Hard Starting STS
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Northstar Engines and System Technical Discussion Discussion, Hard Starting STS in Cadillac Engine Technical Discussion; I recently bought a 99 STS with 67k miles. I have noticed that under certain conditions the car is somewhat ...
  1. #1
    leveespector is offline Cadillac Owners Member
    Join Date
    Nov 2003
    Location
    Georgetown, IN
    Age
    40
    Posts
    8

    Question Hard Starting STS

    I recently bought a 99 STS with 67k miles. I have noticed that under certain conditions the car is somewhat hard to start.

    For example, if you turn it off and run into the mall or grocery for half an hour or so - the car is hard to start when you come back out.

    It starts fine first thing in the morning and if it has only been shut off for 2 or 3 minutes. But - if you don't hold the key long enough and dont "allow" the car to start, then it is harder to start on the second try.

    Make sense?

    Anyone else have a similar problem?

    Any thoughts are appreciated.

    Chris

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  3. #2
    elwesso's Avatar
    elwesso is offline Cadillac Owners Master
    Automobile(s): 2005 CTS-V, 1994 Infiniti Q45
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    Jan 2003
    Location
    Indiana
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    Re: Hard Starting STS

    Welcome to the forums, thanks for signing up

    I think its a clogged fuel filter..... IF it hasnt been replaced within the last year or so (or within 20k miles) its probably clogged up.... My car had a similar problem (under the previous owner) and a new filter fixed it, only having to replace the pump later due to the clogged filter burning it up!!!

    Id replace the filter and go from there (its cheap and easy, and a good idea also!)

  4. #3
    maydog's Avatar
    maydog is offline Cadillac Owners Fanatic
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    Location
    Minnesota
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    Re: Hard Starting STS

    Search for discussions regarding the fuel pressure regulator.

  5. #4
    elwesso's Avatar
    elwesso is offline Cadillac Owners Master
    Automobile(s): 2005 CTS-V, 1994 Infiniti Q45
    Join Date
    Jan 2003
    Location
    Indiana
    Posts
    7,668

    Re: Hard Starting STS

    Yes.... I keep forgetting that little thing.... It is somewhat troublesome for the Northstar!!!

  6. #5
    lido is offline Cadillac Owners Member
    Join Date
    Sep 2003
    Location
    so.ca.
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    62
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    29

    Re: Hard Starting STS

    Quote Originally Posted by elwesso
    Yes.... I keep forgetting that little thing.... It is somewhat troublesome for the Northstar!!!
    Try the Fuel Pressure Regulator.It fixed mine.

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