eazy187
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Registered: 10th Aug 06
Location: Inverness Drives:Focus/Firestorm
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there is a problem when i start the car after it has been left for a while. it starts fine but you can smell petrol outside the car (sometimes inside).
It moves the revs up and down slightly by itself but no enough to show on the gauge. it holds at about 1.1Krpm for a few minuites then drops to 900rpm.
if you try to pull off straight away it crawls along, juddering and sometimes there is a knocking sound from the drivers side.
If i leave it to warm up for about 3 mins its fine, although it sometimes hesitates, usually when you try to pull out quickly 
also, if you rev higher than about 3.5 to 4Krpm, the EM light comes on and it accelerates slower than usual.
i did a search and i think it sounds like cold start enrichment.
thanks for taking the time to read this, if you have, any comments appreciated, thanks
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Ben G
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Registered: 12th Jan 07
Location: Essex
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it holds at about 1.1Krpm for a few minuites then drops to 900rpm.
^^ thats the choke. it's normal.
you haven't said what engine it is.
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Marc
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Registered: 11th Aug 02
Location: York
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Differant car, but my revs are the same when cold. Blip the throttle and you'll see it drop.
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eazy187
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Registered: 10th Aug 06
Location: Inverness Drives:Focus/Firestorm
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sorry X12XE
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Ben G
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Registered: 12th Jan 07
Location: Essex
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as usual i will say AFM sensor as i have exactly the same engine as that.
if you have an induction kit, it could cause the hesistation if it's not fitted properly or not getting enough cold air.
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Scotty C
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Registered: 6th Nov 05
Location: Kidderminster Drives: 1.6 16v Sport
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quote:
Originally posted by Ben G
it holds at about 1.1Krpm for a few minuites then drops to 900rpm.
^^ thats the choke. it's normal.
you haven't said what engine it is.
Fuel injected cars don't have chokes.
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Ben G
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Registered: 12th Jan 07
Location: Essex
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funny.. everyone said my revs go from 1.1k revs to under 1k because the automatic choke goes after 2 mins
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eazy187
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Registered: 10th Aug 06
Location: Inverness Drives:Focus/Firestorm
User status: Offline
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quote:
Originally posted by Ben G
as usual i will say AFM sensor as i have exactly the same engine as that.
if you have an induction kit, it could cause the hesistation if it's not fitted properly or not getting enough cold air.
i did cut the side off my air box, but im not sure if thats when it started.
i sort of patched it up with an ice cream tub lid but that hasn't done anything 
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eazy187
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Registered: 10th Aug 06
Location: Inverness Drives:Focus/Firestorm
User status: Offline
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could there be a problem with my cold start?
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eazy187
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Registered: 10th Aug 06
Location: Inverness Drives:Focus/Firestorm
User status: Offline
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il get this and see if it makes a difference
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Vaux Lad
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Registered: 15th Dec 04
Location: Stoke-on-Trent
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quote:
Originally posted by Ben G
funny.. everyone said my revs go from 1.1k revs to under 1k because the automatic choke goes after 2 mins
A choke is that, a choke. It chokes the engine of air.
A ecu just add's more air(opens icv) to make the engine idle higher, making it warm up quicker. They have no choke.
[Edited on 25-05-2007 by Vaux Lad]
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mikehiow
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Registered: 12th May 05
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This "FI engines don't have chokes" is just pure pedant talk, technically they don't, but it's still called an automatic choke by many.....
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corsa_rob
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Registered: 22nd Jan 06
Location: Birmingham
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lmao its the automatic choke coming in...shudnt just get in any car and drive it straight away spec revving high...if u do this in a turbo car it will be bost in months lol...just warm ure car up on idle for 1 minute or so...rev low at first then it will warm up and be normal
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mikehiow
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Registered: 12th May 05
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regardless of that being the 'automatic choke', it still shouldn't be juddery on start etc.
Do paperclip test and get us fault codes...
However, I have no suggestions on what the problem actually is, but sounds like it's running too rich, perhaps CTS, lambda, AFM?
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eazy187
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Registered: 10th Aug 06
Location: Inverness Drives:Focus/Firestorm
User status: Offline
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cant do paper clip on X12XE. today after i started i tried to rev it to warm up faster and instead of rising the revs kept dropping, at one point almost stalling till i came off the pedal
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eazy187
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Registered: 10th Aug 06
Location: Inverness Drives:Focus/Firestorm
User status: Offline
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if you keep the pedal held down it does actually stall. i cleaned my air filter and it seems to have stopped the EM light coming on at 4Krpm but it still comes on under load.
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eazy187
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Registered: 10th Aug 06
Location: Inverness Drives:Focus/Firestorm
User status: Offline
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there is a fast 'ticking' sound coming from around the inlet. is this from the ICV and if so does it always make that noise? car always stalls now but when you start again it stays on but with same problems.
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Jake
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Registered: 24th Jan 05
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ticking is probably the injectors
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eazy187
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Registered: 10th Aug 06
Location: Inverness Drives:Focus/Firestorm
User status: Offline
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does that mean theres a problem with them?
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Jacko751
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Registered: 30th May 07
Location: Skipton, North Yorkshire
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airflow meter, having this problem with mine for ages had a new egr valve and lambda sensor and fixed slightly, unplugged my airflow meter and it was like a brand new car no problems at all except eml on all the time coz its not plugged in, new one coming tmra though.
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eazy187
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Registered: 10th Aug 06
Location: Inverness Drives:Focus/Firestorm
User status: Offline
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rite il try that and maybe some injector cleaner
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dan_c4rsa
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Registered: 12th Dec 06
Location: North Yorks Drives: MK3 Seat Cupra
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ticking might be your thingy (cant remember the name!) opening and closing errrrrrrrrrrrrrrrrrrrrrrrrrr.......ICV methinks.
anyhoo, my corsa did this when i fitted a valve filter wrong, i always had to rev the arse off it to stop it stalling.
anyhoo simply reset your ecu and the engine will configure itself when u next start it. When i did it started fine afterwards!
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