2004 Rex, High Idle

Discussion in 'Modifications And Maintenance' started by Scuba Steve, May 21, 2007.

  1. Scuba Steve
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    Scuba Steve Well-Known Member

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    :emo: Okay, 04 rex. Typical stage 2 set-up. (BOV, MBC, etc..) okay okay...kidding

    Seems to have a high idle (1500-1750) when it's warm outside. this is the 2nd time it's happended.

    Sitting in traffic the car starts to idle high AND rpms are slow to drop between shifts. A/C has not been in use at all. Temp gauge is normal.

    RPM drop between shifts and idle returns to normal once car is up to speed on highway and/or Engine bay has cooled down.

    Any thoughts?

    Again....
    normal driving, stop and go traffic, high idle, RPMs slow to drop between shifts. Temp gauge normal, drives normal otherwise.
     
  2. Hallywood
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    Hallywood Well-Known Member

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    I heard something about the cruise control cable having something to do with high idle when its hot. It was over on nasioc I'll see if I can dig it up when i have some time tonight.

    ACTUALLY

    I think it was a post by walloftv's he'll chime in i'm sure
     
  3. AWDimprezaL
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    AWDimprezaL has more posts than you

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    try cleaning your iac valve, they get dirty over time
     
  4. piddster
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    piddster Lone Wolf

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    The factory temp gauges, at least in my experience, don't really move up untill you're REAL hot. Mine didn't budge when I was seeing 235 degrees in some traffic.
     
  5. Scuba Steve
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    Scuba Steve Well-Known Member

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    I'll try the CC cable first. If that doen't work I'll clean the IAC
     
  6. Hallywood
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    Hallywood Well-Known Member

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    just loosen it a little bit and see it if goes away.
     
  7. wall of tvs
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    wall of tvs Well-Known Member

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    Yup, same thing used to happen to my old '04 in extended stop-n-go traffic in the heat.

    I ended up loosening the cruise control cable and that helped. You might also want to look into coating or wrapping your downpipe. That would probably help also.
     
  8. Scuba Steve
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    Scuba Steve Well-Known Member

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    I'm going to try your suggestions on CC cable....

    I'd love to wrap my downpipe, but would probably make a mess of it. :ugh:
     
  9. Scuba Steve
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    Scuba Steve Well-Known Member

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    My GF, who also has a 04 wrx came home today and stated her car was idling high too!? I asked her how high and she said 1500-1700 rpm....

    What a coincidence! :ugh:
     
  10. wall of tvs
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    wall of tvs Well-Known Member

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    maybe a large comet showered our planed in a green haze........watch out for evil Coke machines! :p
     
  11. Dream
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    Dream Well-Known Member

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    Reset the ECU?
     
  12. wall of tvs
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    wall of tvs Well-Known Member

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    Well if it's anything like my car it will temporarily fix the problem for like 10 minutes.
     
  13. Scuba Steve
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    Scuba Steve Well-Known Member

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    did them last night, keeping my fingers crossed that it's fixed.
     
  14. silver03
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    silver03 Well-Known Member

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    So she got hot, and you were hot...and than? Who loves ya?
     
  15. Scuba Steve
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    Scuba Steve Well-Known Member

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    get back to work^^^:biggrin:
     
  16. sapalas
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    sapalas Well-Known Member

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    Had the exact same thing happen to my car today, 04 wrx,

    Has loosening the cc worked?
     
  17. Scuba Steve
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    Scuba Steve Well-Known Member

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    so far so good. the true test will be the next hot day.