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Nicely done jimi. I remind everyone of the obvious though: An O2 sensor, WB or not, is only capable of measuring one thing: oxygen. And while there is a correlation between O2 and A/F there are several things that can goof it up. Leaks in the exhaust system for example. Since an O2 sensor...

The TPS is nothing more than a potentiometer and a switch. The pot measures throttle plate angle while the switch tells the ecu the throttle is closed. It's importamt the ecu know when the throttle is closed as it uses the information for several things, most notably to turn on the ISC system...

As evil said, 24 is the AFM, specifically the Ks signal. 51 can be used to check the A/C signal for idle up or the NSW if you have an auto tranny (think of it as a diagnostic within a diagnositc) but it's almost always caused by no closure of the IDL contacts in the TPS. With T and E1 jumpered...

Here's an interesting theory from a website I stumbled on:

Oil in the intake tract is either from the PCV system or a bad turbo. If it's in the accordian it's likely from the PCV system. Be sure the PCV orifice located deep in the TB is clear and blowby is not excessive. Oil on the EGR cooler is almost always from the valve covers. There is no other...

A bad TPS will certainly cause the engine to act weird. Since that is obvious and since you exepcted help while witholding information (thereby forcing me to waste time playing 20 questions) you're now on my list. Guards, take him away....

Yeah, we use the same kind of stuff all the time in aviation. Clean, spray the dye, wipe, develop, ect. Works very well, even better if you use the zyglo stuff and inspect under UV light. You don't want to get the dye on your hands though, it doesn't come off easy ;)

Lol, someone has too much free time. In case you guys didn't know Sept 19 is International Talk Like a Pirate Day: http://tinyurl.com/njbc

I'll bet it is as there is no way it's coming from the EGR cooler.

Clear the code and try again. Code 21 will not cause your car to "buck" so the code is from the buck and not the other way around. Me thinks.you've got more problems than a bad sensor as the car will not run noticeably different with a bad one than one that's working. That it will is a common...

Yes, I agree. I see no problem with what he wants to do, just wanted to point out the detergency thing is a common misconception. BF: People do use it for decarbonizing but that has nothing to do with it's detergency. If they're pouring in their crankcases they're wasting their time and money...

MDC, if you research that a bit I believe you'll find this is one of the oldest myths out there. There are a lot of things in ATF including mild dispersants but their high detergency is (as I recall) a myth that refuses to die.

Nothing like experience ;) Ferrari suggests that rule (rather than mess with the relief valve) so owners can choose an oil that'll give them that pressure. I know a surgeon who has two of the damn things and runs 5-20w year round. It takes that to get the recommended 12 centistokes at 100 C...

Lol...must be that weird math they teach down there. Just be sure to use the right oil so you get that ;)

Yer welcome. As with most things tribology is a complex subject and I'm certainly no expert but the fundamentals are a good place to start with any technical discipline. Master them first and the rest comes pretty easy. Btw, another poster mentioned an old rule of thumb that states 10 psi for...

http://tinyurl.com/oozkq No, I'm not saying high pressure is a bad thing, it's simply not needed for the power levels most here run. Some pressure is needed to maintain hydrostatic lubrication but it isn't the pressure that prevents contact, it's the film and how the oil wedge is built up under...

I'm puzzled by this whole shimming thing anyway. The Supra uses a low pressure high volume system. As if it weren't enough that millions of cars run that way without problem (including mine) for many thousands of miles, excess oil pressure has nothing to do with preventing metal to metal...

Now that is a nugget of gold. Following rote directions without understanding what it is one is doing or why is at the root of many a problem. Not to mention the failure to check what one has done afterwards.

Lots of firms make dye penetrant inspection products besides MagnaFlux. Dye pen and Zyglo are a far cry from magnetic particle inspection however. Dye pen won't show sub-surface problems for example, something MPI does. But Ok, fair nuff. And I agree, he had a BHG.