MINI2

herbie hind · Jun 25th, 2006, 12:21 AM

anyone having cold start issues ? could be map or coolant temp sensors? also anyone got a alta exhaust header and how you like it?

GBMINI · Jun 25th, 2006, 12:43 AM

New England summer gas screws the MINI engine mapping.
Been discussed at great length on MINI2 and my weblog:
http://www.gbmini.net/mtblog/archive.../bad_gas.shtml
http://www.mini2.com/forum/faults-fi...-problems.html

Basically it seems that MINI uses a sensor that doesn't work when cold, so the engine computer "guesses" and gets it wrong when the gas formulation changes dramatically (as it does winter->summer & summer->winter here).

Trying a lower octane gas (89) might help.

herbie hind · Jun 25th, 2006, 12:49 AM

thought the o2 sensors were heated to prevent this?

what other sensors other than coolant temp, map, and ambient temp are there in regard to cold start?

herbie hind · Jun 25th, 2006, 12:59 AM

i was thinking... not always a good thing, why dont my neighbors plane old american cars have this problem ? from yourlog its obvious im not alone on this one but just foreign cars?

pocketrocketowner · Jun 25th, 2006, 02:44 AM

I am convinced all MINI cold start issues have to do with people not heeding the instructions (well hidden by the way) that you should wait a few seconds after turning the contact on before hitting the starter. This allows the fuel pump to fully load all circuits in the injection system. I know that I had those issues and once I built the delay into mu starting routine, never looked back (unless of course I am in a hurry get in and hit the starter right ogg on a cold morning.....)

herbie hind · Jun 25th, 2006, 02:53 AM

actually i do that now as i too gave it consideration but not only does the car start hard .,it run awful at first even after idle stabilizes thanks for the help.

GBMINI · Jun 25th, 2006, 07:53 PM

I also tried waiting 5s between key position 2 and engine turn-over; it made no difference

pocketrocketowner · Jun 26th, 2006, 02:12 AM

Looks to me then that a trip to the dealer is what is needed......

Jun 25th, 2006, 12:21 AM	#1
herbie hind MINI2 Senior Join Date: Jun 2006 Location: providence subburbs Local Time: 12:16 PM Posts: 449 Offline	hard cold starts running lean? anyone having cold start issues ? could be map or coolant temp sensors? also anyone got a alta exhaust header and how you like it?

Jun 25th, 2006, 12:43 AM	#2 (permalink)
GBMINI MINI2 Master Join Date: Jun 2002 Location: Gloucester, MA, USA Local Time: 12:16 PM Posts: 7,568 Offline	New England summer gas screws the MINI engine mapping. Been discussed at great length on MINI2 and my weblog: http://www.gbmini.net/mtblog/archive.../bad_gas.shtml http://www.mini2.com/forum/faults-fi...-problems.html Basically it seems that MINI uses a sensor that doesn't work when cold, so the engine computer "guesses" and gets it wrong when the gas formulation changes dramatically (as it does winter->summer & summer->winter here). Trying a lower octane gas (89) might help. Ian C. Gloucester, MA, USA (UK expat) driving GPMINI and Convertible GBMINI#6

Jun 25th, 2006, 07:53 PM	#7 (permalink)
GBMINI MINI2 Master Join Date: Jun 2002 Location: Gloucester, MA, USA Local Time: 12:16 PM Posts: 7,568 Offline	I also tried waiting 5s between key position 2 and engine turn-over; it made no difference Ian C. Gloucester, MA, USA (UK expat) driving GPMINI and Convertible GBMINI#6

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Jun 25th, 2006, 12:49 AM	#3 (permalink)
herbie hind MINI2 Senior Join Date: Jun 2006 Location: providence subburbs Local Time: 12:16 PM Posts: 449 Offline	thought the o2 sensors were heated to prevent this? what other sensors other than coolant temp, map, and ambient temp are there in regard to cold start?

Jun 25th, 2006, 12:59 AM	#4 (permalink)
herbie hind MINI2 Senior Join Date: Jun 2006 Location: providence subburbs Local Time: 12:16 PM Posts: 449 Offline	i was thinking... not always a good thing, why dont my neighbors plane old american cars have this problem ? from yourlog its obvious im not alone on this one but just foreign cars?

Jun 25th, 2006, 02:44 AM	#5 (permalink)
pocketrocketowner Best Personal Regards Join Date: Dec 2004 Location: Ile de Vaux, France Local Time: 05:16 PM Posts: 2,037 Offline	I am convinced all MINI cold start issues have to do with people not heeding the instructions (well hidden by the way) that you should wait a few seconds after turning the contact on before hitting the starter. This allows the fuel pump to fully load all circuits in the injection system. I know that I had those issues and once I built the delay into mu starting routine, never looked back (unless of course I am in a hurry get in and hit the starter right ogg on a cold morning.....)

Jun 25th, 2006, 02:53 AM	#6 (permalink)
herbie hind MINI2 Senior Join Date: Jun 2006 Location: providence subburbs Local Time: 12:16 PM Posts: 449 Offline	actually i do that now as i too gave it consideration but not only does the car start hard .,it run awful at first even after idle stabilizes thanks for the help.

Jun 26th, 2006, 02:12 AM	#8 (permalink)
pocketrocketowner Best Personal Regards Join Date: Dec 2004 Location: Ile de Vaux, France Local Time: 05:16 PM Posts: 2,037 Offline	Looks to me then that a trip to the dealer is what is needed......

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