechanical system still isn't right. -Ian Quote Link to comment Share on other sites More sharing options...
Jake Posted January 30, 2005 Author Share Posted January 30, 2005 Blimey. I'll try to get my head around that. Thanks for the help Ian, you're a star Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted January 31, 2005 Share Posted January 31, 2005 I casn't see any electrical problem giving NO PAS assistance at all... If the pumps ok, and the one I sent was off a working su=ystem, then it must be the rack seals that have failed. I'd not run the engine until it's sorted, as debris from the rack will damage the new pump.... I can source a properly done exchange rack, I think. Quote Link to comment Share on other sites More sharing options...
Jake Posted January 31, 2005 Author Share Posted January 31, 2005 Wouldn't it be leaking fluid dramatically if the rack seals had failed? Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted January 31, 2005 Share Posted January 31, 2005 It depends which seals have failed, a seal failure in the spool valve will often just recirculate fluid back to the pump. Quote Link to comment Share on other sites More sharing options...
Jake Posted January 31, 2005 Author Share Posted January 31, 2005 I see, thanks Chris. Is there anything I can do to establish whether the fault is with the rack before I shell out for a new one? I bet they're not a five minute job to change! Quote Link to comment Share on other sites More sharing options...
merckx Posted January 31, 2005 Share Posted January 31, 2005 I casn't see any electrical problem giving NO PAS assistance at all... . It is possible, I've been fitting a new Cat 1 alarm to the car over Christmas. I started the car to move it a little and found I had zero power steering , this was totally unexpected. All was well when I fiited the alarm . I cannot be 100% but I think it was one of the ignition wires that the alarm immobilises! The old alarm didn't have it's immobiliser circuits wired up correctly, one of the circuits when immobilised didn't prevent the engine from starting or running. Thinking back, this was the one which stopped the power steering. Quote Link to comment Share on other sites More sharing options...
absz Posted January 31, 2005 Share Posted January 31, 2005 might be way out but i thought that the hydraulic valve in the steering rack controls the pressure so if theres no signal voltage at the valve then there will be no pressure,as the valve will be fully shut ? it might be worth checking the voltage at the steering rack end. you say you wired in a alarm could it be possible that the signal wire at the back of the dash. i think its the pink wire that goes to the kph/mph meter. just thinking LOUD Quote Link to comment Share on other sites More sharing options...
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