|
Here's where I get to second-guess you, not be cause I like to stir things up, but because a lot of part requests turn out to be a search for something that is either unnecessary or unavailable.
So, with that said, I have to ask - have you actually measured fuel pressure and found it to be excessive, or are you assuming that the regulator is the root of the problem? I ask because regulators are pretty reliable, and because a stinky-rich condition can be caused by a variety of things including exhaust leaks, dirty fuel injectors, a lazy or dead oxygen sensor, or any number of electrical faults such as loose or dirty connectors, broken wires, etc. Also, any time the ECU is reset, it will take some time to learn and adjust its fuel tables based on feedback it gets from the o2 sensor. That means the engine won't run as well after an ECU reset as it will after it has been driven for a while and given a chance to adjust.
Unfortunately, the 20V fuel pressure regulator is not a part that Toyota makes available to US dealers, which makes it extra important to test it before trying to replace it. The best option if you do find it to be faulty is to take it to a wrecking yard and try to match it up with one from a common US-market car.
I know that's sort of answering a question you didn't ask, but hopefully it will help some anyway...?
|