Xantia diesel. Over reving for the first 3-4 mins.

London luke · Unread post by **London luke** » 26 Jan 2006, 23:38

Let me explain..... When the suspension et chad raised and it time to drive off. I change gear and the car keeps reving??? Its like the auto choke ?? etc is causing the revs to rise. Bit dangerous as I have to brake to slow th ecar down afte rchanging gear. Stops after a few mins..

Cheers

AndersDK · Unread post by **AndersDK** » 27 Jan 2006, 01:13

Mr Luke -

Have your accelerator cable & linkage checked. I believe it is a simple problem with a stuck cable or a slack return spring.

There is NO choke on a diesel - so this can not be the problem.

mezuk04 · Unread post by **mezuk04** » 27 Jan 2006, 07:51

Like Anders says there is not choke but it still got me thinking of my ownership with the petrol zx reflex with manual choke, the choke puller (inside the cabin) kept coming off the cable and i was driving home from sheffield college with well constant revs.....now that was one interesting drive home....those brakes didnt get half used that day

jeremy · Unread post by **jeremy** » 27 Jan 2006, 09:40

I agree with all thats been said - but had another problem with the ZX 1.9D which would seem to discover hidden power at times - pedal was getting caught in the floor mat!

mezuk04 · Unread post by **mezuk04** » 27 Jan 2006, 09:41

LMAO at Jeremy...Same here!!!!!

London luke · Unread post by **London luke** » 27 Jan 2006, 09:49

No choke !!! That on less thing to worry about then !!

I will check obstructions etc. But I am sure there are none. It stops within 3 mins etc. Doesnt idle faster when not moving.. only after changing gear when I drive down the road

Unread post by **Peter.N.** » 27 Jan 2006, 11:21

Do we know what year Xantia it is? If its a late one and has electronic management, it could be a problem there. If not as previously stated, something mechanical sticking. The only other possibility is air getting into the fuel system.

London luke · Unread post by **London luke** » 27 Jan 2006, 21:38

stevenlizuk · Unread post by **stevenlizuk** » 28 Jan 2006, 13:02

My 2.1td did this for a while and it turned out to be a temp sensor.
When the sensor died the ecu assumed the engine was always cold and pumpeed in extra fuel to compensate.

Might be worth a look.

Cheers

Steve

London luke · Unread post by **London luke** » 06 Feb 2006, 21:59

Its getting worse!

I looked tonight . I notice there is a "Damper" fitted to the throttle body to act as a "return spring" ?? maybe this isnt working. Its slow to Pull back onto the idle stop.

Help !!

Unread post by **Peter.N.** » 07 Feb 2006, 08:48

Those dampers dont generally work after a few k miles, I would try disconnecting it, you wont notice much difference, except it might cure the problem! It doesn't act as a return spring, there is a seperate one round the throttle cable, its just to damp sudden movement, to make acceleration smoother.

Kowalski · Unread post by **Kowalski** » 07 Feb 2006, 12:51

Peter.N. wrote:Those dampers dont generally work after a few k miles, I would try disconnecting it, you wont notice much difference, except it might cure the problem! It doesn't act as a return spring, there is a seperate one round the throttle cable, its just to damp sudden movement, to make acceleration smoother.

I blamed my damper for a sticking accelarator and took it off but then the accelarator kept sticking. It turned out that the plastic liner in the cable was worn through in places and that the cable was frayed too. I still haven't put the damper back on, I probably should

London luke · Unread post by **London luke** » 07 Feb 2006, 17:24

I put some lube on the throttle body. And played with the damper a bit. Today I had no problems.... So I reccon its not a electrical problem etc.

Cable looks ok.... but i will have to see.

davehughes · Unread post by **davehughes** » 07 Feb 2006, 21:08

Luke, if its limited to 3 mins it could be temp controlled. If its an earlier Xantia there is a Waxstat that pulls a cable to give a higher idle speed. It then releases when the engine is warm. Its on the back of the fuel pump.
I only know about it because mine was doing the opposite when cold!!!
When I had the cambelt changed last sat it suddenly corrected itself

Still going to lube it up this weekend though

Talk to the other guys on the forum. I had a thread about it a couple of weeks ago but can't remember the title

Good luck

Dave

johnway · Unread post by **johnway** » 07 Feb 2006, 21:12

Hello,
Probably a weak return spring on the diesel pump - fixed mine with an additional spring on the arm - throttle now a bit heavy but the engine speed drops when foot lifted!! Must get around to fitting a new return spring this year!! Quite right was has been said about the damper, although I did try putting a spring on this - slowed engine speed down but couldn,t open throttle fully - great economy!!
Regards,
John.

French Car Forum

Xantia diesel. Over reving for the first 3-4 mins.

Xantia diesel. Over reving for the first 3-4 mins.

Stuck throttle