Recent content by Steven

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    Article: Dump Valves and Wastegates

    Just an issue with words...I've never heard "dump valve" used for anything on the intake side in 45 years of working with cars...but maybe that's because I'm a Canuck? I've always heard the term used for a vent on the exhaust system to "dump" exhaust pressure, typically bypassing cat...
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    fan shroud

    If you've got cracks at the mounts, I'd suggest get some epoxy and glass cloth and patch across it quick. OR use lots of glass-fiber sticky tape. Or take the whole shroud out now. Don't lose your fan or your rad because you just looked at it and said "Wow, lookit them cracks!" like I did...
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    fan shroud

    Thanks, but the clutch seemed to be fine through those events, and at present. It is hard NOT to know if it locks up - the fan howls and throttle response gets gluey, and engine not even hot yet! I had it happen on a 280ZX. The fan is basically idling in cold weather, or if driving lightly...
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    fan shroud

    I can believe your coolant temperatures are ok, but I suspect the rubber parts toward the back of the engine bay, especially on the turbo side, will not last well. Metal throughout the bay must be well above boiling point after hard runs on a hot day. Are those vents in your hood? I've been...
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    fan shroud

    Yeah, when it's really hot weather, you can hear that fan howl and feel the drag. It has to be eating at least a few horsepower. I can't imagine any electric fan having a continuous-duty, two-horsepower 12-volt motor - it would be huge. Heat is the enemy of engines. Electric fans must...
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    Error in TSRM on page FI-50?

    To wrap this up... Once the wiring made sense (no thanks to the TSRM) tracing the problem was straightforward, and it turned out to be the solenoid resistor, as 3p suggested. With a little help from Adrenaline Phil and his parts bins, I was back running all six cylinders a couple of days...
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    fan shroud

    My stock plastic shroud broke on the highway, smashed the fan, nearly wrecked the rad. I replaced shroud with new Toyota factory part, new Toyota fan, and straightened rad fins. Three months later, new shroud breaks again, smashes fan again. Toyota dealership would not warrant it (nor any...
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    Error in TSRM on page FI-50?

    So, Chriso, what is your setup now? Which TSRM diagram did you use? BTW, I note that the link 3p141592654 gave to the TEWD On-Line shows the same injector pairing and wire color coding as the Appendix in the TSRM. I'm headed out now to check those series resistors 3p141592654 pointed out...
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    Error in TSRM on page FI-50?

    Oh Lordy! Shaef, Suprarich, thanks, but this gets worse and worse... The injectors as I found them on my engine were exactly as Shaef listed them. Both wiring diagrams in the manual say our observed order is wrong, though they don't agree with each other... or our observed wiring. The...
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    Error in TSRM on page FI-50?

    Is it possible the Toyota Service and Repair manual has a booboo? It's my Bible and I'm starting to lose faith....and I'm getting very confused tracing my present injection problem. The injector pairing on the ECU outputs, as shown on FI-50, does not match the pairing shown on wiring diagram...
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    Oil: Royal Purple

    Photo of piston attached, re previous msg.
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    Oil: Royal Purple

    Well, umm, after reading the Bitron thread I ....[looking around for flamethrower pointed this way...] I'm almost afraid to touch this keyboard.... Could you please offer the references for your comment above? I dug around for about an hour and could find only one item that mentioned...
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    Oil: Royal Purple

    jdub, you are being persuasive. I looked over the oil FAQ, bobistheoilguy, read Dr Haas, and read the oil spec sheets, before I ever posted anything on this list on anything. It was the first thing that caught my eye when I came to the list. Still left me with "yes, but..."s, hence my...
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    Tell me it aint so....

    That white smoke on start-up sure does sound like a BHG. Continuing blue smoke could mean oil is leaking somewhere too. Might be the head gasket again -- or might be rubber valve seals which might recently have gotten hard when overheated in a temperature excursion from lack of coolant...