Engine Stall
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Northstar Engines and System Technical Discussion Discussion, Engine Stall in Cadillac Engine Technical Discussion; I recently took my 99 SLS on a a road trip about 800 miles total. Everything went fine, until I ...
  1. #1
    enfuegophil1 is offline Cadillac Owners Member
    Automobile(s): 1999 Cadillac Seville SLS
    Join Date
    Oct 2006
    Location
    Saint Charles, Missouri
    Age
    35
    Posts
    17

    Engine Stall

    I recently took my 99 SLS on a a road trip about 800 miles total. Everything went fine, until I was about a half mile from my house and the car just died while sitting at a stop light for no apparent reason. I checked the codes and got P1599 (Engine stall, duh) and U1255 (communication error). Can anyone give me advice on what I could do or what the problem is, I definately can't let this keep happening.

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  3. #2
    Caddyshack100 is offline Cadillac Owners Connoisseur
    Automobile(s): 99STS,2004 Jeep Liberty Renegade,98 Deville RIP
    Join Date
    Nov 2005
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    1,054

    Re: Engine Stall

    Although, the 2000 and later Northstars had the most problems with the Crankshaft position sensors, it is not out of the realm for them to go on 99 and earlier, I had to replace mine on my 99STS, and it was doing the exact same thing you are describing. These parts are not expensive, but can be problematic to replace. Good luck and good hunting.

  4. #3
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
    Automobile(s): White Diamond '03 DHS (with DTS floor shift)
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    Jun 2004
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    Woodstock Ill.
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    Re: Engine Stall

    That is a classic symptom of the CKP sensor failure. Be advised, there are 2 "A" & "B" sensors. If you replace one, replace both. They are above the oil filter adapter.

  5. #4
    dp102288's Avatar
    dp102288 is offline Cadillac Owners Connoisseur
    Automobile(s): 1995 Pearl White Diamond Cadillac Eldorado ESC
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    Re: Engine Stall

    Damn the crankshaft position sensors suck. Honestly, a new thread every week about these things. Couldn't there have been a recall? it seems to have a high fail rate.

  6. #5
    eldorado1 is offline Cadillac Owners Connoisseur
    Join Date
    Feb 2004
    Location
    FL
    Posts
    2,250

    Re: Engine Stall

    No recalls unless it threatens your lives.

    A new car built by my company leaves somewhere traveling at 60 mph. The rear differential locks up. The car crashes and burns with everyone trapped inside. Now, should we initiate a recall? Take the number of vehicles in the field, A, multiply by the probable rate of failure, B, multiply by the average out-of-court settlement, C. A times B times C equals X. If X is less than the cost of a recall, we don't do one.

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