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[megaomega123]

Hi all.
Car was in today for ABS ECU change. I have a 2.5v6 manual and purchased a 2.6 abs unit, knowing that it may need to go on tech2. The mechanic decided that it would be better just to change the whole unit as opposed to just the ecu. He phoned me to say there was a problem, so I went to see.
The symptoms now are:
TC light remains on. ABS light goes out.
Engine Management light on.
Rev counter flicks between 5-7000rpm
Code says no rpm signal
Car does not start.

A lot more and different symptoms to standard ABS ECU failure.

Has something been unplugged somewhere? He did stretch the main ECU out of the way.
Does the ABS unit have differing setup if manual or auto. Extra rpm signal maybe?

Hope this is enough info for someone to diagnose. If anymore info needed just ask.
 

[RobG]

Hi all.
Car was in today for ABS ECU change. I have a 2.5v6 manual and purchased a 2.6 abs unit, knowing that it may need to go on tech2. The mechanic decided that it would be better just to change the whole unit as opposed to just the ecu. He phoned me to say there was a problem, so I went to see.
The symptoms now are:
TC light remains on. ABS light goes out.
Engine Management light on.
Rev counter flicks between 5-7000rpm
Code says no rpm signal
Car does not start.

A lot more and different symptoms to standard ABS ECU failure.

Has something been unplugged somewhere? He did stretch the main ECU out of the way.
Does the ABS unit have differing setup if manual or auto. Extra rpm signal maybe?

Hope this is enough info for someone to diagnose. If anymore info needed just ask.
 

If code is 0335 then it won`t start (crank sensor). Has your mechanic dislodged the CS connector.
Different config on manual & auto

[megaomega123]

[/quote]
If code is 0335 then it won`t start (crank sensor). Has your mechanic dislodged the CS connector.
Different config on manual & auto
[/quote]

Not sure of exact code as he just plugged in cheap reader which said no rpm signal.
I know the replacement abs unit came from a facelift 2.6 y26se. Not sure if it was manual or auto. Would this produce these symptoms if it came from an auto?

[CaptainZok]

A 31 no rpm signal is normal when the engine isn't running.

[megaomega123]

A 31 no rpm signal is normal when the engine isn't running.

True. I should have paper clipped it.

The rev counter only jumped around when he had the battery booster attached, as he flattened the battery trying to start it.

[tidla]

Replaced my abs unit last month. Part no of the replacement unit was the same but described as a unit taken from a 2.5.

Only replaced the electronic bit, a bit pointless to change the valve block.

I did expect issues, have found non.

Non start sounds more like crusty crank sensor wiring has given up after a nudge.

[malcy_p]

I had a slightly similar issue after changing my ABS/TC ECU last year - TC light on, multiple codes, rev counter all over the shop - http://www.youtube.com/watch?v=quz54rqVmvg

Turned out to be one or more poor connections in the big round connectors (X5 from memory....) next to the battery. I'd undone these to get access to the ECU. So I cleaned up the connectors with a fine needle file, made sure all the pins were seated and the problem went away.

I assume the new unit is a know good item?

/m.

[megaomega123]

The old unit has been put back in and back to normal. Intermittent failure. Cost me £301 for the privilege of not getting it fixed 

[symes]

I had a slightly similar issue after changing my ABS/TC ECU last year - TC light on, multiple codes, rev counter all over the shop - http://www.youtube.com/watch?v=quz54rqVmvg

Turned out to be one or more poor connections in the big round connectors (X5 from memory....) next to the battery. I'd undone these to get access to the ECU. So I cleaned up the connectors with a fine needle file, made sure all the pins were seated and the problem went away.

I assume the new unit is a know good item?

/m.

those plugs can throw gearbox/abs/ecu faults-I reckon heat opens the spade part-losing contact IMHO 

[Webby the Bear]

The old unit has been put back in and back to normal. Intermittent failure. Cost me £301 for the privilege of not getting it fixed 

omg £301 to put back your old part!!! was this a vx dealer?

[megaomega123]

The old unit has been put back in and back to normal. Intermittent failure. Cost me £301 for the privilege of not getting it fixed 

omg £301 to put back your old part!!! was this a vx dealer?

Surprisingly not. Just a single premises, local place. 8 hours labour

[Webby the Bear]

I appreciate they've spent a long time on it but £301? you expect that cost if they fix it! lol what do others think about this? 

[terry paget]

ABS faults are tricky! Not solved mine yet.

[dbug]

I appreciate they've spent a long time on it but £301? you expect that cost if they fix it! lol what do others think about this? 

Not the mechanics fault - swapped a part supplied by the owner!!  However 8 hours is a bit steep for abs ecu swap IME

[elitedave]

i tell him hes a pleb and i want money back hour and a half max to remove and refit ecu if that with many Coffey and fags and gasing
no way id pay for 8hours labour on that while he scratch his ass working what to undo

he dint know what he was doing

remover battery fuse box pass ress un do round connector plugs and any wires in way loosen nuts on abs unit and lift gently  get m8 to undo 4 tox bolts/screwed with flexible driver while you hold it up a bit on pipes

sould have done it your self