EGR tubes and TPS question. - Page 2
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HT4100 4.1, 4.5, 4.9 Discussion, EGR tubes and TPS question. in Cadillac Engine Technical Discussion; Sputter and jump at a crack of the throttle could indicate a vacuum leak somewhere... What makes you say that ...
  1. #16
    drewsdeville is offline Cadillac Owners Master
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    Re: EGR tubes and TPS question.

    Sputter and jump at a crack of the throttle could indicate a vacuum leak somewhere...

    What makes you say that it's running rich?

  2. #17
    ga_etc's Avatar
    ga_etc is offline Cadillac Owners Connoisseur
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    Re: EGR tubes and TPS question.

    Haven't checked the FPR. Thought we had all the vacuum leaks sorted out but maybe not. Where is the FPR?

  3. #18
    HUF's Avatar
    HUF
    HUF is offline Cadillac Owners Connoisseur
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    Re: EGR tubes and TPS question.

    Quote Originally Posted by ga_etc View Post
    Haven't checked the FPR. Thought we had all the vacuum leaks sorted out but maybe not. Where is the FPR?
    Near the throttle body. A mushroom-shaped little black canister with a vacuum tube attached.

  4. #19
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
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    Re: EGR tubes and TPS question.

    Pull the vacuum line and look for fuel leaking from the nipple. There should be none.

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