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^ Wise words. Preventive maintenance is always smart and the reason why after 22 years every component of my PS system is original. Syn fluid, cooling, and a filter go a long way towards the health of what is, and must be treated as, a hydraulic system. Fwiw my screen is always clean. I have yet...

I won't comment on this thread full 'o fail other than to say although not optimum the type and viscosity of oil used had nothing to do with your problem.

Good for you Kai. Go for it. You might want to ponder your former avatar too ;)

X2...

It wasn't meant to be a correction Ian. I was talking about the AC amplifier while I think you were talking about something else. If not then it was a correction. Then again since it's not possible for the AC amplifier to effect any of the servos/dampers (unless it's an OZ car thing) I dunno...

Fwiw after refining nearly all gasoline in the US (except in California) is distributed through just a few pipelines. It doesn't become Shell or any other brand until each firm's additives are put in at the tanker farm. Where the oil it's refined from originates is a different story of course...

I used to post lengthy explanations but learned it was usually a waste of time Nick. I could almost see the deer-in-the-headlights look. Or would that be monkey-in-the-headlights? ;) NE is the rpm signal from the 24 toothed gear. Stands for (N)umber of (E)ngine revolutions...

That's a pretty simple circuit as far as the climate control system goes. You should have +12 (from the gage fuse) on the yellow wire to the VSV when the key is on. The ground (yellow/blk) is supplied by a set of sliding contacts in the air mix servo and originates at ground point D which is the...

http://www.cygnusx1.net/Supra/Library/TEWD/MK3/manual.aspx?S=Main&P=15 If you've bypassed the relay why remove it? And maybe it's me but any device used as an anti-theft deterrent would not be useful at deterring theft ;)

http://www.cygnusx1.net/Supra/Library/TEWD/MK3/manual.aspx?S=Main&P=038 There's no more right direction than that...

If the MIL comes on with the key the relay is good. It's as simple as that...

What he said. Or remove the 30 amp CB and shove the positive in one of the big slots. Ground the neg to the chassis and push the switch. If nothing happens try the other slot...

Mmmm...nuns ;)

Until you fix 11 you won't see other codes. Clear it by pulling the EFI fuse for 30 seconds, restart the car, and see what comes back...

http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?S=FI&P=107 Yours appears to be stepping open when the engine is shut down but not stepping closed. Could be a broken wire or bad pin at the connector. Either that or it failed open but yes, you need to check it. No need to install...

It opens the hole to better allow air to pass. On the other hand with it gone there's no jiggling action. In either case if it's not at 12 o'clock it's useless...

That's vertical right? ;)

Ho boy X2 ;)

Should have left 'em on the starter bolt ;)

Grounds. Important ones...