Go Back   The 75 and ZT Owners Club Forums > The 75 and ZT Owners Club Forums > Technical Help Forum
Register FAQ Image Gallery Members List Calendar Mark Forums Read
Notices

Reply
 
Thread Tools Display Modes
Old 19th April 2019, 20:40   #1
macafee2
This is my second home
 
Rover 75 Saloon & Tourer

Join Date: Sep 2012
Location: Lincoln
Posts: 14,892
Thanks: 1,630
Thanked 3,032 Times in 2,181 Posts
Default FBH keeps going to lock out

My FBH pcb seems to keep going into lock out and removing fuse 8 does not unlock it.

It was repaired, worked then locked out. It was unlocked, worked then again seems to have locked out... wont fire up.

I'm have been earthing pin 3 to use it so the car is warm before I start it

Glow plug has been tested and was found to be ok.

What values should I get if I test the water pump and fan?

Anything else I should be testing?

Seems repairing is more expensive then replacing

macafee2
macafee2 is offline   Reply With Quote
Old 19th April 2019, 20:48   #2
bl52krz
This is my second home
 
bl52krz's Avatar
 
Rover 75 cdt club + Rover 2.5 KV6 Conni SE

Join Date: May 2008
Location: Birmingham
Posts: 11,356
Thanks: 6,587
Thanked 2,262 Times in 1,729 Posts
Default

Quote:
Originally Posted by macafee2 View Post
My FBH pcb seems to keep going into lock out and removing fuse 8 does not unlock it.

It was repaired, worked then locked out. It was unlocked, worked then again seems to have locked out... wont fire up.

I'm have been earthing pin 3 to use it so the car is warm before I start it

Glow plug has been tested and was found to be ok.

What values should I get if I test the water pump and fan?

Anything else I should be testing?

Seems repairing is more expensive then replacing

macafee2
Hi Ian. Was talking to Trebor yesterday while he was fitting a switch for me and my friend’s cars about fbh. Evidently the glow plug is used to make two diagnosis, so it may read ok , but might not make the second diagnosis correctly. I would get in touch with Trebor or Stocktake to carry out a test on both functions for you..
__________________
Great Barr, Birmingham.
bl52krz is offline   Reply With Quote
Old 20th April 2019, 08:10   #3
suffolk boy
This is my second home
 
fiat panda

Join Date: Sep 2009
Location: haverhill
Posts: 6,720
Thanks: 96
Thanked 586 Times in 526 Posts
Default

Quote:
Originally Posted by macafee2 View Post
My FBH pcb seems to keep going into lock out and removing fuse 8 does not unlock it.

It was repaired, worked then locked out. It was unlocked, worked then again seems to have locked out... wont fire up.

I'm have been earthing pin 3 to use it so the car is warm before I start it

Glow plug has been tested and was found to be ok.

What values should I get if I test the water pump and fan?

Anything else I should be testing?

Seems repairing is more expensive then replacing

macafee2
there are few things that can cause this.does the fan work ?is the water pump working? is the fuel pump ok?
faults with any of these will cause it to shut down.
i made up french mikes magic tester which is a bulb with holder.two bits of wire and two sewing needles.solder all together.then you pierce the live feed then place the other needle into the feed for the fan the light will come on and the fan runs etc.repeat the process for the other components before replacing any thing.or if you have access to a t4 put it on that i belive it can tell you whats is going on with these components.
__________________
fiat panda 1.2 eco
suffolk boy is offline   Reply With Quote
Old 20th April 2019, 09:03   #4
Mike Trident
Posted a thing or two
 
Mike Trident's Avatar
 
Rover 75 CDTi Saloon & Citroen C1

Join Date: Jun 2016
Location: Oakenshaw, Near Bradford
Posts: 1,618
Thanks: 385
Thanked 552 Times in 328 Posts
Default

Deffo do these checks! It will only start if everything is ok when in runs through it's check cycle.
__________________
Rover 75 2.0 CDTi (131Ps) Conn SE Saloon. (Manual)
160 Remap, cruise control, electric window blind, temp gauge, Real walnut / ZT interior, FBH with GSM control.

BORN
Tuesday, 5th October 2004 @ 12:35:52
This vehicle was the 104,679th 75 to run off the production line, out of 112,381
This vehicle was the 3,318th 75 CDT Connoisseur SE (135) to be made out of 4,744
This vehicle was the 12,440th 75 in Starlight Silver (code: MBB) to be made out of 14,280 Starlight Silver 75s
Mike Trident is offline   Reply With Quote
Old 20th April 2019, 10:08   #5
macafee2
This is my second home
 
Rover 75 Saloon & Tourer

Join Date: Sep 2012
Location: Lincoln
Posts: 14,892
Thanks: 1,630
Thanked 3,032 Times in 2,181 Posts
Default

Quote:
Originally Posted by suffolk boy View Post
there are few things that can cause this.does the fan work ?is the water pump working? is the fuel pump ok?
faults with any of these will cause it to shut down.
i made up french mikes magic tester which is a bulb with holder.two bits of wire and two sewing needles.solder all together.then you pierce the live feed then place the other needle into the feed for the fan the light will come on and the fan runs etc.repeat the process for the other components before replacing any thing.or if you have access to a t4 put it on that i belive it can tell you whats is going on with these components.
As the pcb has it seems gone to lock out, can I still perform all these tests by earthing pin 3?

if I supply 12v from a battery to the water pump and fan, is this an acceptable way to test?

I don't have T4 but there is one not too far away

macafee2
macafee2 is offline   Reply With Quote
Old 20th April 2019, 10:53   #6
suffolk boy
This is my second home
 
fiat panda

Join Date: Sep 2009
Location: haverhill
Posts: 6,720
Thanks: 96
Thanked 586 Times in 526 Posts
Default

Quote:
Originally Posted by macafee2 View Post
As the pcb has it seems gone to lock out, can I still perform all these tests by earthing pin 3?

if I supply 12v from a battery to the water pump and fan, is this an acceptable way to test?

I don't have T4 but there is one not too far away

macafee2
check the fuse in the engine comp fuse box first.if then it works by earthing pin three you should be able to feel the air being sucked in the the fan intake and hear it.the water pump should also whirr into life.you can feel if its moving by touching the casing
__________________
fiat panda 1.2 eco
suffolk boy is offline   Reply With Quote
Old 20th April 2019, 16:52   #7
macafee2
This is my second home
 
Rover 75 Saloon & Tourer

Join Date: Sep 2012
Location: Lincoln
Posts: 14,892
Thanks: 1,630
Thanked 3,032 Times in 2,181 Posts
Default

Quote:
Originally Posted by suffolk boy View Post
check the fuse in the engine comp fuse box first.if then it works by earthing pin three you should be able to feel the air being sucked in the the fan intake and hear it.the water pump should also whirr into life.you can feel if its moving by touching the casing
I'll be on it tomorrow but am fairly sure all of these will work.

macafee2
macafee2 is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 14:28.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright © 2006-2023, The Rover 75 & MG ZT Owners Club Ltd