Before I do something radical like sell my car...
It will fire up but not run. That's a whole other furball discussed elsewhere, and I'm fairly certain that the problem is going to be in the "VAST" ignition system. Hopefully the ignitor/coil set, not the distributor or ECU.
[footnote: Problem eventually solved with a chafed wire between the airflow sensor and the ECU.]
But for here and now, THE question is, are the ignitor modules for the EU and US version of the 4AGE substantially the same?
I see the US part, if you can find a third-party module, is nearly $350 while the EU version is under $60, and if the only difference is a tweak in the dwell/timing aimed at emissions....hell for $60 I'd just buy the EU part, swap it in, and call that cheap diagnostics compared to all the other misery this problem has given me.
The parts LOOK plug compatible. They're both from a less-than-prime 3rd party supplier, but the $700 Toyota part is discontinued, and yes, I've asked on the forum but no one has the exact same part number that my 6/85 4AGE was built with.
So...Come on lady luck, I've got some dice to roll. Any advice on how the ignitor modules (which tell the ECU dwell/timing information, not just gross spark) might be different?
Off topic but on the larger issue: it's a hot start not start issue beaten to death elsewhere. Fuel pump runs (pressure unknown), EFI and COR relays and all that supplying power to the pump 100%. Engine will fire up, stumble and die or goose to 2500rpm then stumble and die, either way, stumble and die. And up until July when the wx got over 90F and stayed over 90F, the damn thing ran like a clock. 3000 highway miles without a hiccup in the three months before that, the only reason for the problem is the HEAT. Same thing happened last summer, went away with cooler wx, but seems worse now.
It shouldn't be heat-related if it is the ignitor. "Shouldn't" since the whole engine bay is near 200F when it is on the highway all day--and then it restarted just fine. Something in the ambient temperature, outside of the car, not the engine bay, not the passenger compartment, not the fuel tank, is the problem.
But we don't have an "ambient outside air temperature" sensor to go bad, do we? That would be an AFM function, and bypassing that doesn't help either. Bypassing the cold start injector also makes no difference. Didn't I say, FURBALL?!
Tomorrow I try to negotiate some scope time, it's either that, throw parts at it, or...there's gonna be another GT-S on the market. (And I'd hate to do that, don't encourage me.<G>)<br /><br />
Modified by Red at 7:02 AM 12/31/2012
Modified by Red at 7:03 AM 12/31/2012
--Original owner, '85 Corolla GTS. Will trade for a Cadillac-Gage V150, or a Ford GT, in similar condition.