95 Seville stumbles on acceleration
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Cadillac Seville / Cadillac Eldorado Forum Discussion, 95 Seville stumbles on acceleration in Past Cadillac Vehicle Discussion; My Cadillac has been to the dealership and to transmission specialist and both say they don't know what's wrong. No ...
  1. #1
    youngjames1 is offline Cadillac Owners Member
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    95 Seville stumbles on acceleration

    My Cadillac has been to the dealership and to transmission specialist and both say they don't know what's wrong. No codes besides the security light on the dash that comes on every now and then. I can't accelerate around a bend at all. I changed the spark plugs ,fuel filter ,air element is dirty little. I checked my fuel pressure at the schroeder valve and that seems to be fine. I been reading the chilton Manuel that I have and still don't know. I was thinking maybe the catalytic converter maybe?? Or maybe the spark plug wires??

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    83CADMAN's Avatar
    83CADMAN is offline Cadillac Owners Fanatic
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    Re: 95 seville stumbles on acceleration

    Bad Gas maybe? The N* needs its octane.
    I'm rather surprised that a Caddy dealership couldn't diagnose the problem!
    They would have checked all the obvious things like fuel pressure, exhaust backpressure, air filter etc.

  4. #3
    youngjames1 is offline Cadillac Owners Member
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    I know I'm surprised the caddy dealership couldn't either but I was thinking it might be the TPS sensor or the throttle body somewhere in there?

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    Submariner409's Avatar
    Submariner409 is offline If it won't run, stick on fender vents
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    Re: 95 seville stumbles on acceleration

    The Chilton manual is useless for your car - far too generic. You need a real GM/Helm service manual. eBay.

    You're way in the wrong Forum. This is going to FWD Seville.

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    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
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    Re: 95 Seville stumbles on acceleration

    Quote Originally Posted by youngjames1 View Post
    I can't accelerate around a bend at all.
    I have never heard of this in the Sevilles, but it is common in the early '90s Devilles. The tank baffles come loose and when in a turn (with less than 1/4 tank of fuel) centrifugal force sloshes the fuel to one side, the pump sucks air and the engine starves out.

  7. #6
    youngjames1 is offline Cadillac Owners Member
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    95 seville sls stumbles on acceleration

    Getting worse by the week it seems?. I don't know if it's the TPS or intake manifold leak. If I drive slow its ok. I took it to the dealership caddy and they said mystery problem they don't know where to start. Aamco tranny specialist said no codes couldn't find anything other than I need new back brakes and I have a bent front right axle so I took care of that. They thought that a bent front right rim could cause that but I rotated the tires and same thing. I changed out fuel filter gas pressure at railing is good new spark plugs don't know what could make my car shudder like that. Also around a bend I can't accelerate or the shudder occurs ???

  8. #7
    youngjames1 is offline Cadillac Owners Member
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    Wrong forum ok. So maybe plug wires.

  9. #8
    youngjames1 is offline Cadillac Owners Member
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    My Seville sls shudders on acceleration also I changed plugs but not wires maybe I need the same new wires?

  10. #9
    sts 03's Avatar
    sts 03 is offline Cadillac Owners Connoisseur
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    Quote Originally Posted by youngjames1
    My Seville sls shudders on acceleration also I changed plugs but not wires maybe I need the same new wires?
    Maybe CV axle

  11. #10
    Submariner409's Avatar
    Submariner409 is offline If it won't run, stick on fender vents
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    Re: 95 Seville stumbles on acceleration

    Identical threads merged and posts #8 and #9 moved from similar thread moved: Please do not hijack threads.

  12. #11
    cadillac kevin's Avatar
    cadillac kevin is online now Cadillac Owners Master
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    Quote Originally Posted by sts 03

    Maybe CV axle
    Thats what I'm thinking.
    Does it only not accelerate when turning hard left or right from a stop or whenever you turn the wheel any amount?

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    youngjames1 is offline Cadillac Owners Member
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    Quote Originally Posted by cadillac kevin

    Thats what I'm thinking.
    Does it only not accelerate when turning hard left or right from a stop or whenever you turn the wheel any amount?
    My problem was as simple as spark plug wires

  14. #13
    sts 03's Avatar
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    Yeah vibration on acceleration is usually CV axle.

  15. #14
    youngjames1 is offline Cadillac Owners Member
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    No the spark plug wires did not help same problem still occurring. Cannot find solution. Sorry about the whole thread deal I have no clue how to navigate thru this give a break submariner


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    MoistCabbage's Avatar
    MoistCabbage is online now Cadillac Owners 10000+ Posts
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    I assume you haven't pulled your codes?

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