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  1. gummycarbs

    Rough Idle in Drive (or reverse) with 1993 1FZ

    Yep. Along with the passages for stuff like the IAC. Mine was packed with carbon everywhere, but if yours wasn't obviously in need of cleaning then it might not be an issue for you. Someone once posted here about running steel guitar string through to verify that the lines through the intake...
  2. gummycarbs

    Rough Idle in Drive (or reverse) with 1993 1FZ

    That's not fine. Idle should be 650 +/- 50 RPM. How long has the vehicle run since doing the work? Presumably, the battery was disconnected and the ECU has to re-learn. You say that you replaced all of the vacuum lines, but did you verify that the internal passages are clear? Are you...
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