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1997 Plus 8 tickover #675184
28/11/20 04:22 PM
28/11/20 04:22 PM
Joined: Aug 2020
Posts: 36
Cumbria
Phil+8 Offline OP
Just Getting Started
Phil+8  Offline OP
Just Getting Started

Joined: Aug 2020
Posts: 36
Cumbria
Hi,
When I first bought my 1997 Plus 8 in August, the tickover was very erratic and would quite often just cut out. Sometimes hunting or over revving first.
I changed the stepper motor, HT leads and distributor cap, and Matt at Lifes Motors tried a different MAF sensor and ECU that he had on the shelf.
Nothing seemed to make much difference until we changed the temperature sensor and Lambda sensors.
Coincidentally, I fitted Librands manifolds this week and was thankful for the new Lambda sensors.
Now, when started, it appears to tick over steadily for a minute or two, then it is like the engine has been switched off, it just cuts out.
I have checked all the hoses for air leaks, I have tried it without the air filter and I have scrupulously checked the new Magnecor HT leads to make sure they are correctly fitted and not touching each other.

I would be grateful for any ideas on where I can go with this now.

Many thanks, Phil

Re: 1997 Plus 8 tickover [Re: Phil+8] #675187
28/11/20 04:36 PM
28/11/20 04:36 PM
Joined: Jan 2007
Posts: 1,711
A
aerotaff Offline
Talk Morgan Enthusiast
aerotaff  Offline
Talk Morgan Enthusiast
A

Joined: Jan 2007
Posts: 1,711
Could be the avanced weights in the distributor slightly out of sink,many people overlook the distributor when the car is getting older. Em

Re: 1997 Plus 8 tickover [Re: Phil+8] #675188
28/11/20 04:37 PM
28/11/20 04:37 PM
Joined: Aug 2020
Posts: 36
Cumbria
Phil+8 Offline OP
Just Getting Started
Phil+8  Offline OP
Just Getting Started

Joined: Aug 2020
Posts: 36
Cumbria
I should say that the injectors have been recently serviced and that normal driving is perfect. It is only when left to tick over that the stalling etc occurs.

Re: 1997 Plus 8 tickover [Re: Phil+8] #675190
28/11/20 04:38 PM
28/11/20 04:38 PM
Joined: Jul 2019
Posts: 1,513
L
Luddite Offline
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Luddite  Offline
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L

Joined: Jul 2019
Posts: 1,513
Fuel pressure...? Think the GoMoG webmaster had a pressure gauge permanently in his fuel circuit to monitor pump and pressure regulator operation... For sure fuel issues are usually at the other end of the scale. Other than that perhaps the maf drops out of range range at low airflow due to ...?

I know nothing of EFI but thought you could connect up to a diagnostic unit that would store fault codes and provide live values to check all the prefireal devices.... I will happily stick with carbs for now. Hope someone comes up with an answer for you soon...

Good luck..

Re: 1997 Plus 8 tickover [Re: Phil+8] #675195
28/11/20 04:56 PM
28/11/20 04:56 PM
Joined: Nov 2015
Posts: 3,204
Yorkshire
CooperMan Offline
Talk Morgan Addict
CooperMan  Offline
Talk Morgan Addict

Joined: Nov 2015
Posts: 3,204
Yorkshire
Is it an ECU that logs fault codes ?


Jon M
Re: 1997 Plus 8 tickover [Re: Phil+8] #675197
28/11/20 05:03 PM
28/11/20 05:03 PM
Joined: Aug 2020
Posts: 36
Cumbria
Phil+8 Offline OP
Just Getting Started
Phil+8  Offline OP
Just Getting Started

Joined: Aug 2020
Posts: 36
Cumbria
I'm pretty sure I remember Lifes Motors saying it isn't.

Re: 1997 Plus 8 tickover [Re: Phil+8] #675200
28/11/20 05:07 PM
28/11/20 05:07 PM
Joined: Sep 2016
Posts: 567
Chester, UK
Grumpy2 Offline
Talk Morgan Regular
Grumpy2  Offline
Talk Morgan Regular

Joined: Sep 2016
Posts: 567
Chester, UK
There’s an odd thing with the librands that pass under the sump. You need to also swap the wiring looms to the lambda sensors from side to side.

Apparently confuses the ecu no end if you don’t.


94 plus 8 in Westminster Green - I think!
Re: 1997 Plus 8 tickover [Re: Phil+8] #675201
28/11/20 05:10 PM
28/11/20 05:10 PM
Joined: Aug 2020
Posts: 36
Cumbria
Phil+8 Offline OP
Just Getting Started
Phil+8  Offline OP
Just Getting Started

Joined: Aug 2020
Posts: 36
Cumbria
Thanks, but I followed Librands instructions and fitting them didn't change the stalling situation at all.

Re: 1997 Plus 8 tickover [Re: Grumpy2] #675226
28/11/20 07:08 PM
28/11/20 07:08 PM
Joined: Jun 2015
Posts: 733
North Somerset, UK
Deejay Offline
Talk Morgan Regular
Deejay  Offline
Talk Morgan Regular

Joined: Jun 2015
Posts: 733
North Somerset, UK
Originally Posted by Grumpy2
There’s an odd thing with the librands that pass under the sump. You need to also swap the wiring looms to the lambda sensors from side to side.

Apparently confuses the ecu no end if you don’t.

That’s the very thing that happened to a friend. Ended up with several trips to a garage, bits replaced with no improvement and it turned out to be lambda sensors needed swapping over from side to side. Forgive me but are you sure the Librands instructions are correct and have been interpreted correctly??


Doug

2011 +4 in Rich Maroon
1972 750 “ComDom” sprinter
1958 Triton 650
1992 Triumph Trophy 900
Re: 1997 Plus 8 tickover [Re: Phil+8] #675241
28/11/20 08:51 PM
28/11/20 08:51 PM
Joined: Dec 2017
Posts: 949
Evergreen, Colorado, USA
britmog Offline
Talk Morgan Regular
britmog  Offline
Talk Morgan Regular

Joined: Dec 2017
Posts: 949
Evergreen, Colorado, USA
On my 94 +8 I had the issue of the engine stalling when the vehicle came to a stop, fault code 48 showed on the ECU LED readout which is mainly the Stepper Motor sticking or incorrect base idle speed adjustment and possible throttle butterfly adjustment. After replacing Stepper Motor the problem persisted, I also checked the butterfly adjustment and in the end established it was a poor earth on the road speed sensor. Rough running can be attributed to fuel or ignition issues, do you know what code is being shown?

These links might be useful:

http://www.britishv8.org/Articles/Rover-14CUX-EFI.htm

http://www.v8wizard.com/Setting_Air_Mass_Flow_Meter_and_Throttle_Pot.php

https://www.actproducts.co.uk/2011/lucas-14cux-fuel-injection-system-%e2%80%93-installation-and-diagnostic-notes/


Last edited by britmog; 28/11/20 08:59 PM.

Bruce
1964 4/4 Series V Comp (Megan)
1994 +8 (Maurice)
2013 M3W (Olga)
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