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Thread: Spirit R/T has stumble/miss

  1. #1
    Hybrid booster
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    Mar 2013
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    Wastelands of NJ
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    Spirit R/T has stumble/miss

    My R/T has developed an annoying stumble/miss. When I first start driving the car when it's cold it will run fine, but then it will buck. I can accelerate and it seems to power through it. But it will do it at random times during my driving day. I put in fresh plugs and wires and a fuel filter. Didn't get a chance to check fuel pressure yet but it was suggested to me if I can "power" through the stumble it's probably not fuel related. I'm still driving the car and it doesn't shut down and always starts. But the stumble is very annoying. Any ideas? The car has also received a new throttle position sensor within the last 6 months and isn't throwing any codes.

  2. #2
    Mitsu booster
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    Apr 2017
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    FLORIDA
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    Re: Spirit R/T has stumble/miss

    Slow O2 sensor?

  3. #3
    Moderator Turbo Mopar Staff Force Fed Mopar's Avatar
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    Dec 2005
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    Greenville/Spartanburg SC area
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    Re: Spirit R/T has stumble/miss

    I'd test the voltage output on the tps anyway. New doesn't always mean good for years.
    Rob M.
    '89 Turbo GTC

    2.5 TIII stroker, 568 w/ OBX and 3.77 FD

  4. #4
    turbo addict Turbo Mopar Contributor iTurbo's Avatar
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    Dec 2005
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    Gillette, Wyoming
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    5,384

    Re: Spirit R/T has stumble/miss

    I had that problem on mine once and it was an intermittent connection inside the fuel rail sub-harness connector. I could kill the engine at will if I wiggled it just right.

  5. #5
    Hybrid booster
    Join Date
    Mar 2013
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    Wastelands of NJ
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    Re: Spirit R/T has stumble/miss

    Looks like it was a bad TPS. All it cost me was 20 bucks, a case of beer and about 3 gallons of sweat. Lol

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