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Author Jolting/juddering when drive
Jakey
Premium Member

Registered: 4th Jun 07
Location: Sandbach
User status: Offline
18th Feb 09 at 08:12   View Garage View User's Profile U2U Member Reply With Quote

Right, this is quite difficult to explain but ill try.

It started the other day, driving down a bypass, went to overtake a car dropped a gear, then as i went to overtake the car juddered and shaked kinda thing, like something was restricting it or stopping it accelerating.

I thought at first is was the fuel pump not getting fuel as the light was on, but i then went to fill up and it still occurs.

It also happens if i set off, come off the clutch and put my foot down. The car just doesnt seem to move or accelerates really slow, as if i was in 5th doing 70.


Sorry for the shit diagnosis.

Jakey
moka
Member

Registered: 11th Mar 06
User status: Offline
18th Feb 09 at 09:25   View User's Profile U2U Member Reply With Quote

sounds like air is being restricted? maybe airflow sensor? do you have an induction kit?

[Edited on 18-02-2009 by moka]
Jakey
Premium Member

Registered: 4th Jun 07
Location: Sandbach
User status: Offline
18th Feb 09 at 09:27   View Garage View User's Profile U2U Member Reply With Quote

No mate, just a drilled airbox and panel filter.
Jenko_Sport
Member

Registered: 25th May 06
Location: Stoke-on-Trent
User status: Offline
18th Feb 09 at 12:44   View User's Profile U2U Member Reply With Quote

Is it below a certain rpm?
Jakey
Premium Member

Registered: 4th Jun 07
Location: Sandbach
User status: Offline
18th Feb 09 at 12:48   View Garage View User's Profile U2U Member Reply With Quote

No mate, does it all the way to 6800
Jenko_Sport
Member

Registered: 25th May 06
Location: Stoke-on-Trent
User status: Offline
18th Feb 09 at 12:49   View User's Profile U2U Member Reply With Quote

Sound like its missing at all?
N3CRO
Member

Registered: 12th Apr 07
Location: Sandy, Bedfordshire
User status: Offline
18th Feb 09 at 12:50   View User's Profile U2U Member Reply With Quote

Air Flow Meter by the sounds of it.
Jakey
Premium Member

Registered: 4th Jun 07
Location: Sandbach
User status: Offline
18th Feb 09 at 12:55   View Garage View User's Profile U2U Member Reply With Quote

Apparently there isn't an AFM on my Corsa?
Torsa g
Member

Registered: 20th Sep 07
Location: Tamworth. Rides: An OSTRIDGE
User status: Offline
18th Feb 09 at 13:07   View User's Profile U2U Member Reply With Quote

check for air leaks, blocked cat if you have one, vacuum leaks, blocked injector.

is the eml coming on at all
Jakey
Premium Member

Registered: 4th Jun 07
Location: Sandbach
User status: Offline
18th Feb 09 at 13:11   View Garage View User's Profile U2U Member Reply With Quote

EML hasnt come on no.

How would i check the cat and injectors?
N3CRO
Member

Registered: 12th Apr 07
Location: Sandy, Bedfordshire
User status: Offline
18th Feb 09 at 13:12   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by Jakey
Apparently there isn't an AFM on my Corsa?


There should be
Jakey
Premium Member

Registered: 4th Jun 07
Location: Sandbach
User status: Offline
18th Feb 09 at 13:13   View Garage View User's Profile U2U Member Reply With Quote

1999 1.4 sport?
Jenko_Sport
Member

Registered: 25th May 06
Location: Stoke-on-Trent
User status: Offline
18th Feb 09 at 13:15   View User's Profile U2U Member Reply With Quote

MAP sensor.
N3CRO
Member

Registered: 12th Apr 07
Location: Sandy, Bedfordshire
User status: Offline
18th Feb 09 at 13:22   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by Jakey
1999 1.4 sport?


Mines a 1998 1.0 12v and has an AFM. I thought all post 97's have them

[Edited on 18-02-2009 by TheNobleOne]
tom_simes
Show Staff
Organiser: South Wales
Premium Member


Avatar

Registered: 12th Jan 05
Location: Undy, Newport Drives: Skoda Octavia vRS estate
User status: Offline
18th Feb 09 at 13:37   View Garage View User's Profile U2U Member Reply With Quote

quote:
Originally posted by TheNobleOne
quote:
Originally posted by Jakey
1999 1.4 sport?


Mines a 1998 1.0 12v and has an AFM. I thought all post 97's have them

[Edited on 18-02-2009 by TheNobleOne]

Only 1.0 12v and 1.2 16v have a MAF - the 1.4 and 1.6 16v work off a MAP sensor, which works completely differently.
Jakey
Premium Member

Registered: 4th Jun 07
Location: Sandbach
User status: Offline
18th Feb 09 at 14:23   View Garage View User's Profile U2U Member Reply With Quote

Think it could be the MAP sensor?
Torsa g
Member

Registered: 20th Sep 07
Location: Tamworth. Rides: An OSTRIDGE
User status: Offline
18th Feb 09 at 14:38   View User's Profile U2U Member Reply With Quote

three pin green connector that plugs into a black square thing next to the header tank, with a black pipe that goes into the inlet,
Jakey
Premium Member

Registered: 4th Jun 07
Location: Sandbach
User status: Offline
18th Feb 09 at 14:41   View Garage View User's Profile U2U Member Reply With Quote

How do you check if its that?
Jakey
Premium Member

Registered: 4th Jun 07
Location: Sandbach
User status: Offline
18th Feb 09 at 16:55   View Garage View User's Profile U2U Member Reply With Quote

Anyone?
Torsa g
Member

Registered: 20th Sep 07
Location: Tamworth. Rides: An OSTRIDGE
User status: Offline
18th Feb 09 at 16:58   View User's Profile U2U Member Reply With Quote

if theres no eml get another one and check, but first check there is no splits in the pipe that is connect to the map sensor first
Jakey
Premium Member

Registered: 4th Jun 07
Location: Sandbach
User status: Offline
18th Feb 09 at 17:00   View Garage View User's Profile U2U Member Reply With Quote

So just check all the pipe and see if its split? If its not a should get another one?
Alan-16V
Member

Registered: 5th Apr 08
Location: North Wales
User status: Offline
18th Feb 09 at 19:03   View User's Profile U2U Member Reply With Quote

might be an idea to give it a service ( fuel filter, plugs and leads) and see if that makes any differance, while doing this, check all the vacume pipes for spits. if this makes no difference then your best bet would be to put it on a diagnostic computer to get the live data checked
boz_gsi
Member

Registered: 12th Apr 07
Location: stoke-on-trent
User status: Offline
18th Feb 09 at 19:16   View User's Profile U2U Member Reply With Quote

sure it isnt just missfiring?
Jakey
Premium Member

Registered: 4th Jun 07
Location: Sandbach
User status: Offline
18th Feb 09 at 19:26   View Garage View User's Profile U2U Member Reply With Quote

If it is missfiring it only does it when i put my foot down
Kevxx
Member

Registered: 14th May 08
Location: Forfar, Angus
User status: Offline
18th Feb 09 at 19:28   View User's Profile U2U Member Reply With Quote

your spark plugs getting wet or anything?

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