TPS spikes to 90%
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Cadillac CTS First Generation Forum - 2003 - 2007 Discussion, TPS spikes to 90% in Cadillac CTS Coupe, Sport Sedan and Sport Wagon Forums; Here is the problem. 2005 CTS 3.6 lux. sport. During light acceleration between 40 - 50 mph I have a ...
  1. #1
    flwalks is offline Cadillac Owners Member
    Automobile(s): 2011 CTS
    Join Date
    Nov 2009
    Location
    Tampa, Fl
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    TPS spikes to 90%

    Here is the problem. 2005 CTS 3.6 lux. sport. During light acceleration between 40 - 50 mph I have a little stutter that is acting like a transmission slip. Had the transmission oil and filter changed today just to rule it out. I hooked up my android tablet with a blue-tooth adapter using the app. Torque and looked for codes, non found. I did notice that the throttle position (manifold & raw) is spiking to 90% for short periods of time. It only does this as stated above. I took apart the throttle position cover and tried to clean the contact pads with no change. The question is, is this a common indication of a bad TPS and do I need a new throttle body with TPS?
    Thanks Steve

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  3. #2
    AAIIIC's Avatar
    AAIIIC is offline Moderator
    Automobile(s): '05 CTS-V
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    Re: TPS spikes to 90%

    That definitely doesn't sound normal. I don't know if you can source just the TPS, or if you have to get the whole TB.
    '05 Stealth Grey CTS-V, Hyper Silver Linea Corse Venetos w/Continental ExtremeContact DWs (summer), black Team Dynamics ProRace 1.2 wheels with 275/35-18 R-compounds (track), Hyperblack Rota Torques (winter), KW Variant3s, V2 front brakes, Hotchkis rear sway bar, EPS cam, TEA-ported 243 heads, FAST92 intake w/LS2 TB, JBA Camaro/G8 1-3/4" shorty headers w/JBA cat pipes, Corsa exhaust, UUC motor and tranny mounts, UUC shifter, MAPerformance trailing arms, Specter cradle bushings, etc...

  4. #3
    flwalks is offline Cadillac Owners Member
    Automobile(s): 2011 CTS
    Join Date
    Nov 2009
    Location
    Tampa, Fl
    Posts
    15

    Re: TPS spikes to 90%

    No, the TPS is built into the throttle body. Just needed somebody that has seen this before and what was done to fix it. I found a new throttle body, OEM replacement, for $100 and might just replace it. The strange thing is I have no check engine light nor do I have any stored codes. If this was causing a studder you would think it would throw a code! I hate to just start throwing parts at it. The wife wants a new 2 door coupe, it might be time.

    Steve

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