V6 just went into meltdown

victorgte · 25th October 2017, 09:49

Had a new aircon condenser fitted Monday so today I thought would be a good idea to get it regassed today whilst in Gloucester. I can’t drive as I’ve just had surgery so wife and I set off or so we thought.

3 things are obvious immediately.
Gearbox has gone into limp mode. On the dash instead of D for Drive it says EP and crawls along in 3rd gear I suspect.
VIS motor at the back nearest the bulkhead is running continuously so I’ve pulled the plug so it does not drain the battery when the engine is off as it really does run all the time.
Finally the rad cooling fan runs continuously too. I’ve left the system on ECON until I’ve had the regass but it just runs.

Any advice is welcome as we are a car down right now. Thanks

trikey · 25th October 2017, 10:00

Sounds like a kbus error, battery disconnect for 10 mins and see what that does, if it doesnt work, start looking for water ingress on an electrical component.

victorgte · 25th October 2017, 10:10

I’ll do that now thanks.

gary t · 25th October 2017, 10:15

sounds to me more like something shorting out caused by work recently done ie condenser change. ?

Mickyboy · 25th October 2017, 10:32

I’m with Trikey on this K bus causes some weird things to happen.
Mick

gary t · 25th October 2017, 10:41

may be but my thinking is the ecu is being told the cars to hot had similar thing when my engine temp sender wire chafed and shorted.did the same thing fan on auto box in limp mode just a thought

victorgte · 25th October 2017, 10:49

Just put the battery back on.
Limp mode is gone and car drives. Fan not running but I’m sure it will come back on if the engine gets hot. Will watch that one.
Only concern left is the VIS motor running after the engine is off.
Press the red test button in and it will go off but release the button and it comes back on. Unplug when idle is my only option to avoid battery drain. At least I have a working car again.
Great advice and quick too thanks.

stocktake · 25th October 2017, 12:44

Your Vis motor will be fine, it is the balance flap behind it has sheered, not an uncommon problem. Your Vis motor will just rotate round and round without the flap but will actually stop after a few mins of taking the key out when the ECU shuts down. until you find a replacement flap the best thing to do is to disconnect it from the plug. It may need resetting when you fit the new flap. PM me when you have a replacement flap and I will go through that with you

D...

victorgte · 25th October 2017, 14:10

Quote:

Originally Posted by stocktake

Your Vis motor will be fine, it is the balance flap behind it has sheered, not an uncommon problem. Your Vis motor will just rotate round and round without the flap but will actually stop after a few mins of taking the key out when the ECU shuts down. until you find a replacement flap the best thing to do is to disconnect it from the plug. It may need resetting when you fit the new flap. PM me when you have a replacement flap and I will go through that with you

D...

Thanks. The motor does now turn off after a short time. Yes will have to source a flap and unplug for now.

victorgte · 25th October 2017, 15:46

Despite a 20 mile journey it’s gone again. Battery is off. Will try it again in the morning.

25th October 2017, 09:49	#1
victorgte I really should get out more....... MGTF, MGZT, Range Rover Join Date: Sep 2013 Location: Cheltenham Posts: 2,807 Thanks: 395 Thanked 633 Times in 446 Posts	V6 just went into meltdown Had a new aircon condenser fitted Monday so today I thought would be a good idea to get it regassed today whilst in Gloucester. I can’t drive as I’ve just had surgery so wife and I set off or so we thought. 3 things are obvious immediately. Gearbox has gone into limp mode. On the dash instead of D for Drive it says EP and crawls along in 3rd gear I suspect. VIS motor at the back nearest the bulkhead is running continuously so I’ve pulled the plug so it does not drain the battery when the engine is off as it really does run all the time. Finally the rad cooling fan runs continuously too. I’ve left the system on ECON until I’ve had the regass but it just runs. Any advice is welcome as we are a car down right now. Thanks __________________ MG TF 135, MG ZT, Range Rover P38

25th October 2017, 10:00	#2
trikey Premium Trader Rover 75 Join Date: Nov 2010 Location: Devon Posts: 33,818 Thanks: 8,837 Thanked 14,831 Times in 8,030 Posts	Sounds like a kbus error, battery disconnect for 10 mins and see what that does, if it doesnt work, start looking for water ingress on an electrical component. __________________ Lest we forget..

25th October 2017, 10:10	#3
victorgte I really should get out more....... MGTF, MGZT, Range Rover Join Date: Sep 2013 Location: Cheltenham Posts: 2,807 Thanks: 395 Thanked 633 Times in 446 Posts	I’ll do that now thanks. __________________ MG TF 135, MG ZT, Range Rover P38

25th October 2017, 10:15	#4
gary t Loves to post rover 75 connoisseur se v6 Join Date: Mar 2013 Location: brockworth Posts: 278 Thanks: 46 Thanked 23 Times in 20 Posts	short ? sounds to me more like something shorting out caused by work recently done ie condenser change. ?

25th October 2017, 10:32	#5
Mickyboy This is my second home MG ZT CDTI 135 + & MGZT CDTI AUTO 160 & ROVER 75 TOURER CDTI 160 TROPHY YELLOW Join Date: Aug 2013 Location: Hernebay Posts: 4,331 Thanks: 818 Thanked 2,414 Times in 1,141 Posts	I’m with Trikey on this K bus causes some weird things to happen. Mick __________________ [SIGPIC][/SIGPIC] T4 Owner Jobs done : new UBP, Spy hole mod, Rear hub(wheel bearing),plenum cleaned and emptied, Inline thermostat fitted,Full service, In car Digital tv/DVD Bluetooth Satnav etc, Replaced UBP, Restored headlights,Fixed airbag connection.replaced HP pump,replaced rear light seals,changed intercooler O rings. Jobs to do: ,replace drivers lock,.[/SIZE]

25th October 2017, 10:41	#6
gary t Loves to post rover 75 connoisseur se v6 Join Date: Mar 2013 Location: brockworth Posts: 278 Thanks: 46 Thanked 23 Times in 20 Posts	could be may be but my thinking is the ecu is being told the cars to hot had similar thing when my engine temp sender wire chafed and shorted.did the same thing fan on auto box in limp mode just a thought

25th October 2017, 10:49	#7
victorgte I really should get out more....... MGTF, MGZT, Range Rover Join Date: Sep 2013 Location: Cheltenham Posts: 2,807 Thanks: 395 Thanked 633 Times in 446 Posts	Just put the battery back on. Limp mode is gone and car drives. Fan not running but I’m sure it will come back on if the engine gets hot. Will watch that one. Only concern left is the VIS motor running after the engine is off. Press the red test button in and it will go off but release the button and it comes back on. Unplug when idle is my only option to avoid battery drain. At least I have a working car again. Great advice and quick too thanks. __________________ MG TF 135, MG ZT, Range Rover P38

25th October 2017, 12:44	#8
stocktake Vis Whiz Rover 75 2.5 auto Saloon Join Date: Jun 2007 Location: LEEDS Posts: 20,602 Thanks: 2,057 Thanked 3,056 Times in 1,621 Posts	Your Vis motor will be fine, it is the balance flap behind it has sheered, not an uncommon problem. Your Vis motor will just rotate round and round without the flap but will actually stop after a few mins of taking the key out when the ECU shuts down. until you find a replacement flap the best thing to do is to disconnect it from the plug. It may need resetting when you fit the new flap. PM me when you have a replacement flap and I will go through that with you D... __________________ Dave... Lost a few stones and a Gall Bladder and part of a bile duct and all of my dignity in the suppository incident

25th October 2017, 15:46	#10
victorgte I really should get out more....... MGTF, MGZT, Range Rover Join Date: Sep 2013 Location: Cheltenham Posts: 2,807 Thanks: 395 Thanked 633 Times in 446 Posts	Despite a 20 mile journey it’s gone again. Battery is off. Will try it again in the morning. __________________ MG TF 135, MG ZT, Range Rover P38