Hiccup at approx 5k rpm - MINI Cooper Forum
Go Back   MINI Cooper Forum > Model Specific MINI Forums > MINI Cooper S > First Generation MINI Cooper S


First Generation MINI Cooper S MINI Cooper S 2002 - 2006

Mini2.com is the premier Mini Cooper Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Rate Thread
  #1 (permalink)  
Old Jul 3rd, 2014, 07:04 PM
MINI2 Newbie
Offline
 
Join Date: Apr 2009
Posts: 14
Local Time: 09:08 AM
United Kingdom
Hiccup at approx 5k rpm

Hi
I'm starting to give up on my mini some advice would be greatly appreciated

I have a 06 plate Mini Cooper s 75k miles 15% pulley, cooler plugs shorter belt
Mods done around 500 miles ago

When I accelerate hard as soon as the revs would reach the top end my car would lose power and go Into limp mode, I took it to the local garage where they done a diagnostics test and was showing a faulty throttle body, so had it changed.
I collected my car and was driving fine for a day but then the problem was still there but the car wouldn't go into limp mode, no fault codes were showing on diagnostics. I took it back to the garage and was told it could be the coil pack and ignition leads, so had these changed as I still had the factory leads and coil pack. My spark plugs were checked and swapped around

I've picked up my car it's a lot better but it's still
Not right. Now when I accelerate hard there seems to be a small hiccup around 5000 rpm, no fault codes are being picked up
Any suggestions please

John

Last edited by johnworks; Jul 3rd, 2014 at 11:17 PM.
Reply With Quote
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old Jul 4th, 2014, 06:45 AM
heathwebbo's Avatar
MINI2 Regular
Online
 
Join Date: Feb 2014
Location: Burton on Trent
Posts: 215
Local Time: 08:08 AM
United Kingdom Male
The first problem you had sounds like a faulty bypass valve & are quite common to fail if its still on the original one at 75k. New bypass valves are around 80ish & should take around an hour or two to change so not too expensive to have done
I think you need to go to a garage though with more knowledge of the cooper s
Reply With Quote
  #3 (permalink)  
Old Jul 4th, 2014, 03:11 PM
MINI2 Master
Offline
 
Join Date: Feb 2011
Location: South london
Posts: 1,190
Local Time: 09:08 AM
United Kingdom Male
Hi ya

Did you reset the ECM when you done the mods, if not it might be worth doing it this first.
Any engine mods always reset the ECM. Just disconnect the battery neg then poss leave it disconnected for 20-30 min the poss then neg to reconnect. The ECM will take about a tank and a half of fuel to relearn the engine perimeters, it may be seeing an over boost and putting it in to limp mod or even running lean seeing some det and putting it to limp

Does the car feel slow up to 5k or does it just hit a wall or tail off as you get to 5k

You can check the bypass valve with out removing it from the car, find the bpv and push up on the arm In to the diaphragm if you can feel the spring and springs back it should be ok. But there are mods to do to them once you fix the main problem

I would check all your vacuum pipes to start with bpv vacuum link pipe, fuel pressure regulator. Map sensor tube the crack.

Make shore your intercooler is on correctly

What fuel you running on

Where about's are you in uk
Reply With Quote
  #4 (permalink)  
Old Jul 5th, 2014, 04:30 PM
MINI2 Newbie
Offline
 
Join Date: Apr 2009
Posts: 14
Local Time: 09:08 AM
United Kingdom
Thanks for your replies
I will try the battery reset and check the bpv. Where would I find the bpv?
When I reach around 5k it feels there is no power, ithe car accelerates smoothly up til 5k and then a bit of a hiccup, it's not there all the time, then accelerates as normal til the red line. It's almost the same feeling as when the traction light comes on, but midway through accelerating, if that makes sense.
I use normal fuel normally, filled up with shell nitro but that hasn't made a difference


I'm based in the West Midlands mate
Reply With Quote
  #5 (permalink)  
Old Jul 5th, 2014, 05:24 PM
MINI2 Newbie
Offline
 
Join Date: Apr 2009
Posts: 14
Local Time: 09:08 AM
United Kingdom
Ok found the bypass valve, a bit of effort needed to push up on the arm but it sprigs back strong,
Reply With Quote
  #6 (permalink)  
Old Oct 1st, 2014, 11:04 PM
MINI2 Newbie
Offline
 
Join Date: Apr 2009
Posts: 14
Local Time: 09:08 AM
United Kingdom
I got this sorted so Just an update on this post to help people with a similar issue
The problem started to get worse, with the car cutting out after starting, the revs would drop as soon as started and then the engine would cut out. I had to give it a couple of goes till it stayed started. Also the car would go into limp at lower revs maybe around 2500k. This time the traction light would stay on and the check engine soon light. It was really struggling climbing up hills. It became very tricky to drive.

I had the map sensor replaced and my car is pulling very strong, no flat spots and no limp modes so far.

I hope this helps somebody
Reply With Quote
Sponsored Links
Advertisement
 
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Rate This Thread
Rate This Thread:

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
Trackbacks are On
Pingbacks are On
Refbacks are On

» Recent Threads
Automatic, won't shift out of park
Jun 30th, 2014 07:51 PM
Last post by Jazelmarie
Today 12:00 AM
2 Replies, 869 Views
2001 Bini Central Locking key fob pairing?
Yesterday 11:03 AM
Last post by mab01uk
Yesterday 10:44 PM
1 Replies, 169 Views
No spray on windshield wiper
Yesterday 08:54 PM
by mom7x
Last post by mab01uk
Yesterday 10:38 PM
1 Replies, 97 Views
Storage Compartment Pack
May 29th, 2008 03:51 PM
Last post by sirron
Yesterday 10:19 PM
6 Replies, 6,756 Views
Automatic transmission - settle a bet!
Oct 18th, 2014 06:05 PM
Last post by Sejanus
Yesterday 09:28 PM
6 Replies, 336 Views
Average life in miles for 2nd Gen mini clutch
Aug 12th, 2014 10:40 PM
Last post by mom7x
Yesterday 08:40 PM
3 Replies, 811 Views
2004 mini one aftermarket stereo
Yesterday 08:31 PM
Last post by Gee_Kimberley
Yesterday 08:31 PM
0 Replies, 98 Views
JCW intercooler intake grille.
Yesterday 08:06 PM
Last post by davidscott
Yesterday 08:06 PM
0 Replies, 99 Views
JCW/Sparco seats and rear facing baby seat?
Yesterday 07:16 AM
Last post by widetyres
Yesterday 07:26 PM
2 Replies, 263 Views
Water Ingress in the boot again
Jan 20th, 2008 10:02 AM
Last post by originalracingsnake
Yesterday 05:13 PM
2 Replies, 3,484 Views
Water in boot where tool kit is
Feb 5th, 2014 11:17 AM
Last post by originalracingsnake
Yesterday 05:10 PM
2 Replies, 933 Views
water in rear boot floor tool area
Mar 10th, 2013 10:50 AM
Last post by originalracingsnake
Yesterday 05:02 PM
8 Replies, 3,103 Views
My Mini Mods - thoughts and comments
Jul 18th, 2014 04:45 AM
Last post by jeshopping88
Yesterday 01:55 PM
1 Replies, 1,288 Views
2009 Cooper D Engine Problems (Turbo Lag)
Jul 11th, 2010 10:45 AM
by Bozzer
Last post by rolty
Yesterday 12:17 PM
83 Replies, 39,667 Views
DPF light but no fault codes
Yesterday 11:33 AM
by DJ-R56
Last post by DJ-R56
Yesterday 11:33 AM
0 Replies, 134 Views
R56 Mini One Engine Rattle
Yesterday 11:13 AM
Last post by In Reverse
Yesterday 11:13 AM
0 Replies, 172 Views
Two Spoke Steering Wheel swap
Oct 14th, 2014 12:13 PM
Last post by peteski2014
Yesterday 10:07 AM
5 Replies, 589 Views
Erratic engine speed when cold
Yesterday 09:56 AM
Last post by tyred bob
Yesterday 09:56 AM
0 Replies, 145 Views
Engine cranks but won't start
Sep 26th, 2014 01:49 PM
Last post by Cooperbob37
Yesterday 02:51 AM
1 Replies, 692 Views
Trying to figure out where the last connector goes???
Aug 27th, 2014 10:28 PM
by Eirhead
Last post by Cooperbob37
Yesterday 02:48 AM
1 Replies, 450 Views
» Premium
» Auto Insurance
Wheel & Tire Center

Powered by vBadvanced CMPS v3.2.1

All times are GMT. The time now is 08:08 AM.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
SEO by vBSEO 3.3.2