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A faulty TPS will make the engine surge (rpm cut) if the throttle is opened beyond a certain point but the TPS (or wiring) has to fail a certain way and the surging shouldn't occur quite at those rpms. Regardless, it's a simple matter of checking codes to see if rpm cut is the culprit or if...

Well, it bypasses one of the pack's resistors. Why anyone would do it that particular way is beyond me though. It's electrically stupid. As to why it was done I can only guess. Maybe that one resistor is open or he installed high impedance injectors in those two locations. Or maybe he's just...

It gets old that's for sure. How can something so simple stump so many? It's like the CPS. Good thing there aren't more "PS" things on the car...

2.288 ohms or Kohms? And why would you be messing with the IDL contact when trying to resolve a 41? Although it's true IDL can cause 41 that particular failure mod is rare. The other two failures (open or shorted VTA) are much more likely...

^ This. Timing cannot be set with the IDL contact open. Nor will the idle speed control system function.

^ Finally, someone gets it right...

There certainly is a code 11. It's the most serious code the car can have and while it's present no other codes can be displayed. However using that source I can see how you thought that. In the future use this one: http://www.cygnusx1.net/Supra/TechTips/engine_error_codes.aspx It's better...

Ian: It shouldn't but even if it did it wouldn't matter because of the current involved. To be honest I've never seen igniter grounding effect timing, only coil saturation. Timing is, after all, determined by the ECU prior to reaching the igniter. The igniter does handle dwell though. I also...

Lmao. I get these or similar all the time. You'd think they would know better... FEDERAL BUREAU OF INVESTIGATION ROOM 4-230, 300 ALA MOANA BOULEVARD HONOLULU, HAWAII 96850-0053 Email: fboirobertsmuller@presidency.com Dear Sir/Madam , We the Federal Bureau Of Investigation (FBI...

Yes. It's the piece of sheet metal that's part of the hard line: http://www.cygnusx1.net/Supra/Library/EPC/291410/catalog.aspx?F=1603&P=2 Shields the hose from the exhaust manifold, something Toyota no doubt discovered during testing. Most cars I've seen have them busted off...

::shrug:: I changed that hose once on my car when I rebuilt the engine. The replacement was still fine when the car left me. Two hoses in 22 years and both were OEM. Make sure the heat shield isn't missing...

No

Used a maf cleaner eh? That's not going to clear the code 24. It'll make the 31 permanent though...

I've been accused of many things but jet cocking isn't one of them. I'm more a take my time kinda guy...

The pump (and the pump motor) can be easily checked in situ several ways, right down to the rpm. As for the wiring just look at the schematic...

My igniter was relocated to one of the brake proportional valve mounting bolts because I needed the stock location for a coolant filter. Along with the igniter the ECU/injector grounds should also be connected to the fender ground point. I also chained all the factory ground points together...

"Need help with Supra Wiring? 7M : 1JZ : 2JZ, or any other Supra wiring? I can help!" Call that guy :)

It's the fuel pump resistor. Without going into too much detail it's used to run the pump at lower speed except when starting and at WOT...

The heater supply (+B) is protected only by the 15 amp EFI fuse, which is obviously not at fault in your case...

You be welcome Kenny. I recommend connecting to the battery fender ground and 12 awg is way overkill but hey, whatever works...