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Northstar Engines and System Technical Discussion Discussion, weird acceleration in Cadillac Engine Technical Discussion; Let me make a follow-up to my original post -- I sent that before I should have. The traction control ...
  1. #16
    jadcock's Avatar
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    Let me make a follow-up to my original post -- I sent that before I should have.

    The traction control system (let me abbreviate it TCS) has two priority levels, traction and directional control. At low speeds, if wheel slip is detected, it will maximize traction. There is usually no torque management occuring at low speeds, just brake modulation. At high speeds (above 50 mph), if wheel slip is detected, it will maximize directional control. There is no brake modulation at high speeds, only torque management.

    The TCS engages only when the system detects one or both front wheels is losing traction. When excessive slippage occurs, the system will engage.

    If the Eldo in question was traveling above 50 mph, it is possible that torque management was engaged. For the record, it can cut fuel (the spark continues) to as many as five of the eight cylinders. I can feel the torque management when I'm racing up or down a curved interstate entrance. If it's wet, I can feel the front of the car push a little bit and the tone of the engine will sometimes change and I can feel the front of the car pulling back in the direction that I'm steering very slightly.

    If you are going fast (above 50 mph), this may be the cause of your engine symptoms. If at a slower speed, I would guess it's something else. It just doesn't sound like the TCS in action.

  2. #17
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    But even when the brakes are applied in the lower speed TCS, wouldnt it give it sort of that same feeling-- that the engine is struggling?

  3. #18
    Devil_concours is offline Cadillac Owners Connoisseur
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    if that is the case then i need to get my car checked. It was doing something similar to what he's describing (in the snow).

  4. #19
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    I dont think so, i think that the car is just doing its job.

  5. #20
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    could this be a tranny shudder? i know 94/95 tbirds had a simmilar problem so ford developed a new fluid that eliminated the problem.

    should i get the tranny flushed and see if that helps?

  6. #21
    jadcock's Avatar
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    When the brakes are applied, it'd sort of give the same feeling, but it'd be real apparent that it's modulating the brakes because of the rumbling of the ABS equipment. It's possible it may be something in the transmission. Have you pulled the codes from the vehicle?

  7. #22
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    it doesnt feel like the ABS cus when it does it when i accelerate ther eis no break noise. All i get is a surging kind of like when my little brother's 383 wasnt firing all 8 cylinders.

    how do i pull codes on a 95 (pre OBDII)

  8. #23
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    probelm solved.

    The pugs looke dlike the original plugs. they were all white ont he end and had gaps between .070 and .10!

    so i put new plugs in, and she runs like she is brand new.

    i also finally fixed all my deads lights while i was at the parts store. lol

  9. #24
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    DID YOU THROW AWAY THE OLD PLUGS???

    They are platinum tipped, and should last forever. Just re gap them, clean em up a little and theyll be as good as new. They should last the life of the car.

  10. #25
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    i kept them... but 2 of them have cracks in the ceramic on the necks with burn marks around the cracks. so Im guessing those two are no good.

    but i still have them.

  11. #26
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    yeah the screwed up ones will be trash, but keep the rest. What did you replace them with???

  12. #27
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    autolite copper clugs for 3 reasons: one they will work with the car, 2, they were cheap and i was short on cash today when the car started stalling from the bad plugs, and 3, i run them in everyhting and never had a problem with them.

  13. #28
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    Good enough for me......

  14. #29
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    I wonder if the constant use of traction control somehow overloaded the brakes and caused the engine to start cutting fuel. And somehow the lack of fuel caused the spark plugs to overheat and fail? That's interesting...sounds like severe damage to them if the insulators were cracked! Good call on replacing them. Elwesso's right -- they're platinum and should last essentially the life of the car. Mine are almost 112k miles old and the thing still lays waste to anything short of newer V8 Mustangs and Camaros.

    Speaking of which, I saw some ghettoed out '96 Mustang today...V6 model. Had the Altezza something taillights and wheels. His license plate said XTREM96. After I wasted him from one stoplight, I wanted to roll down my window and ask if that stood for "extremely slow 96".

  15. #30
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    Why didnt you, it would have been some punk kid anyway.

    OPPORTUNITY MISSED!!

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