peugeot406 hdi 110 estate - loss of power - mushypeas

while driving the speedometer suddenly drops and theres a distinct lack of power, untill it kicks back in again this happens a few times per journey . recently i fitted a new middle and tail section exhaust which made the problem disappear for four days then it reappeared again, any ideas please thanks

peugeot406 hdi 110 estate - loss of power - Peter.N.

Probably the speedo sensor which is mounted on the diff housing just above where the o/s drive shaft enters, reasonable job, only held on with one bolt and a plug. Available on ebay for not to much money.

peugeot406 hdi 110 estate - loss of power - mushypeas

thanks a lot will check that out will let you know how i get on mushypeas