MINI2

philly c · Mar 11th, 2007, 03:34 PM

Hi there

I have just finished fitting my new manifold and now the engine managemtn light remains on can anyone help or has nayone experianced this before?

Many Thanks Phil

S33BBY · Mar 11th, 2007, 04:47 PM

You probably need to reset the ECU. Have a search; I believe it just involves disconnecting the battery for a little while.

philly c · Mar 11th, 2007, 05:12 PM

i disconnected the battery but not for very long and nothing happened the engine management light still came on. Will a re map be required to resolve the problem??

philly c · Mar 12th, 2007, 02:58 PM

well the engine managemnet light has now decided to go off so fingers crossed it should be alright now!

Thanks for tyour help any ways

Cheers

Phil

RVW · Mar 12th, 2007, 04:50 PM

Quote: Originally Posted by philly c (original)

well the engine managemnet light has now decided to go off so fingers crossed it should be alright now!

Thanks for tyour help any ways

Cheers

Phil

Well I hope so

Mine has been off then back on, had a reset at the dealers. lasted about 1000 miles then came on gain

So had a new oxy sensor fitted, light stayed off for about another 1000miles then came back on

Now trying some suggestions made to me. New seal on oil filler and new petrol cap

the cap sealwas cracked so fingers crossed it may cure it, althuogh not holding out much help

philly c · Mar 12th, 2007, 05:47 PM

fingers crossed them mate

MINIMANIAUK · Mar 12th, 2007, 05:50 PM

with a new manifold fitted, if it is a performance one, and it works, more air flow is produced via the exhaust, this causes the o2 sensor to think there is a fault in the cat as the flow exceeds the factory limit, the same is true if the sensor detects too little flow and the light comes on to tell you the cat is blocked/faulty

Richard Crofts · Mar 13th, 2007, 08:50 AM

It will either go off on its own or you can reset the ECU and re-teach it on the new manifold. There a how to on ECU reset either here or NAM or motoringfile.

philly c · Mar 13th, 2007, 07:16 PM

My Ecu has been as good as gold scince i disconected the battery. Is it true that the ECU has to be disconnected over night about 16 hours though as this is the time it takes for the ECU memory to be lost??

oldmots · Mar 14th, 2007, 02:17 AM

Quote: Originally Posted by MINIMANIAUK (original)

with a new manifold fitted, if it is a performance one, and it works, more air flow is produced via the exhaust, this causes the o2 sensor to think there is a fault in the cat as the flow exceeds the factory limit, the same is true if the sensor detects too little flow and the light comes on to tell you the cat is blocked/faulty

I am no expert in MINI O2 sensors, but my experience with other cars, including my current XJ6 with 4 O2 sensors and four converters tells me that these sensors do not monitor gas flow, only O2 content in the flow. The only sensor I know of that could detect an exhaust restriction is a manifiold absolute pressure sensor, but the MINI does not have one. It is possible that the problem you are having may be related to a gasket leak or other mainfold leak either in the intake or exhaust, which will contaminate the airstream and trigger a fuel trim problem, possibly setting off the light.

philly c · Mar 26th, 2007, 09:33 AM

Light is back on again
will make sure taht the bolts on the manifold havent come loose and are nice and tight but hope i ait going to have lots of problems!

Would the gasget leaking at the rear exhaust cause a problem|?

oldmots · Mar 26th, 2007, 05:23 PM

I suggest getting an OBDII scanner or code reader and find out what the light is for. You can then reset the light and see if it comes back.

Mar 11th, 2007, 03:34 PM	#1
philly c MINI2 Regular My Classifieds Join Date: Jun 2006 Location: Darlington Local Time: 05:34 PM Posts: 154 Offline	Engine Management Hi there I have just finished fitting my new manifold and now the engine managemtn light remains on can anyone help or has nayone experianced this before? Many Thanks Phil

Mar 11th, 2007, 04:47 PM	#2 (permalink)
S33BBY MINI2 Master Join Date: Dec 2003 Location: Hertfordshire Local Time: 05:34 PM Posts: 3,126 Offline	You probably need to reset the ECU. Have a search; I believe it just involves disconnecting the battery for a little while. JCW Sound Kit \| H/K \| Sat Nav \| SS+ \| Xenons \| 17" Anthracite R90s \| Goodyear Eagle F1 GS-D3s \| ...

Mar 12th, 2007, 04:50 PM	#5 (permalink)
RVW 003 On a Mission My Classifieds Join Date: Jan 2003 Location: Cabbage County Local Time: 05:34 PM Posts: 4,150 Offline	Quote: Originally Posted by philly c (original) well the engine managemnet light has now decided to go off so fingers crossed it should be alright now! Thanks for tyour help any ways Cheers Phil Well I hope so Mine has been off then back on, had a reset at the dealers. lasted about 1000 miles then came on gain So had a new oxy sensor fitted, light stayed off for about another 1000miles then came back on Now trying some suggestions made to me. New seal on oil filler and new petrol cap the cap sealwas cracked so fingers crossed it may cure it, althuogh not holding out much help Mine is the POWER and the GLORY UNI ON JACK OWNERS CLUB GB006

Mar 12th, 2007, 05:50 PM	#7 (permalink)
MINIMANIAUK MINI2 Sponsor Join Date: Mar 2006 Local Time: 05:34 PM Posts: 1,048 Offline	with a new manifold fitted, if it is a performance one, and it works, more air flow is produced via the exhaust, this causes the o2 sensor to think there is a fault in the cat as the flow exceeds the factory limit, the same is true if the sensor detects too little flow and the light comes on to tell you the cat is blocked/faulty www.minimaniauk.com

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Mar 11th, 2007, 05:12 PM	#3 (permalink)
philly c MINI2 Regular My Classifieds Join Date: Jun 2006 Location: Darlington Local Time: 05:34 PM Posts: 154 Offline	i disconnected the battery but not for very long and nothing happened the engine management light still came on. Will a re map be required to resolve the problem??

Mar 12th, 2007, 02:58 PM	#4 (permalink)
philly c MINI2 Regular My Classifieds Join Date: Jun 2006 Location: Darlington Local Time: 05:34 PM Posts: 154 Offline	well the engine managemnet light has now decided to go off so fingers crossed it should be alright now! Thanks for tyour help any ways Cheers Phil

Mar 12th, 2007, 05:47 PM	#6 (permalink)
philly c MINI2 Regular My Classifieds Join Date: Jun 2006 Location: Darlington Local Time: 05:34 PM Posts: 154 Offline	fingers crossed them mate

Mar 13th, 2007, 08:50 AM	#8 (permalink)
Richard Crofts THE STICK Join Date: Feb 2003 Location: Worcestershire WR15 Local Time: 05:34 PM Posts: 3,070 Offline	It will either go off on its own or you can reset the ECU and re-teach it on the new manifold. There a how to on ECU reset either here or NAM or motoringfile.

Mar 13th, 2007, 07:16 PM	#9 (permalink)
philly c MINI2 Regular My Classifieds Join Date: Jun 2006 Location: Darlington Local Time: 05:34 PM Posts: 154 Offline	My Ecu has been as good as gold scince i disconected the battery. Is it true that the ECU has to be disconnected over night about 16 hours though as this is the time it takes for the ECU memory to be lost??

Mar 14th, 2007, 02:17 AM	#10 (permalink)
oldmots MINI2 Regular Join Date: Jan 2007 Location: Eastern USA Local Time: 12:34 PM Posts: 256 Offline	Quote: Originally Posted by MINIMANIAUK (original) with a new manifold fitted, if it is a performance one, and it works, more air flow is produced via the exhaust, this causes the o2 sensor to think there is a fault in the cat as the flow exceeds the factory limit, the same is true if the sensor detects too little flow and the light comes on to tell you the cat is blocked/faulty I am no expert in MINI O2 sensors, but my experience with other cars, including my current XJ6 with 4 O2 sensors and four converters tells me that these sensors do not monitor gas flow, only O2 content in the flow. The only sensor I know of that could detect an exhaust restriction is a manifiold absolute pressure sensor, but the MINI does not have one. It is possible that the problem you are having may be related to a gasket leak or other mainfold leak either in the intake or exhaust, which will contaminate the airstream and trigger a fuel trim problem, possibly setting off the light.

Mar 26th, 2007, 09:33 AM	#11 (permalink)
philly c MINI2 Regular My Classifieds Join Date: Jun 2006 Location: Darlington Local Time: 05:34 PM Posts: 154 Offline	Light is back on again will make sure taht the bolts on the manifold havent come loose and are nice and tight but hope i ait going to have lots of problems! Would the gasget leaking at the rear exhaust cause a problem\|?

Mar 26th, 2007, 05:23 PM	#12 (permalink)
oldmots MINI2 Regular Join Date: Jan 2007 Location: Eastern USA Local Time: 12:34 PM Posts: 256 Offline	I suggest getting an OBDII scanner or code reader and find out what the light is for. You can then reset the light and see if it comes back.

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