Jump to content

Speedo stopped working


chas

Recommended Posts

Hi- My Peugeot Boxer 05 plate 2 litre motorhome speedo has stopped working. Wonder if any one as had this happen and what is involved to fix it. I guess the cable drive from the dial face to possible gear box is the culprit, I just like to know what could be involved before taking it to a garage, would the dash board instrument panel need to be disturbed ect. Thanks for any guidance .
Link to comment
Share on other sites

Modern speedometers are electonic, not mechanical.

 

A sensor (transducer) on the rear of the final drive/gearbox assembly, sends impulses to electronics and stepper motor in the instrument binnacle.

 

Possible causes of failure are transducer failure, faulty wiring, or a blown fuse that perhaps also supplies other items. On my Fiat, fuse F11 in the engine bay fusebox supplies the speedometer, among other items. A very possible cause of F11 blowing is a faulty oil vapour heater.

 

On my Fiat 2.8JTD, the oil vapour heater is fitted as a tee connection into the blow by hose above the starter motor, The blow by hose connects to the oil separator which is a roughly cuboid plastic box above the starter motor. If the oil vapour heater is faulty, in UK or warmer climates, a quick fix is to unplug it. The connector is only visible from underneath.

 

Alan

Link to comment
Share on other sites

Archived

This topic is now archived and is closed to further replies.

×
×
  • Create New...