48 Juddering and vibration The Engine and other mechanicals
Citroen XM Internet Reference Version 1.0 75
3/3/99
48 Juddering and vibration
1. the possible cause of a juddering/vibration on my 54,000 mile 1994 L Reg XM 2.0i Turbo, particularly
when pulling under power. Citroen agents have tried a drive shaft, new susp. sphere, speed sensor,
turbo electric valve, wheel balancing, wheel alignment, and suspension height settings. I‘ve also just
had to replace 4 tyres after 12,000 miles with (Pirelli agree) uneven wear; Pirelli say its not the materials
or manufacture....could this be linked to the juddering. I‘m getting desperate, but don‘t want to abandon
Citroens
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The problem is the ’92-’94 145 HP Turbo engine. The shape of the pistons, the computer and the head
cause this problem. Citroën changed the engine in Summer 1994 to a 150 HP Turbo engine.
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My 94 XM does not do it. Was yours a Manual or Auto? Maybe there is a Mapping problem in the ECU
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Mine was an auto, I am sure that it was a mapping problem and that a new software version would fix it
but have you ever tried to explain this sort of concept to a Citroen dealer?
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Mine is a manual.
The problem is always there but is worst when the engine is cold. Citroen say it’s not just a mapping
problem.
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