172 jerking when pulling off in 1st gear and slight juder when slowing down

[Terrydb]

guys when i pull of in 1st at slow speeds in my 172 the car jerks and then goes as normal also every now and then it wont go in to 1st or wont let me go in to reverse i have had the coil pack just done btw i have also had a new gearbox and clutch and when im slowing down the car jerks then as well but not through the brake pedal the brakes are also new can someone please help me with this

many thanks

terry

 

[Mr R.]

Let's get the story straight, you had a "used" gearbox fitted.

Id say it was the diff and id say that the box needs to come out and be rebuilt.

 

[Terrydb]

no since then i have had to have a new gearbox rebuilt

 

[Cub.]

As Scott said, could be the diff I am afraid.

 

[Terrydb]

ive literally just had a gearbox rebuilt last week tho

 

[-J-]

ive literally just had a gearbox rebuilt last week tho

Take it back to whoever rebuilt it?

You really either have been very unlucky with this car or have a total lack of mechanical sympathy and have managed to destroy another gearbox.

 

[Mr R.]

Wheel spinning up the road probably hasn't helped.

 

[Terrydb]

Wheel spinning up the road probably hasn't helped.

no your right it probably didnt i admit that but at the end of the day i am only human

 

[-J-]

So who rebuilt this one? Did they not offer warranty? What did they say when you called them?

 

[Mr R.]

no your right it probably didnt i admit that but at the end of the day i am only human

Fairplay sir.

 

[Terrydb]

So who rebuilt this one? Did they not offer warranty? What did they say when you called them?

local garage in Chelmsford he did offer a warranty on it it only really started judering last night so i have not called yet did look on here and a few people who seem to have the same problem have said mounts i just wanted to get a second opinion before i called the garage

 

[Terrydb]

small update which may help just drove my car when you don't use the accelerator and you move on the clutch bite there is no juddering however if you move off using the accelorator the juddering happens again

 

[Mr R.]

Could just be the clutch plate needs bedding in a bit.

Year's ago I have a clutch and flywheel replaced on my wife's classic mini.

It did the same thing, so I just pulled away sort of riding the clutch a few times and it was fine after that.

I don't mean launch it at 7k btw

 

[Terrydb]

Could just be the clutch plate needs bedding in a bit.

Year's ago I have a clutch and flywheel replaced on my wife's classic mini.

It did the same thing, so I just pulled away sort of riding the clutch a few times and it was fine after that.

I don't mean launch it at 7k btw

ok so move of using just the bite a few times ? ill give that a try

 

[Mr R.]

Id bring the revs up and pull away riding the clutch.

But tbh without seeing the car its a hard one to diagnose.