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Author Topic: She's a-shakin'  (Read 14958 times)

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GTRS Fiero

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She's a-shakin'
« on: November 02, 2020, 07:55:49 am »
Well, for the first 249 miles after leaving the BBQ restaurant, everything seemed OK, with the exception of one small thing: in a construction zone, someone hit a deer.  The deer fell in the one driving lane.  There was no shoulder.  I could drive over the deer with the wheels, or stradle the deer.  I chose the later.  Lots of things under my Fiero hit the deer, but everything seemed OK.  I stopped to get fuel at a Marathon.  As I was accelerating to merge back onto the highway, my Fiero started shaking, as if running over rumble strips.  I eased off the throttle, and merged.  The shaking stopped as soon as I let off the throttle.  Thereafter, whenever I accelerated more than slightly, the shaking returned, but no shaking on maintaining my speed.  About this time, my engine started to sound like an old VW.  I ran the next 276 miles this way, then stopped for fuel.  Thinking maybe I had a bad tank of gas, I filled up, then did a brief test. The shaking occured even at low speeds, but stopped when the transmission upshifted.  I drove home.

I was too tired to deal with this last night.  I ate, put my stuff away, took out the trash (Monday pickup), and went to bed.

Fierofool

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Re: She's a-shakin'
« Reply #1 on: November 02, 2020, 10:15:05 am »
Usually when you get a vibration in acceleration or deceleration,  it's a bad bearing in the driveline.  It may have damaged the CV or tripod bearing.
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Wreck It Ralph

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Re: She's a-shakin'
« Reply #2 on: November 02, 2020, 04:26:44 pm »
Also can be a shudder in your transmission.
1988 Fiero Base 4cyl 5spd.
1986 Fiero GT ... Parting out. Let me know if you need something.

GTRS Fiero

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Re: She's a-shakin'
« Reply #3 on: November 02, 2020, 07:11:51 pm »
Usually when you get a vibration in acceleration or deceleration,  it's a bad bearing in the driveline.  It may have damaged the CV or tripod bearing.

Well, it does this while stopped, also, but the axles were my first thought.

Wreck It Ralph

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Re: She's a-shakin'
« Reply #4 on: November 02, 2020, 07:21:34 pm »
Could be missing because of the air leak. I was thinking that you should try the block off plate fir a bit to see if any of your problems go away. Just a thought.
1988 Fiero Base 4cyl 5spd.
1986 Fiero GT ... Parting out. Let me know if you need something.

GTRS Fiero

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Re: She's a-shakin'
« Reply #5 on: November 02, 2020, 07:24:25 pm »
I considered that.  The left axle seems to have some play.  It was new, 3 years ago.  Both axles were.

TopNotch

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Re: She's a-shakin'
« Reply #6 on: November 02, 2020, 09:24:20 pm »
When your car has as many miles as my yellow Fiero, with nothing done except front shocks and rear bearings, you tend to ignore a few shakes. How far, you ask? Let's just say that it's on it's way back from the moon.
The more complex the mind, the greater the need for the simplicity of play.

GTRS Fiero

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Re: She's a-shakin'
« Reply #7 on: November 02, 2020, 09:26:31 pm »
My vehicles may not look like much, but I expect them to be mechanically sound.

Fierofool

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Re: She's a-shakin'
« Reply #8 on: November 02, 2020, 10:02:36 pm »
If it's shaking when it's stopped, I would look at an ignition problem.  My truck is the same way.  Shakes at idle and that's likely due to a skip.  I've read up on it and even a bad PCV valve can cause my truck to do this.  There were lots of possible causes but it didn't mention bad wires, plugs, coil pack or injectors.  Go figger. 
There are three kinds of men:

1.    The ones that learn by reading.
2.    The few who learn by observation.
3.    The rest of them have to pee on the electric fence and find out for themselves.    Will Rogers

GTRS Fiero

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Re: She's a-shakin'
« Reply #9 on: November 02, 2020, 10:12:03 pm »
I want to get the vacuum leak and axles fixed, then see what I have.

Wreck It Ralph

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Re: She's a-shakin'
« Reply #10 on: November 02, 2020, 10:13:41 pm »
I want to get the vacuum leak and axles fixed, then see what I have.

A beautiful amazing car... may or may not be running perfectly but hey, look on the bright side, it looks great sitting still too. 😉
1988 Fiero Base 4cyl 5spd.
1986 Fiero GT ... Parting out. Let me know if you need something.

GTRS Fiero

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Re: She's a-shakin'
« Reply #11 on: November 02, 2020, 10:17:29 pm »
Thanks, but I want it right.  It deserves to be driven.

Wreck It Ralph

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Re: She's a-shakin'
« Reply #12 on: November 02, 2020, 10:20:18 pm »
I feel ya. You will find my humor... bad... just really bad. 😂

Wish you lived closer. I’d love to help you fix it. I’m like an alligator, once I bite down on a problem I don’t let go. Many a night I have found myself still working at 11pm because I don’t want to give up.
1988 Fiero Base 4cyl 5spd.
1986 Fiero GT ... Parting out. Let me know if you need something.

GTRS Fiero

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Re: She's a-shakin'
« Reply #13 on: November 02, 2020, 10:22:11 pm »
Me, too.

GTRS Fiero

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Re: She's a-shakin'
« Reply #14 on: November 16, 2020, 05:39:09 pm »
Thus far, replacing the half shafts seems to have solved the shaking.