engine shudders

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news - 03 Dec 2003 20:50 GMT

my 91 shadows engine shudders on acceleration, i have replaced all the
engine mounts. any other suggestions how to stop this.

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Mark - 05 Dec 2003 04:15 GMT

Have you looked at axles?

> my 91 shadows engine shudders on acceleration, i have replaced all the
> engine mounts. any other suggestions how to stop this.

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Circuit Breaker - 07 Dec 2003 03:55 GMT

>> my 91 shadows engine shudders on acceleration, i have replaced all the
>> engine mounts. any other suggestions how to stop this.

> Have you looked at axles?

Exactly. Could even be the tires needing to be balanced. You don't say
(and there's really no way to compare anyway) how bad the vibration is...
But it's ONLY on acceleration?

Is it a seemingly random vibe or is it a steady, periodic one? If it's
periodic, I'd look at any rotating object: wheels, axles, transmission
innards, balance shafts (on the 2.2/2.5), crankshaft, harmonic balancer,
pulleys, a/c clutch, etc.

If it's random... hmmm.... is there any sound to go along with? Perhaps
a pinging sort of noise? Maybe the exhaust sounds a little louder than
normal or perhaps, oh, Idunno, any sort of noise really....

Too little info to go on.

K.I.T.

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tom - 07 Dec 2003 19:24 GMT

this shuddering happens every time i accelerate, but it only happens until
the car starts to move then it stops. i originally noticed it after the
lower engine mount came loose. i have since replaced all the engine and
trans mounts. the problem still persists. i thought that maybe there was
something additional in the mounts i needed to address

> >> my 91 shadows engine shudders on acceleration, i have replaced all the
> >> engine mounts. any other suggestions how to stop this.
[quoted text clipped - 17 lines]
>
> K.I.T.

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Circuit Breaker - 10 Dec 2003 03:28 GMT

> this shuddering happens every time i accelerate, but it only happens until
> the car starts to move then it stops. i originally noticed it after the
> lower engine mount came loose. i have since replaced all the engine and
> trans mounts. the problem still persists. i thought that maybe there was
> something additional in the mounts i needed to address

So, I figure that this shuddering is violent enough to make interior
decorations (console etc) rattle? Stops as soon as you get underway...

As for "something additional" in the mounts, there /is/ an alignment
procedure on some (many? all?) models. I suppose (although I don't
/know/) that it's possible for the shuddering to be related to a
maladjustment of the alignment. For example, you noticed it first when a
mount came loose... hence, the alignment was not held... could be the
same thing now, i.e., out of alignment. I'd check that. Look on the
mounts that are adjustable for paint scrapes - marks that show that a
mount bolt was in a different location or that some other movement has
happened.

If you let the engine idle, with the car in gear, and the brakes released,
so that the car will move, does it shudder or have any other signs of
roughness? Does it require a firm amount of acceleration as one would
have starting out from a stoplight, or is the amount used when pulling out
of a parking space enough to make it shudder?

HIH, but I'm running out of ideas ;-)
Good Luck

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tom - 17 Dec 2003 02:36 GMT

Thanks for the suggestion on the alignment of the mounts ill check. and yes
it does require a firm acceleration as from a stop light. I also have
noticed it when i am accelerating around a corner.

> > this shuddering happens every time i accelerate, but it only happens until
> > the car starts to move then it stops. i originally noticed it after the
[quoted text clipped - 23 lines]
> HIH, but I'm running out of ideas ;-)
> Good Luck

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KrystleAikens - 30 Dec 2006 00:24 GMT

>my 91 shadows engine shudders on acceleration, i have replaced all the
>engine mounts. any other suggestions how to stop this.

I am having the exact same problem with my 2004 Neon SXT. When I am in first
gear, I press on the gas to go, and it shudders until I get going. It's only
in first gear or reverse, but it's pretty violent if I try and get a decent
start out of first. All my mounts are fine, I had those checked out, and when
I filled my car with Mobil gas instead of the cheap brand, it was fine for a
few days, but now it's back. Did you figure out what was wrong with yours? I
added Dry Gas to my tank, going to see if that helps at all, I can't afford
to fix anything!!! Thanks

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