MINI2

minky · May 12th, 2003, 06:10 PM

I rev my MC to 4k rpm and I shift up...

reach 4k rpm foot off accelerator and then drop the clutch and move up a gear.

Everytime I do this the engine\exhaust BroooOOOOms, as if I were still pressing the accenerator hard!!

help

Martin L · May 12th, 2003, 06:20 PM

Does the engine rev up while the clutch is depressed????

Maybe it's the "lift off" engine cackle you're hearing which is luuuurvly

minky · May 12th, 2003, 06:22 PM

yeah the engine revs up whilst teh clutch is down!
it only does this at 4k rpm above or below it does not produce the same sound!

Martin L · May 12th, 2003, 06:25 PM

Quote:

Originally posted by minky
yeah the engine revs up whilst teh clutch is down!

Sounds like there's a problem with the engine management system

I'd take it into the dealer if I were you.

GTmini · May 13th, 2003, 12:26 PM

I noticed that today too...I decided to push my MCS on the way home and few times I had the exhaust thunderclap...I actually thought it was kinda cool

. Up until now, I've never really noticed it before, but if it's a problem, I guess I'll have to point it out to my dealer also. When I first got my car, it sounded like it would backfire at lower revs every now and then too, but that went away...sound familiar? Glad I read about this before my Wednesday morning appointment. Guess I'll have to shift at over 4K again on my way to work tomorrow...to double check.

I wonder if that, the super black/sooty exhaust, and 23MPG tops are all related. Engine seems to like to run really, really rich. Combine that with the yo-yo, surge, CA fuel mixtures, and I have no clue what "normal" with this engine...

Paul · May 13th, 2003, 03:04 PM

GTMini, by design the Cooper S exhaust burbles and pops. And if you're lucky you can get it to 'bang'... I find that a satisfying din.

minky · May 13th, 2003, 05:00 PM

Glad its not just me! Yes well I am back at the dealers on teh 19th so see what happens. GTmini let me know what your dealer says about this BooooOOOoom at 4k RPM.

BTW have you read my other thread about the stutter of power from a cold start in second gear????

GTmini · May 14th, 2003, 01:17 AM

Quote:

Originally posted by Paul Mullett
GTMini, by design the Cooper S exhaust burbles and pops. And if you're lucky you can get it to 'bang'... I find that a satisfying din.

cool...glad it's normal since I do enjoy the various engine sounds. Makes it feel even sportier. haha. Just about every day I'm torn between listening to my music or just turning the radio off and enjoying the engine sounds. decisions, decisions...

On my 4000RPM-redline shifting this morning, I didn't get the boom, so it must have been a freak occurence yesterday.

..and I'm not sure if I read the 2nd gear cold stutter thread, but I notice the MCS doesn't always seem to do too well in second gear unless the revs are fairly up already...I just assume that second gear is just a bit taller than expected (for me, getting a smooth 1st-2nd shift is still kind of hit and miss on this car...sometimes the revs just really don't want to come down when shifting out of 1st if you go over 3500RPM)

sean rennie · May 15th, 2003, 01:08 AM

sounds like you guys have a lean burn fuel problem or low fuel pressure under boost or throttle overrun

minky · May 16th, 2003, 04:12 PM

sean - sounds terminal..... do you know if MINI owners have had this problem fixed?

minky · May 22nd, 2003, 03:49 PM

Folks got my car back from the dealer and they had diagnosed my problem from resonance from the back box. So they replacd it!

May 12th, 2003, 06:10 PM	#1
minky MINI2 Regular Join Date: Jul 2002 Location: Geordie Land Local Time: 09:31 PM Posts: 242 Offline	UPDATED - BoooOOOoooom Noise when changing up gears at 4k rpm I rev my MC to 4k rpm and I shift up... reach 4k rpm foot off accelerator and then drop the clutch and move up a gear. Everytime I do this the engine\exhaust BroooOOOOms, as if I were still pressing the accenerator hard!! help Last edited by minky : May 22nd, 2003 at 03:44 PM.

May 12th, 2003, 06:20 PM	#2 (permalink)
Martin L MINI defector Join Date: Mar 2002 Location: Harefield Local Time: 10:31 PM Posts: 13,642 Offline	Does the engine rev up while the clutch is depressed???? Maybe it's the "lift off" engine cackle you're hearing which is luuuurvly MINI, RX8 and MX5 - Done those............. It's now TTime Unofficial MINI2.com bean counter

May 12th, 2003, 06:25 PM	#4 (permalink)
Martin L MINI defector Join Date: Mar 2002 Location: Harefield Local Time: 10:31 PM Posts: 13,642 Offline	Quote: Originally posted by minky yeah the engine revs up whilst teh clutch is down! Sounds like there's a problem with the engine management system I'd take it into the dealer if I were you. MINI, RX8 and MX5 - Done those............. It's now TTime Unofficial MINI2.com bean counter

May 13th, 2003, 03:04 PM	#6 (permalink)
Paul Trained Monkey My Classifieds Join Date: Jan 2001 Location: Bedfordshire Local Time: 10:31 PM Posts: 41,274 Offline	GTMini, by design the Cooper S exhaust burbles and pops. And if you're lucky you can get it to 'bang'... I find that a satisfying din. There aint no party like my nana's tea party

May 15th, 2003, 01:08 AM	#9 (permalink)
sean rennie MINI2 Newbie Join Date: Nov 2002 Location: banstead ,surrey,eng Local Time: 09:31 PM Posts: 44 Offline	sounds like you guys have a lean burn fuel problem or low fuel pressure under boost or throttle overrun mini-me

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May 12th, 2003, 06:22 PM	#3 (permalink)
minky MINI2 Regular Join Date: Jul 2002 Location: Geordie Land Local Time: 09:31 PM Posts: 242 Offline	yeah the engine revs up whilst teh clutch is down! it only does this at 4k rpm above or below it does not produce the same sound!

May 13th, 2003, 12:26 PM	#5 (permalink)
GTmini MINI2 Senior Join Date: Jan 2003 Location: Los Angeles, CA Local Time: 02:31 PM Posts: 458 Offline	I noticed that today too...I decided to push my MCS on the way home and few times I had the exhaust thunderclap...I actually thought it was kinda cool . Up until now, I've never really noticed it before, but if it's a problem, I guess I'll have to point it out to my dealer also. When I first got my car, it sounded like it would backfire at lower revs every now and then too, but that went away...sound familiar? Glad I read about this before my Wednesday morning appointment. Guess I'll have to shift at over 4K again on my way to work tomorrow...to double check. I wonder if that, the super black/sooty exhaust, and 23MPG tops are all related. Engine seems to like to run really, really rich. Combine that with the yo-yo, surge, CA fuel mixtures, and I have no clue what "normal" with this engine...

May 13th, 2003, 05:00 PM	#7 (permalink)
minky MINI2 Regular Join Date: Jul 2002 Location: Geordie Land Local Time: 09:31 PM Posts: 242 Offline	Glad its not just me! Yes well I am back at the dealers on teh 19th so see what happens. GTmini let me know what your dealer says about this BooooOOOoom at 4k RPM. BTW have you read my other thread about the stutter of power from a cold start in second gear????

May 14th, 2003, 01:17 AM	#8 (permalink)
GTmini MINI2 Senior Join Date: Jan 2003 Location: Los Angeles, CA Local Time: 02:31 PM Posts: 458 Offline	Quote: Originally posted by Paul Mullett GTMini, by design the Cooper S exhaust burbles and pops. And if you're lucky you can get it to 'bang'... I find that a satisfying din. cool...glad it's normal since I do enjoy the various engine sounds. Makes it feel even sportier. haha. Just about every day I'm torn between listening to my music or just turning the radio off and enjoying the engine sounds. decisions, decisions... On my 4000RPM-redline shifting this morning, I didn't get the boom, so it must have been a freak occurence yesterday. ..and I'm not sure if I read the 2nd gear cold stutter thread, but I notice the MCS doesn't always seem to do too well in second gear unless the revs are fairly up already...I just assume that second gear is just a bit taller than expected (for me, getting a smooth 1st-2nd shift is still kind of hit and miss on this car...sometimes the revs just really don't want to come down when shifting out of 1st if you go over 3500RPM)

May 16th, 2003, 04:12 PM	#10 (permalink)
minky MINI2 Regular Join Date: Jul 2002 Location: Geordie Land Local Time: 09:31 PM Posts: 242 Offline	sean - sounds terminal..... do you know if MINI owners have had this problem fixed?

May 22nd, 2003, 03:49 PM	#11 (permalink)
minky MINI2 Regular Join Date: Jul 2002 Location: Geordie Land Local Time: 09:31 PM Posts: 242 Offline	Folks got my car back from the dealer and they had diagnosed my problem from resonance from the back box. So they replacd it!

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