My 1992 1360cc Citroen ZX - Stalling, Rough Idle etc.

My 1992 1360cc Citroen ZX - Stalling, Rough Idle etc.

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Discussion

c4koh

Original Poster:

735 posts

251 months

Tuesday 6th March 2007
quotequote all
Wondered if anyone can help.

The engine runs fine when cold, but when warmed up, starts to idle erratically, stalls, and cannot maintain a rev range (e.g. hold the throttle at a position, the engine lurches around).

I have replaced the spark plugs, ECU, coolant sensor (x2 - one for the guage, one for the ECU I suppose), Lambda sensor, fuel injector [it's a monopoint injection].

(Thankfully all of the above off a donor car!)

I do not think it's spark related: when cold, or when warm and being 'good' the engine revs fine and pulls as good as it should.

The symptom seems fuel-related: it's not metering the right amount of fuel, or related to a sensor to meter this...

I'm looking to replace the entire unit [Bosch Monopoint MA3.0], as this includes the fuel-pressure reg. and the throttle position sensor, both which can't be changed independently (easily).

If anybody has any other clues to check, or had this before, would appreciate the feedback...

megamaniac

1,060 posts

223 months

Tuesday 6th March 2007
quotequote all
steve ,what colour are the plugs on the monopoint i have one you can try if the ey are the same .You can contact me through my profile if you want .
Paul

busta

4,504 posts

240 months

Thursday 8th March 2007
quotequote all
Sounds very similar to the stalling problems 306 GTI-6s suffer from! (see my GTI-6 running costs post and the gti-6 owners club forum.)