Omega Owners Forum

Please login or register.

Login with username, password and session length
Advanced search  

News:

Search the maintenance guides for answers to 99.999% of Omega questions

Pages: [1] 2  All   Go Down

Author Topic: rev counter  (Read 4675 times)

0 Members and 1 Guest are viewing this topic.

pauls

  • Omega Baron
  • *****
  • Offline Offline
  • Gender: Male
  • By the sea minehead
  • Posts: 2091
    • Bmw x3
    • View Profile
rev counter
« on: 03 July 2015, 19:23:07 »

What controls the movement of the rev counter is it electrical or wire. I ask because sometimes it jumps of the line and sometimes it doesnt. Dash is seated correctly. Everything else on the dash is fine
Logged
..

chrisgixer

  • Omega Baron
  • *****
  • Offline Offline
  • Woking ham
  • Posts: 2616
  • Banned
    • Irmscher 3.2 Elite lpg
    • View Profile
Re: rev counter
« Reply #1 on: 03 July 2015, 19:36:18 »

Thought this was one of the "battery symptoms?"

It's electronic, from abs sensors on drive shafts I think.
Logged

pauls

  • Omega Baron
  • *****
  • Offline Offline
  • Gender: Male
  • By the sea minehead
  • Posts: 2091
    • Bmw x3
    • View Profile
Re: rev counter
« Reply #2 on: 03 July 2015, 19:38:56 »

Thought this was one of the "battery symptoms?"

It's electronic, from abs sensors on drive shafts I think.

This is what iam trying to figure out. Because one day its fine and next day its jumping. It also seems to tie in with the gearbox thing as well
Logged
..

chrisgixer

  • Omega Baron
  • *****
  • Offline Offline
  • Woking ham
  • Posts: 2616
  • Banned
    • Irmscher 3.2 Elite lpg
    • View Profile
Re: rev counter
« Reply #3 on: 03 July 2015, 19:42:00 »

Right, so bettery didn't fix it then. :(
Logged

05omegav6

  • Guest
Re: rev counter
« Reply #4 on: 03 July 2015, 19:55:07 »

Could be an alternator voltage issue :-\

On the V6 rev counter could be either alternator or crank sensor driven :-\

ABS sensors feed speedo :y
Logged

pauls

  • Omega Baron
  • *****
  • Offline Offline
  • Gender: Male
  • By the sea minehead
  • Posts: 2091
    • Bmw x3
    • View Profile
Re: rev counter
« Reply #5 on: 03 July 2015, 20:06:33 »

Right, so bettery didn't fix it then. :(

No it didnt  :'( but I still believe its electrical fault.  I surpose next step is to get alternator tested. As stated before had a look at kevin woods thread but no real answer from it.

Logged
..

pauls

  • Omega Baron
  • *****
  • Offline Offline
  • Gender: Male
  • By the sea minehead
  • Posts: 2091
    • Bmw x3
    • View Profile
Re: rev counter
« Reply #6 on: 03 July 2015, 20:13:30 »

On the subject of electrical,  I noticed the black rubber insulation on the thinner of the two wires going to the starter motor was split and inside it had silver insulation. I couldnt see any wire split though so just wrapped it in insulation tape. Would this cause a issue

if I want to mess with this wire would it be wise to take the life off the battery.
Logged
..

BazaJT

  • Omega Lord
  • *****
  • Offline Offline
  • Gender: Male
  • SLady bitshorpe N.Lincs.
  • Posts: 9086
    • Omega 3 litre Elite
    • View Profile
Re: rev counter
« Reply #7 on: 03 July 2015, 21:20:17 »

I would say when dealing with anything alternator related-on the electrical side anyway-I'd always disconnect the battery.Unless of course you're checking its output!
Logged

Bigron

  • Omega Baron
  • *****
  • Offline Offline
  • Gender: Male
  • Witham, Essex
  • Posts: 4808
    • Omega 2.6 V6 Auto '51 Reg
    • View Profile
Re: rev counter
« Reply #8 on: 03 July 2015, 22:13:43 »

pauls, I may have said this before (maybe not to you), but Kwik-Fit, ATS, Halfords and others will do a free crank/capacity test on your battery and a charging test on your alternator; that will at least confirm or eliminate a few things for you.

Ron.
Logged

pauls

  • Omega Baron
  • *****
  • Offline Offline
  • Gender: Male
  • By the sea minehead
  • Posts: 2091
    • Bmw x3
    • View Profile
Re: rev counter
« Reply #9 on: 03 July 2015, 22:35:18 »

pauls, I may have said this before (maybe not to you), but Kwik-Fit, ATS, Halfords and others will do a free crank/capacity test on your battery and a charging test on your alternator; that will at least confirm or eliminate a few things for you.

Ron.

yes you have said before and iam going down in the morning. :y
Logged
..

chrisgixer

  • Omega Baron
  • *****
  • Offline Offline
  • Woking ham
  • Posts: 2616
  • Banned
    • Irmscher 3.2 Elite lpg
    • View Profile
Re: rev counter
« Reply #10 on: 04 July 2015, 00:09:53 »

Yes brain fade on the abs sorry.

Believe I did suggest crank sensor as a possible a while back. Seem to remember a post where the c/s was changed and the Rev counter behaved there after.

Really needs some proper diags though tbh. Might be worth a trip to Brackley. ...?
Logged

Rods2

  • Omega Lord
  • *****
  • Offline Offline
  • Gender: Male
  • Sandhurst Berkshire
  • Posts: 7604
    • 1999 3.0 Elite Estate
    • View Profile
Re: rev counter
« Reply #11 on: 04 July 2015, 01:36:58 »

Could it be an ABS ECU problem?
Logged
US Fracking and Saudi Arabia defending its market share = The good news of an oil glut, lower and lower prices for us and squeaky bum time for Putin!

Shallow Al

  • Junior Member
  • **
  • Offline Offline
  • Gender: Male
  • Lymington, Hampshire.
  • Posts: 218
    • 3.0 Litre Elite.
    • View Profile
Re: rev counter
« Reply #12 on: 04 July 2015, 02:05:56 »

Could it be an ABS ECU problem?

My ABS ECU went pop recently, and it also logged gearbox fault, replacement ECU cleared it all up.
So could be something along those lines??
Logged
I used to know everything. Then I got married.

Shallow Al

  • Junior Member
  • **
  • Offline Offline
  • Gender: Male
  • Lymington, Hampshire.
  • Posts: 218
    • 3.0 Litre Elite.
    • View Profile
Re: rev counter
« Reply #13 on: 04 July 2015, 02:08:28 »

Worth a look at by a Tech 2 perhaps.?
Logged
I used to know everything. Then I got married.

chrisgixer

  • Omega Baron
  • *****
  • Offline Offline
  • Woking ham
  • Posts: 2616
  • Banned
    • Irmscher 3.2 Elite lpg
    • View Profile
Re: rev counter
« Reply #14 on: 04 July 2015, 07:54:06 »

Iirc the stutter/pause from the Rev counter is from tickover rpm to ~1200rpm and is intermittent. It occurs in neutral at standstill and in gear. (Again iirc) so if it's doing it at standstill there wouldn't be any abs signal anyway.

If it was just this fault along I'd try swapping the clocks out for a know good one. BUT there are other faults that occur at the same time. There is an intermittent lag in power at roughly 5k ish rpm like it's about to change gear but doesn't. I don't think it's a miss fire as its too subtle and smooth, it's like a partial lift off from wide open throttle. Except the pedal is flat to the floor.

There is , I believe, a gearbox shift point be fudllmemt as well that I don't think I've experienced having driven it.


Maybe Paul could confirm?

But what could affect those three things?

To my simple mind, Crank sensor "could" affect all three. But then so could gear box ecu. (I have a spare here Paul if you want to try it) I haven't seen anything to suggest speed signal,(again apologies I was confusing my tacho issues with Pauls earlier) but then I have way too little experience with electrical diagnostics to be sure of anything.

It really does need a chat with tech2. And quite possibly a damn good talking to ;D



Logged
Pages: [1] 2  All   Go Up
 

Page created in 0.02 seconds with 21 queries.