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Posted
Hi all,I'm having a complete nightmare of a time diagnosing a fault on my parents 1400 LX (petrol). I brought this car for them as a run around as their previous Xsara was written off when a council truck backed into it at speed! Their previous model was a 1.9D on a 98 R reg,and I might add that it was the most reliable and rott free car they have ever owned! Hence why we went down the Xsara route again although this time being a 1400 petrol and the phase 2 model. Anyway,after about 2 weeks of ownership the timing belt snapped so I sourced a new engine with only 55k on it for £120,changed the timing belt and tensioner,water pump,oil and air filter and spark plugs before putting the engine in,I also used the old inlet manifold and all the sensors off the old engine because I knew they all worked,anyway,we started the car after fitting the new engine and it seemed ok,only problem is when you open the throttle it hesitates really badly like it's choking up and trying to suck to much air in,it's almost impossible to drive how it is because it's just choking up! If you keep your foot down it will rev eventually but not until it's coughed and spluttered a bit! There are no fault codes coming up on the diagnostic machine,no vacuum leaks or anything like that,we've changed the coil pack as well as other various sensors,inspected the inlet manifold for cracks too but can't find anything wrong! No engine light on or abnormal temperature readings either,when sitting there on idle the engine will be idling rough one minute then will just change and be sweet as a nut! When it does eventually rev hard it doesn't smoke at all,we've also replaced the cat as we thought it may be blocked! We really are stumped on this one! Anyone had a similar experience or know of any other reason why it would run like this? Any help would be massively appreciated!
Posted

If you used the injectors from the replacement engine or new ones, then I think you would need to program the ecu with the codes off the injectors. But using the original ones this would not be needed. Do not throw the ones away though from the replacement engine since there may be nothing wrong with them.

Posted
I've just removed the injectors from the original engine,I'm going to fit them tomorrow and see what happens,will update tomorrow and let you know the outcome.
Posted

If possible I would fit the injectors in the same cylinders as they were removed from in case each one has a different code number - however, a check in the C3 Haynes manual makes no mention of coding so possibly it does not apply. Only says to use a bit of oil on the seals to help fitting.

 

On our 2003 C3 1.4 petrol, for some reason Citroen numbered the cylinders from the gearbox end, so if you do any diagnostic checks and cylinder numbers come up, it is possible the number 1 cylinder could be at the gearbox end.

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