cars running out of steam after 4.5k

Reply Subscribe

Thread Tools

Search this Thread

02 June 2009, 09:43 PM

scoobyhurky

Scooby Regular

Thread Starter

iTrader: (6)

Join Date: Jan 2007

Location: staffordshire

Posts: 1,108

Likes: 0

Received 0 Likes on 0 Posts

cars running out of steam after 4.5k

hi i have noticed not all the time the car is running out of steam after 4.5k rpm do any of you know what this might be

Reply Like

02 June 2009, 09:49 PM

Slowboy Racing

Former Sponsor

Join Date: Dec 2005

Location: 10.68 QT mile in 2007 2.33 Type R ** Current 2002 Spec C 2.33 Track prepped.

Posts: 1,658

Likes: 0

Received 0 Likes on 0 Posts

First stop, check that boost is being made and held as it should.

Reply Like

02 June 2009, 09:56 PM

scoobyhurky

Scooby Regular

Thread Starter

iTrader: (6)

Join Date: Jan 2007

Location: staffordshire

Posts: 1,108

Likes: 0

Received 0 Likes on 0 Posts

Quote:

Originally Posted by *Un-Ink*

First stop, check that boost is being made and held as it should.

whats the best way ? to fit a boost gauge or is there another way?

Reply Like

02 June 2009, 11:29 PM

joz8968

Scooby Regular

iTrader: (13)

Join Date: Aug 2006

Location: Leicester

Posts: 23,761

Likes: 0

Received 8 Likes on 6 Posts

Have you got an erratic speedo needle? Does the lack of power from 4.5k equate to the needle dipping to 0mph? If so, that's the problem.

When the speedo plays up, the gearbox sensor tells the ECU to cut revs to 4.5k...

Reply Like

02 June 2009, 11:33 PM

joz8968

Scooby Regular

iTrader: (13)

Join Date: Aug 2006

Location: Leicester

Posts: 23,761

Likes: 0

Received 8 Likes on 6 Posts

Or it could be, for whatever reason, that the ECU's decided to go into limp-home mode (although I think that's limted to 3.5k revs).

Why not try a simple reset of the ECU first, before invesigating further?...

Reply Like

03 June 2009, 09:21 PM

scoobyhurky

Scooby Regular

Thread Starter

iTrader: (6)

Join Date: Jan 2007

Location: staffordshire

Posts: 1,108

Likes: 0

Received 0 Likes on 0 Posts

its not all the time and there is no problem with the speedo

Reply Like

03 June 2009, 09:49 PM

JDM_Stig

Scooby Regular

iTrader: (3)

Join Date: Feb 2009

Location: Mount Weather

Posts: 5,840

Likes: 12

Received 41 Likes on 33 Posts

does the revs goo up but the car doesnt get any quicker?
maybe clutch slipping ?

Reply Like

Trending Topics

Tried to Cancel Membership month ago.

3

117
What is it with this forum and abuse?

146

5.2k
Interior lights and central locking dead

2

107

03 June 2009, 10:01 PM

scoobyhurky

Scooby Regular

Thread Starter

iTrader: (6)

Join Date: Jan 2007

Location: staffordshire

Posts: 1,108

Likes: 0

Received 0 Likes on 0 Posts

no its defo not the clutch slipping the revs dont increase faster but you can feel the car slow down . but today when i drove home it was fine

do you think it could be the dump valve as i bought the car with one on it was bought from pj motorsport

Reply Like

03 June 2009, 11:00 PM

Marx Mcrae

Scooby Regular

iTrader: (4)

Join Date: May 2003

Location: Doncaster, UK

Posts: 2,567

Likes: 0

Received 0 Likes on 0 Posts

DV could be leaking, what make of DV is it?
Does the car splutter or hesitate when it gets to 4.5k revs?

Reply Like

04 June 2009, 02:27 PM

#10

ReggieMY99

Scooby Regular

Join Date: Oct 2004

Posts: 670

Likes: 0

Received 0 Likes on 0 Posts

ecu retarding ignition because of knock? seen that before and it will feel like you loose power

what fuel do you use ?

Reply Like

04 June 2009, 03:23 PM

#11

scoobyhurky

Scooby Regular

Thread Starter

iTrader: (6)

Join Date: Jan 2007

Location: staffordshire

Posts: 1,108

Likes: 0

Received 0 Likes on 0 Posts

Quote:

Originally Posted by Marx Mcrae

DV could be leaking, what make of DV is it?
Does the car splutter or hesitate when it gets to 4.5k revs?

it just seems to slow down like if the boost has dropped and as for the dv it doesnt say a brand i just know that the last owner got it from pj motorsport

Quote:

Originally Posted by ReggieMY99

ecu retarding ignition because of knock? seen that before and it will feel like you loose power

what fuel do you use ?

tesco super

Last edited by scoobyhurky; 04 June 2009 at 03:25 PM.

Reply Like

05 June 2009, 02:13 PM

#12

stanmo

Scooby Regular

iTrader: (1)

Join Date: Jul 2002

Location: Suffolk

Posts: 503

Likes: 0

Received 0 Likes on 0 Posts

I've had a couple of dodgy batches of tesco super, car stopped accelerating suddenly around 4-5k on my 99.
I don't use it anymore, tend to stick to V-power or BP super if I can't get Shell.
Problem went away after I stopped using it.

Hopefully you've got enough leads to follow up.

Reply Like

23 September 2009, 11:49 PM

#13

rs_cos

Scooby Regular

iTrader: (1)

Join Date: Jun 2009

Posts: 79

Likes: 0

Received 0 Likes on 0 Posts

Having the same problem with mine. But it felt like it wasn't going any quicker when on boost. Then I launched it in 1st gear and the clucth pedal got stuck to the floor and I had to pull it back up. Can anyone shine some light on the problem I'm having.

Thanks in advance.

Charlie.