V8 ECU problems

FLYING BANANA · 14th September 2017, 16:23

My V8 has had an ongoing problem for the last 3 weeks. The EML light is constantly on. The car has been to MJS twice. The second visit they managed to get the light to go out after doing yet another battery re-set. 24 hours later the light was back on.

I then took the car to British Legends in Southend on MJS's recommendation, and now have been told by them that the fault lies with the ECU. They brought in a auto electrician who removed the engine ECU, and checked it for a corroded pin but the unit was clean and totally dry.

Been over on the 260's forum and asked for help. New units are no longer available. But there is a garage in Greenwich, Sinspeed, that does ECU repairs. But I'm not a 100% sure whether to take the car there or not. I have pm'd MarinaBrian, and am awaiting a reply. In the meantime does anyone else have any suggestions on what to do.

e668ecp · 14th September 2017, 16:40

I'd also PM BigRuss... I can help by taking my dad's V8 to him if needed to help with fault finding / swapping bts over

FLYING BANANA · 14th September 2017, 16:51

Quote:

Originally Posted by e668ecp

I'd also PM BigRuss... I can help by taking my dad's V8 to him if needed to help with fault finding / swapping bts over

Many thanks for the kind offer. I will contact Big Russ but I'll give Brian a chance to get back to me first.

cb750chris · 14th September 2017, 18:08

Might be worth contacting member 75.0, I know he got an ECU recently (I matched the immobiliser up on it so the car runs) , not sure if that was an mg rover one, or if it was just a stock ford Mustang unit.

Regards
Chris

BigRuss · 14th September 2017, 18:20

The EMS ECU on a V8 is a Standard Ford unit, you can use an ECU from another V8 without any programming as it's not paired with the immobiliser

On V8's the immobiliser is paired with the Gateway ECU

Russ

FLYING BANANA · 14th September 2017, 18:41

Quote:

Originally Posted by BigRuss

The EMS ECU on a V8 is a Standard Ford unit, you can use an ECU from another V8 without any programming as it's not paired with the immobiliser

On V8's the immobiliser is paired with the Gateway ECU

Russ

My V8 has the Kenne Bell supercharger fitted. Would that make a difference re the ECU.

BigRuss · 14th September 2017, 18:47

Not sure if the ECU is different or if it uses a piggyback board on the original

It could be either.

Not easy to check either on a V8 as you have to take out the passenger airbag and pull forward the dash at that end to get it out

Russ

14th September 2017, 16:23	#1
FLYING BANANA Moderator/Club Shop MG ZT 1.8t+. No.3 of 4 in Sunspot Yellow & Ford Fiesta in Black. Join Date: Aug 2010 Location: Rattler Farm Posts: 22,559 Thanks: 9,270 Thanked 15,645 Times in 6,806 Posts	V8 ECU problems My V8 has had an ongoing problem for the last 3 weeks. The EML light is constantly on. The car has been to MJS twice. The second visit they managed to get the light to go out after doing yet another battery re-set. 24 hours later the light was back on. I then took the car to British Legends in Southend on MJS's recommendation, and now have been told by them that the fault lies with the ECU. They brought in a auto electrician who removed the engine ECU, and checked it for a corroded pin but the unit was clean and totally dry. Been over on the 260's forum and asked for help. New units are no longer available. But there is a garage in Greenwich, Sinspeed, that does ECU repairs. But I'm not a 100% sure whether to take the car there or not. I have pm'd MarinaBrian, and am awaiting a reply. In the meantime does anyone else have any suggestions on what to do. __________________ 233,431. That’s our second meet done, no.3 next weekend. onen hag oll

14th September 2017, 18:08	#4
cb750chris Trader Rover 75 Tourer Join Date: Apr 2011 Location: Portsmouth Posts: 849 Thanks: 201 Thanked 292 Times in 200 Posts	Might be worth contacting member 75.0, I know he got an ECU recently (I matched the immobiliser up on it so the car runs) , not sure if that was an mg rover one, or if it was just a stock ford Mustang unit. Regards Chris __________________ Now offering T4 services in the Fareham area Replacement keys programmed / supplied / cut Diesel 135 upgrade available IPK virginisation and T4 matching available Sorry, due to a big change in home circumstances, I am unable to do any large jobs at present, but can still offer evening time diagnostics.

14th September 2017, 18:20	#5
BigRuss Premium Trader 75 CDT Tourer,2.5 Launch Saloon, Omipro MG/Rover (T4) Join Date: Jul 2007 Location: Liversedge, West Yorkshire Posts: 5,405 Thanks: 1,105 Thanked 1,340 Times in 661 Posts	The EMS ECU on a V8 is a Standard Ford unit, you can use an ECU from another V8 without any programming as it's not paired with the immobiliser On V8's the immobiliser is paired with the Gateway ECU Russ __________________ Replacement Key Service http://https://the75andztclub.co.uk/...d.php?t=244732 Full T4 Testbook diagnostics available. Diesel ECU repair and replacement. Options enabled or disabled as required. Diesel X-Power 135 and 160bhp, Rover 1.8T 150 to 160 MG 160 V6 to 177 upgrades available P.M. for details.

14th September 2017, 18:47	#7
BigRuss Premium Trader 75 CDT Tourer,2.5 Launch Saloon, Omipro MG/Rover (T4) Join Date: Jul 2007 Location: Liversedge, West Yorkshire Posts: 5,405 Thanks: 1,105 Thanked 1,340 Times in 661 Posts	Not sure if the ECU is different or if it uses a piggyback board on the original It could be either. Not easy to check either on a V8 as you have to take out the passenger airbag and pull forward the dash at that end to get it out Russ __________________ Replacement Key Service http://https://the75andztclub.co.uk/...d.php?t=244732 Full T4 Testbook diagnostics available. Diesel ECU repair and replacement. Options enabled or disabled as required. Diesel X-Power 135 and 160bhp, Rover 1.8T 150 to 160 MG 160 V6 to 177 upgrades available P.M. for details.

14th September 2017, 16:40	#2
e668ecp I really should get out more....... Range Rover Evoque and ZT V8 SE Join Date: Feb 2007 Location: Yorkshire Posts: 2,232 Thanks: 20 Thanked 37 Times in 34 Posts	I'd also PM BigRuss... I can help by taking my dad's V8 to him if needed to help with fault finding / swapping bts over