1997 2.1td reving problem HELP!!!

hi sometimes just after start up the engine revs from 10,000 to20,000 for a
short while then settles down and i can drive normaly.another problem is
from nowhere the engine goes to top revs this can happen anytime at
all,the only thing to do is hang on or switch off,please can someone help
me !!!

 

20,000rpm? Is this an F1 car or something?

D

 

SORRY im new at this i ment 1,000 to 2,000 revs

 

Check the damper on the throttle cable is working these usually stick when
old. They can be removed as they were just provided as an emissions aid.
Mike

 

hi MIKE thanks for the help,but my car has a fly by wire throttle and i
dont know where the damper is,,i know thrers one on the fuel pump

 

Hello

I had a very similar problem with my 1997 406 2,1 TD

When started from cold, the car would drive as a horse, which needed
to be broken in! After a while, when the engine was hot, the problem
disappeared. It would be back at the next cold start. Sometimes it
happened even when the engine was hot, but that was seldom. As the car
is quite powerful, it is quite a scary experience.

As you mention in one of your answers, the fuel system on these cars
is rather advanced. You have one solenoid for accelerating, one for
decelerating and one transmitter for telling the computer the position
of the speeding system between idling and full speed. Furthermore
there is one adjusting device, which handles the ignition timing and a
transmitter telling the computer what the timing actually is. The last
electric thing on the pump, is the stop solenoid.

On my pump it was the transmitter telling the computer about the
actual timing position, which was faulty. When you go to the garage
tell them that. Otherwise they will very likely try to sell you a
complete new pump, which will obviously solve your problem, but at
presumably at least 10 times the costs. The transmitter would cost in
the region of 120 to 140 pounds as it is 1500 danish kroner here in
Denmark. The item is quite small maybe 3*3*4 centimetres. It is a
Lucas part (as the rest of the pump). The numbers with which it is
marked with are:

9160-012-A
4495 0496 (forget about the 0496. I think this is the production date)
Made in the UK

It is placed on the side of the pump which is nearest the windscreen.
It is the only electrical thing on that side of the pump. In my case I
was not sure that a new item would solve the problem, as I had to
figure it out myself, so I bought a used pump, and just used only the
part in question. Finding a good used pump is however tricky, as it
might very well have he same fault. The best thing would be to arrange
with a garage to exchange the transmitter. Depending on the garage you
might get a deal where they take the item out again, and give you some
of your your money back, if it does not help. 140 Pounds is quite a
lot of money, but the alternative is not that promising either!
This fault is not easily found/verified on the OBD garage computers
(at least not the one I tried), so don't be fooled by that.

Good luck with the project. Please let me know if it helped!

Best regards
V6406
Denmark

 

Hello again


Try this link.
http://www.ilexa.co.uk/forum/index.php/topic,6064.0.html

I still think the feeler on the pump is your problem, but the link
might interest you anyway.

Regards
Thomas

 

HI thanks for all your help,but my problem was the temp sender on the side
of the cylinder head above the bellhousing ,it is green in colour and cost
£10.80 from my local pug dealer PART NO is P133878 It came the next day
took 5mins to fit and the reving dissapeared Again thanks for your help
and i hope this thread will help others

 

The first time I started the car after an engine replacement, it did this,
scared me s**tless, then idled normally after that and still does now, all I
can guess is that it was priming itself.