1UZFE Poor Idle/Hesitation Help Please
#16
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Location: CA - California
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So are there two FPRs? I know there is one on the front passenger side fuel rail. There is also a dampner on the driver's side rail.
I used to live in Lake Tahoe 20 years ago... I miss it.
I used to live in Lake Tahoe 20 years ago... I miss it.
#17
Lexus Test Driver
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Sounds like you've already got it figured out. Sorry if I was confusing things.
From looking at the manual more carefully now, I see you are completely on top of things with your readings there. Yes, idling spec is 28-34 psi, and your 41 may be causing problems.
I've been going up to South Lake Tahoe now for over 20 years, always wishing I could be there more.
#18
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So, after replacing the Coolant Temp Sensor, Coil (Primary resistance still high on the new one I got from Rockauto), and a new Fuel Pressure Regulator she is now idling very smoothly and like I have never seen it before. I am going to guess that the Sensor is playing the biggest factor since it looked considerably corroded when I pulled it. I am extremely excited going for a test drive now. Hoping to have no hesitation and full power.
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