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Citroen ZX 1.9 Non Turbo 1997 - Stops when warm #

Posted by Tommy Mac on August 15, 2011, 11:40 pm

Year of Manufacture *: 1997 /
Engine Size and Code *: 1.9 non turbo
( Optional ) ECU Type: not known
( Optional ) Scanner Used: solus
( Optional) Fault Codes: no info available on scanner

When cold starts and runs ok, as it warms up engine stops. Stop is clean ie no warning such as judder or misfire. Time between start and stop is getting shorter. Held engine at 3000 rpm stops same as idle, let it cool down (1/2 hour average) starts fine, no problems until warms up.
Been looking for a electrical problem, all feeds look ok, powered stop valve direct, replaced both relays and stop valve on advice with no change. About to remove pump and send away. has anyone had this problem in the past.
T.I.A
Tommy

Re: Citroen ZX 1.9 Non Turbo 1997 - Stops when warm #

Posted by Bryan Smith <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT5330' width='330' height='300' border=0 style='border:none;'> on August 18, 2011, 8:40 am, in reply to "Citroen ZX 1.9 Non Turbo 1997 - Stops when warm #"
Bryan Smith

Hi Tommy,
With virtually no info it's going to be difficult for anyone to help you. By what your describing I assume it's got an injection pump with a stop solenoid on it? Try removing the piston from inside the solenoid and that will confirm very easily if it's electrical or otherwise.
HTH's
Bryan.

Re: Citroen ZX 1.9 Non Turbo 1997 - Stops when warm #

Posted by James Eardley on August 19, 2011, 12:33 pm, in reply to "Re: Citroen ZX 1.9 Non Turbo 1997 - Stops when warm #"
Message modified by board administrator August 23, 2011, 8:34 am

I was working on a fork lift with similar problems it might be a long shot but the only way I could get it to start when warm was to pour cold water over the rotor head (the back of the pump where high pressure pipes come off) I think that is what it's called anyway.

I think the pump must not have been able to create enough pressure to open injectors after heat expansion.
The company didn't want to buy a new pump or have theirs repaired so they have strapped a watering can to fork lift

HTH

James

Re: Citroen ZX 1.9 Non Turbo 1997 - Stops when warm #

Posted by John Chadwick <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1524' width='330' height='300' border=0 style='border:none;'> on August 19, 2011, 7:52 pm, in reply to "Re: Citroen ZX 1.9 Non Turbo 1997 - Stops when warm #"
John Chadwick

you looked at crank sensor thay can go open circuit when hot an then be ok when cold

Re: Citroen ZX 1.9 Non Turbo 1997 - Stops when warm #update

Posted by Tommy Mac <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT5542' width='330' height='300' border=0 style='border:none;'> on August 23, 2011, 11:18 pm, in reply to "Citroen ZX 1.9 Non Turbo 1997 - Stops when warm #"
Thomas McDonough

Hi thanks for the replies, Bryan have tried removing plunger and spring. still cuts out, also ignition switch will still stop engine.
James not tried water, interesting idea.
John the C.A.S appears to be for rev counter only,car will start and run ok without it.
Working on it today, just as it cut out my phone rang so i jumped out to answer it forgetting to switch the ignition off. Went back to it about half an hour later, would not start, switched ignition off for half an hour, starts and runs, so i'm thinking electric. Trying to find wiring diagram, there are wires going into the back of the pump so not ruled that out yet.
Thanks
Tommy

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