Omega Owners Forum

Please login or register.

Login with username, password and session length
Advanced search  

News:

Please check the Forum Guidelines at the top of the Newbie section

Pages: [1]   Go Down

Author Topic: auto tractor stalling  (Read 1525 times)

0 Members and 1 Guest are viewing this topic.

hoofing it

  • Omega Knight
  • *****
  • Offline Offline
  • Gender: Male
  • Posts: 1556
    • View Profile
auto tractor stalling
« on: 17 August 2010, 21:38:14 »

Well this is starting to become a saga.
I have no fault codes showing I finaly sorted out 41&96 pipes were perished.
The engine stalls when it feels like it more so when I select drive or reverse. it cut out as I got onto a roundabout tonight and stalled at the next 2 roundabouts.
When the engine idles the revs drop to almost a stall then engine kicks back in again.
Would the fuel pump solinoid cause this :-?
apart from the above it runs sweet as a nut considering ive spent £1300 on it :o
Logged

charlie

  • Senior Member
  • ****
  • Offline Offline
  • Gender: Male
  • sunderland
  • Posts: 630
    • View Profile
Re: auto tractor stalling
« Reply #1 on: 17 August 2010, 21:56:03 »

Is this the car thats had its pump changed?? :y
Logged

hoofing it

  • Omega Knight
  • *****
  • Offline Offline
  • Gender: Male
  • Posts: 1556
    • View Profile
Re: auto tractor stalling
« Reply #2 on: 17 August 2010, 22:00:26 »

Quote
Is this the car thats had its pump changed?? :y
yes the main fuel pump was changed 3 months ago with a re-con and only in the last 3 weeks has developed the stalling.
Logged

Omegatoy

  • Omega Baron
  • *****
  • Offline Offline
  • UK
  • Posts: 3688
    • View Profile
Re: auto tractor stalling
« Reply #3 on: 18 August 2010, 07:19:57 »

Hmm,What does it tickover at? should be around 700 800 if an auto i think? then when its dropped into gear should be around 600/650 if its lower than that  first i would be getting someone with Tech2 to increase the tickover 

hoofing it

  • Omega Knight
  • *****
  • Offline Offline
  • Gender: Male
  • Posts: 1556
    • View Profile
Re: auto tractor stalling
« Reply #4 on: 18 August 2010, 07:42:53 »

Quote
Hmm,What does it tickover at? should be around 700 800 if an auto i think? then when its dropped into gear should be around 600/650 if its lower than that  first i would be getting someone with Tech2 to increase the tickover 
Tickover is between 600-700rpm and sits at 600rpm with gear selected.
its strange that most of the time when drive is selected it drops in smoothly but its starting to happen more in reverse the stalling.
I have to reverse up into a parking space and when I lift foot off the gas it stalls.
Ive checked the timing and it's spot on so as you say the next step is to increase the tickover :y
Logged

hoofing it

  • Omega Knight
  • *****
  • Offline Offline
  • Gender: Male
  • Posts: 1556
    • View Profile
Re: auto tractor stalling
« Reply #5 on: 18 August 2010, 10:03:59 »

UPDATE
now i'm getting worried I just turn the steering wheel and the engine stalls :o :-?
Logged

aaronjb

  • Guest
Re: auto tractor stalling
« Reply #6 on: 18 August 2010, 10:44:52 »

That does sound like fuel starvation..

Turning the wheels (especially stationary) will add a significant load in the form of the PAS pump - if the engine is already marginal on enough power to maintain a tickover, the additional draw could suck into a stall..

It's not something silly like you're low on fuel and the lift pump is failing? Not meaning to offend you -- you've had a fair saga so I imagine you've already done the obvious, but sometimes the obvious things get overlooked  :)
Logged

hoofing it

  • Omega Knight
  • *****
  • Offline Offline
  • Gender: Male
  • Posts: 1556
    • View Profile
Re: auto tractor stalling
« Reply #7 on: 18 August 2010, 11:54:43 »

Quote
That does sound like fuel starvation..

Turning the wheels (especially stationary) will add a significant load in the form of the PAS pump - if the engine is already marginal on enough power to maintain a tickover, the additional draw could suck into a stall..

It's not something silly like you're low on fuel and the lift pump is failing? Not meaning to offend you -- you've had a fair saga so I imagine you've already done the obvious, but sometimes the obvious things get overlooked  :)
Any comments welcome anyway im just off to replace the fuel pump solinoid with one I know works :y
Logged

Entwood

  • Omega Queen
  • *****
  • Offline Offline
  • Gender: Male
  • North Wiltshire
  • Posts: 19566
  • My Old 3.2 V6 Elite (LPG)
    • Audi A6 Allroad 3.0 DTI
    • View Profile
Re: auto tractor stalling
« Reply #8 on: 18 August 2010, 13:02:49 »

Daft idea .. but is the PAS pump serviceable ??? If it is on its way to seizure .. it could be overloading the system badly ??? Try running with the aux belt off for 30 secs or so .. just to check out the PAS ???
Logged

aaronjb

  • Guest
Re: auto tractor stalling
« Reply #9 on: 18 August 2010, 13:11:49 »

PAS pumps are usually servicable in theory - they're relatively simple affairs.. but in practice there aren't often service kits available :(

If I had a working EPC, I'd look.. I should really sort that.

Incidentally as an aside - you can discount it being the MAP sensor; mine ran just fine with the MAP sensor hooked up to nothing so it should certainly fuel fine at idle even if that's broken.

Which really only leaves mechanical things on the TD; fuel pump, injectors, and possibly lift pump..
Logged

hoofing it

  • Omega Knight
  • *****
  • Offline Offline
  • Gender: Male
  • Posts: 1556
    • View Profile
Re: auto tractor stalling
« Reply #10 on: 18 August 2010, 15:00:39 »

I think ive found the fault.
When the engine stalled I left the ignition on and a noise like the alarm was coming from the fuel pump.
I unpluged the sensor at the base of the fuel pump and the noise stopped so at this moment im replacing the sensor. but mother nature has put a stop to that, yip its raining  :(
Logged

aaronjb

  • Guest
Re: auto tractor stalling
« Reply #11 on: 18 August 2010, 15:29:29 »

Injector pump or lift pump?

If it's the injector pump, the only sensor on it is the fuel temperature sensor, isn't it?
Logged

hoofing it

  • Omega Knight
  • *****
  • Offline Offline
  • Gender: Male
  • Posts: 1556
    • View Profile
Re: auto tractor stalling
« Reply #12 on: 18 August 2010, 15:57:02 »

its the injector pump as far as im aware theres a few sensors in the pump which aren't servicable im not sure if this one is for fuel qauntity, and its still hammering it down here >:(
Rains now gone off and thats it all back together and running there is a slight difference idle is a bit higher 7-750rpm not stalling(yet) touch wood its fixed :y
« Last Edit: 18 August 2010, 17:06:45 by hoof »
Logged

hoofing it

  • Omega Knight
  • *****
  • Offline Offline
  • Gender: Male
  • Posts: 1556
    • View Profile
Re: auto tractor stalling
« Reply #13 on: 18 August 2010, 18:52:37 »

Just back from a wee run and its back to its old ways but not as bad its not stalling as much.
either selecting drive or reverse and just turning the steering wheel it stalls.
The alarm like noise I mentioned before is still there its coming from the top part of the fuel pump where the control cable goes in. I can feel the return fuel pipe vibrate.
this has got me wondering would the imobiliser cause this.
Logged

erubus

  • Junior Member
  • **
  • Offline Offline
  • blairgowrie
  • Posts: 148
    • View Profile
Re: auto tractor stalling
« Reply #14 on: 22 August 2010, 10:54:57 »

This is exactly what my old td used to do.  I could never get to the bottom of it and the two PO's I know of before couldn't sort it, and i think most sensors on it had been replaced at some point.  The answer we all got was that the pump was knackered and needed replaced.  but you're saying you got a new pump already.  Is the new pump guaranteed?  it might still be faulty.

any load put on the engine at idle (it idled perfectly with no load) even the rear demister, would make it cut out.  it would cut out trying to reverse up the slightest incline, when the steering wheel was moved, or when out into gear.  I got round this by tying up the throtte pedal so that it idled a bit faster (not much)  tied it up a little, tried moving steering wheel etc, saw if it cut out or not then adjusted again as necessary.  it got round the stalling problem, but destroyed the forward clutch in the autobox in about 3 months (destroyed as in no forward drive at all) and the car ended up getting scrapped.
Logged
Pages: [1]   Go Up
 

Page created in 0.015 seconds with 17 queries.