Weird grinding noise developing whilst engine braking

[DannyVTS]

Noticed this today as i throttled off for a corner, then it has done it in every gear since

Just a slight grinding noise, which dissapears when i re apply the throttle

Any idea's?

Danny

(Citroen Saxo VTS btw)

[firman]

Cant help you with your question but got to say between alarms, stale gym water bottles and grinding noises you are not having much luck are you! Hope you aint trying to sell it!

[Huntsman]

Engine mounts?

[hardcorehobbit]

firman said:

Cant help you with your question but got to say between alarms, stale gym water bottles and grinding noises you are not having much luck are you! Hope you aint trying to sell it!

You must have missed yesterdays thread.

So Danny, has it stopped smoking yet?

I had a 306 1.6 a few years ago and whenever I let off the throttle it would always make a grindy noise on the overrun. In my case, it was the gearbox. Does your noise change pitch or speed as you slow down more?

Try keeping hold of the gearstick when you let go, see if the vibrations are very severe.

[DannyVTS]

hardcorehobbit said:

firman said:

Cant help you with your question but got to say between alarms, stale gym water bottles and grinding noises you are not having much luck are you! Hope you aint trying to sell it!

You must have missed yesterdays thread.

So Danny, has it stopped smoking yet?

I had a 306 1.6 a few years ago and whenever I let off the throttle it would always make a grindy noise on the overrun. In my case, it was the gearbox. Does your noise change pitch or speed as you slow down more?

Try keeping hold of the gearstick when you let go, see if the vibrations are very severe.

Hi mate

I had 2 Saxo's, the smoking, stale water one has now sold thankfully thanks to everyone that helped out yesterday

Guess what? The fking power steering pump went on a Test drive, still managed to sell it though !

I'll try that suggestion

It has not been a lucky weekend for me tonight

Jackass 3d was good though

Huntsman said:

Engine mounts?

Never thought of that, hopefully

What you think that they are allowing the engine to relax too much?

[Si_steve]

I had a 306 diesel that did this, does it stop when you use the brakes? sound like its coming from the drivers side front wheel? I never really got to the bottom of it but ill have a think.

[DannyVTS]

Si_steve said:

I had a 306 diesel that did this, does it stop when you use the brakes? sound like its coming from the drivers side front wheel? I never really got to the bottom of it but ill have a think.

I think i tested it with the brakes and the noise still occurred. I will double check tomorrow

[NiceCupOfTea]

exhaust moving on hangers and vibrating against something?

[DannyVTS]

NiceCupOfTea said:

exhaust moving on hangers and vibrating against something?

VERY GOOD SHOUT.

The manifold/center section flange has come loose once before, i will look into that one

[DannyVTS]

Any more tips?

[DannyVTS]

Had the car on the axel stands tonight

Had no play in the driveshafts, started the car up and it was clear there was a problem

All the power was being transferred primarily to the near side wheel, the off side wasn't turning at all

I put the car into second gear and the off side wheel started to judder as if it wanted to move but couldn't - i could turn the wheel and it would spin for a short while but i then went to the near side wheel and managed to get it to stop in which a bit of grinding later the offside started to whirl around

I then went under the car and i could hear the noise but couldn't locate its origin

[DannyVTS]

bump

[DannyVTS]

up?

[petrolsniffer]

Does the noise go away when you put the clutch in?

If so could be input shaft bearing.

[NiceCupOfTea]

doogz said:

I take it it wasn't the exhaust, since it would be very random for it to only happen when you back off the throttle.

Not at all - engine shifts on its mounts when you come off the gas, exhaust moves on hangers and vibrates against something. Thus speaks the voice of experience.

[roverspeed]

could be the diff??

Not the same car, but when the diff went on my Eunos roadster, terrible grinding noise under light engine braking.

[DannyVTS]

I am almost certain its the diff

I presume the diff is in te gear box?

[DannyVTS]

Seems to be a common fault with te MA gearbox fitted to a variety of Puegeots and Citroens


For the cost of replacing the internals of the box i'd be as better off replacing it

Meh

[NiceCupOfTea]

I have no idea of the specifics of the Saxo! I was just reporting that exhausts can easily bang about, especially aftermatket ones. It's exactly what caused a rather alarming noise on my car that I thought was the gearbox dieing. I would have thought it worth checking before spending money. Happy to be proved wrong in this case!