Car stuttering at 2k ish - Drifting forum

lozza · 04-07-2009, 15:23

I'm not sure whether to worry about this or not as it comes and goes but the car (s14 standard engine apart from induction kit and exhaust) sometimes very badly stutters at around 2-3k which means theres practically no acceleration and it's hard to even pull away.

It's done it twice now, first time i had been driving it for about 5 minutes, it was a very hot day but i had only just stopped for traffic so it wasnt mega hot and it sounds like its running urm... burbly?? and drops to idle at 500 not 750.

Today it done it as soon as i started the car and went to pull away, it's not hot today but there is tonnes of rain, i managed to keep the car going for a little while and the problem seemed to go after about 5 minutes (so i guess when warm).

Any ideas?

skyludeboy · 04-07-2009, 16:15

screwed afm maybe?

lozza · 04-07-2009, 16:20

yeh thats being fiddled around with later on as my mate thought it could be that. any other ideas why it could be so intermittent?

Tony200 · 04-07-2009, 16:25

Boost leak? Check all the hoses clamps etc and also the intercooler particularly if your still running the wing mount.

lozza · 04-07-2009, 16:28

I'll check all that too but surely that'd be a constant problem if it was boost.

Tony200 · 04-07-2009, 16:34

Boost leaks can be temperamental especially if its a split hard pipe or something which only leaks on boost. The symptoms you describe definetly suggest boost leak (SXOC mode LOL).

Might be worth checking plugs/coils because if it sounds like a scooby at times it might not be firing on all cylinders.

lozza · 04-07-2009, 16:37

It does this way off boost though, but i'll be sure to check all pipes etc anyway.

Will also whip the plugs out, cheers!

Joe-sef · 04-07-2009, 17:43

sounds like a boost leak, they can be random, hope its just that and a quick fix,...

robbs · 04-07-2009, 18:07

sounds mostly like afm to me

**mitto** · 04-07-2009, 21:38

boost leak.
AFM.
plugs.
fuel filter.
coils.
fuel pump.
etc...

adam0bmx0 · 04-07-2009, 22:13

Yea fuel pump could be on its way out.

Pull the AFM and give it a spray with some carb cleaner.

Check plugs, but money is on a boost leak.

lozza · 05-07-2009, 13:40

Quote:

Originally Posted by adam0bmx0

Pull the AFM and give it a spray with some carb cleaner.

Did that yesterday so it rules that out next time it happens/if it happens.

Will check boostage issue today

thanks guys.

Is there any way of checking the fuel pump?

chris_s13 · 05-07-2009, 15:13

sorry to jack the thread lozza, i have a similar problem, but mines a stage one 91 s13, it runs normally, but so if i say it runs normally like this burr constantly, atm it runs burr . . pop burr . . popop . . burr it does this while just running. has new plugs at a distance of 0.8, has an exhaust leak at the end of the elbow to downpipe, its only just started doing it, if anyone can help would be appreciated!

Boss · 05-07-2009, 17:53

sounds like the fuel pump on the way out,

what sort of mileage is on it?

lozza · 05-07-2009, 21:04

Well i've checked all the pipes to the intercooler and cleaned the AFM so hopefully it wont happen again but i wont really know as it wasn't an ongoing problem lol

Mileage is over 100k

lozza · 17-07-2009, 23:31

buuuuuuuuump! it did it again. AFM has been cleaned out, to add to the info it also pops and bangs a lot more when it has this issue. So i'm fairly sure the AFM is fubared? but opinions please before i go buying. thanks.

**SteveC200** · 18-07-2009, 06:16

Have you run an ecu diagnostic?

gaz_moose · 18-07-2009, 10:47

egr valve?

Andy_f · 18-07-2009, 14:38

If it does it after its been sitting idling for a while (like traffic) it could be plugs fouling.

lozza · 18-07-2009, 15:46

Steve - i've not got the equipment but might know somebody who does.

Moose - whats that? Edit: i done my homework... where's that then? Edit: haha do i have to take the manifold off to get to it and what should i look for?

Andy - i'll be getting the plugs out tomorrow to have a look but i would have thought it would be happening more often if it was the plugs.

04-07-2009, 15:23	#1 (permalink)
lozza BDC Staff Join Date: Aug 2006 Location: Laindon, Essex Posts: 7,545	Car stuttering at 2k ish I'm not sure whether to worry about this or not as it comes and goes but the car (s14 standard engine apart from induction kit and exhaust) sometimes very badly stutters at around 2-3k which means theres practically no acceleration and it's hard to even pull away. It's done it twice now, first time i had been driving it for about 5 minutes, it was a very hot day but i had only just stopped for traffic so it wasnt mega hot and it sounds like its running urm... burbly?? and drops to idle at 500 not 750. Today it done it as soon as i started the car and went to pull away, it's not hot today but there is tonnes of rain, i managed to keep the car going for a little while and the problem seemed to go after about 5 minutes (so i guess when warm). Any ideas? __________________ Been 'flapping at the wheel' since summer 07 TEAM DRIFT BITCHES!

04-07-2009, 16:15	#2 (permalink)
skyludeboy ON A DRIVEWAY Join Date: Jan 2007 Location: LONDON TOWN Posts: 2,116	screwed afm maybe? __________________ FRONT YARD ENGINEERING

04-07-2009, 16:20	#3 (permalink)
lozza BDC Staff Join Date: Aug 2006 Location: Laindon, Essex Posts: 7,545	yeh thats being fiddled around with later on as my mate thought it could be that. any other ideas why it could be so intermittent? __________________ Been 'flapping at the wheel' since summer 07 TEAM DRIFT BITCHES!

04-07-2009, 16:28	#5 (permalink)
lozza BDC Staff Join Date: Aug 2006 Location: Laindon, Essex Posts: 7,545	I'll check all that too but surely that'd be a constant problem if it was boost. __________________ Been 'flapping at the wheel' since summer 07 TEAM DRIFT BITCHES!

04-07-2009, 16:37	#7 (permalink)
lozza BDC Staff Join Date: Aug 2006 Location: Laindon, Essex Posts: 7,545	It does this way off boost though, but i'll be sure to check all pipes etc anyway. Will also whip the plugs out, cheers! __________________ Been 'flapping at the wheel' since summer 07 TEAM DRIFT BITCHES!

04-07-2009, 16:25	#4 (permalink)
Tony200 dorifto kingu! Join Date: Apr 2005 Location: north london Posts: 807	Boost leak? Check all the hoses clamps etc and also the intercooler particularly if your still running the wing mount.

04-07-2009, 16:34	#6 (permalink)
Tony200 dorifto kingu! Join Date: Apr 2005 Location: north london Posts: 807	Boost leaks can be temperamental especially if its a split hard pipe or something which only leaks on boost. The symptoms you describe definetly suggest boost leak (SXOC mode LOL). Might be worth checking plugs/coils because if it sounds like a scooby at times it might not be firing on all cylinders.

04-07-2009, 18:07	#9 (permalink)
robbs FRANTIC Join Date: Apr 2005 Location: FAREHAM (Almost-Portsmouth-ish) Posts: 6,323	sounds mostly like afm to me __________________

04-07-2009, 21:38	#10 (permalink)
mitto -NIGHTSPIRT FAMILY- Join Date: Jul 2004 Location: - ALBION - Posts: 7,500	boost leak. AFM. plugs. fuel filter. coils. fuel pump. etc... __________________ - RUNNING FOREVER - STRAATGEWELD! -

04-07-2009, 22:13	#11 (permalink)
adam0bmx0 dorifto kingu! Join Date: Aug 2006 Location: Near Plymouth, Devon Posts: 810	Yea fuel pump could be on its way out. Pull the AFM and give it a spray with some carb cleaner. Check plugs, but money is on a boost leak. __________________

05-07-2009, 15:13	#13 (permalink)
chris_s13 doughnutter Join Date: Apr 2009 Posts: 49	sorry to jack the thread lozza, i have a similar problem, but mines a stage one 91 s13, it runs normally, but so if i say it runs normally like this burr constantly, atm it runs burr . . pop burr . . popop . . burr it does this while just running. has new plugs at a distance of 0.8, has an exhaust leak at the end of the elbow to downpipe, its only just started doing it, if anyone can help would be appreciated!

05-07-2009, 17:53	#14 (permalink)
Boss gripper Join Date: Mar 2007 Posts: 9	sounds like the fuel pump on the way out, what sort of mileage is on it?

05-07-2009, 21:04	#15 (permalink)
lozza BDC Staff Join Date: Aug 2006 Location: Laindon, Essex Posts: 7,545	Well i've checked all the pipes to the intercooler and cleaned the AFM so hopefully it wont happen again but i wont really know as it wasn't an ongoing problem lol Mileage is over 100k __________________ Been 'flapping at the wheel' since summer 07 TEAM DRIFT BITCHES!

17-07-2009, 23:31	#16 (permalink)
lozza BDC Staff Join Date: Aug 2006 Location: Laindon, Essex Posts: 7,545	buuuuuuuuump! it did it again. AFM has been cleaned out, to add to the info it also pops and bangs a lot more when it has this issue. So i'm fairly sure the AFM is fubared? but opinions please before i go buying. thanks. __________________ Been 'flapping at the wheel' since summer 07 TEAM DRIFT BITCHES!

18-07-2009, 06:16	#17 (permalink)
SteveC200 talent bypass Join Date: Jul 2004 Location: Essex Posts: 7,481	Have you run an ecu diagnostic? __________________

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18-07-2009, 10:47	#18 (permalink)
gaz_moose .MTM. Join Date: Jun 2005 Location: under your bed Posts: 4,467	egr valve?

18-07-2009, 14:38	#19 (permalink)
Andy_f S-bodied again Join Date: Sep 2005 Location: Redditch/Solihull Posts: 2,915	If it does it after its been sitting idling for a while (like traffic) it could be plugs fouling. __________________

18-07-2009, 15:46	#20 (permalink)
lozza BDC Staff Join Date: Aug 2006 Location: Laindon, Essex Posts: 7,545	Steve - i've not got the equipment but might know somebody who does. Moose - whats that? Edit: i done my homework... where's that then? Edit: haha do i have to take the manifold off to get to it and what should i look for? Andy - i'll be getting the plugs out tomorrow to have a look but i would have thought it would be happening more often if it was the plugs. __________________ Been 'flapping at the wheel' since summer 07 TEAM DRIFT BITCHES! Last edited by lozza; 18-07-2009 at 15:51.