15 replies to this topic

[james_ly]

My speedometer has developed a mind of it's own over the past week, it started by cutting out over potholes etc, now progressed to winding up and down to 40mph when stationary.

 

First thing I'll try is some contact cleaner on the ABS sensors, anything else to check?

[Tony H]

You can recalibrate it by holding the trip button as you turn the key on.

 

My stack went mental on a really hot day at Zandvoort. Made it hard to know how fast I was driving on the way home as RPM and speed were all over the place. It went back to normal on its own.

[kipper]

Demonic Pocession? the only was is exorcism or pull the services fuse to reset?

[Zoobeef]

It takes its signal from the rear left hub.

[james_ly]

It takes its signal from the rear left hub.

 

Ah cool was planning to get that bearing replaced soon anyway.
 

[aquilaproejct]

If RPM was dodgy with Speedo I wouldn't suspect the hub. Two different inputs there. Sounds like a stack of connection problem

[Zoobeef]

Missed the bit where you said the RPM was all over too.

[Tony H]

It was me mentioned RPM, think James is speed only so probably on that one wheel.

 

Pin 22+23 on the ABS controller connector plug should have 1400 ohms resistance stationary.

[Sutol]

Had this and it was a loose battery connection

[Goodie]

Mine was the same, check the wiring and connection to the rear left hub and repair if broken. Failing that you can replace the rear hub.

[james_ly]

Had this and it was a loose battery connection

 

Definitely worth checking too.
 

[Craig S]

 

Had this and it was a loose battery connection

 

Definitely worth checking too.
 

 

 

Had this on the hoon got a throttle position error EML on with it too.

[aquilaproejct]

I had Speedo needle all over the shop. No abs warning light. After weeks of on and off stuffing around with wiring and diagnostics I figured it was the abs ecu. I confirmed it wasn't the hub by temporarily wiring in the rhs hub to the ecu to check. Replacing the ecu finally fixed it.

[ash_gt4]

I had Speedo needle all over the shop. No abs warning light. After weeks of on and off stuffing around with wiring and diagnostics I figured it was the abs ecu. I confirmed it wasn't the hub by temporarily wiring in the rhs hub to the ecu to check. Replacing the ecu finally fixed it.

Same here. From my research if there's no abs light it's not the sensor and likely the abs ecu

[Iain richings]

I’ve got the same problem with my car at the moment where the abs light is on and it cuts out on power when ideling going to look at the wires on the sensor

[aquilaproejct]

Yeah that sounds more like a wiring issue as you have abs warning light