slight missfire on ecotech engine?? - Corsa Sport - for Vauxhall and Opel Corsa B, Corsa C and Corsa D

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SRI-LEE

Member

Registered: 16th Feb 08
Location: kendal
User status: Offline

17th May 09 at 15:26

hi all iv just fitted a 1.4 16 valve sport engine x14xe in to my sport its got power steering and air con due to the old one dropping a valve got it started first time but it has a slight missfire more noticeable at idle then when you rev it its there but doesnt really str#uggle to rev but you can tell its there if you knwo what i mean? anyway the eml light is on, the car doesnt have the alt belt on could this put the light on? or hav i missed a connector or earth possibly? iv put plugs and coil pack out of my other corsa that runs fine and it didnt really change it so any help would be great! thanks lee

SRI-LEE

Member

Registered: 16th Feb 08
Location: kendal
User status: Offline

17th May 09 at 21:54

anyone? been told could possibly be a faulty map sensor? going to do the paper clip next i think

SRI-LEE

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Registered: 16th Feb 08
Location: kendal
User status: Offline

18th May 09 at 07:09

no ideas please?

SRI-LEE

Member

Registered: 16th Feb 08
Location: kendal
User status: Offline

18th May 09 at 17:01

found out i cant do the paper clip test on my year of car the pin for it isnt there

any ideas really need it running properly! someone must know pleaseee

gez bay

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Registered: 14th Feb 08
Location: South Wales drives: Vxr
User status: Offline

18th May 09 at 17:07

have you tried the spark plugs or leads?

SRI-LEE

Member

Registered: 16th Feb 08
Location: kendal
User status: Offline

18th May 09 at 17:10

yeah tryed both of them no luck

SRI-LEE

Member

Registered: 16th Feb 08
Location: kendal
User status: Offline

28th May 09 at 17:56

still no luck!

put a map sensor idle control valve and temp sensor in and still no better seems to be ok when held at higher revs but is very noticeable at low revs eml is on any more ideas? thanks lee

SRI-LEE

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Registered: 16th Feb 08
Location: kendal
User status: Offline

28th May 09 at 21:54

anyone got any help ?

DaveyLC

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Registered: 8th Oct 08
Location: Berkshire
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28th May 09 at 22:25

inlet temperature sensors are a common fault.

SRI-LEE

Member

Registered: 16th Feb 08
Location: kendal
User status: Offline

29th May 09 at 07:02

which is that? as ive changed the temp sensor near the cambelt thanks lee

DaveyLC

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Registered: 8th Oct 08
Location: Berkshire
User status: Offline

29th May 09 at 14:26

Thats the one on the pipe that comes out of the airbox.

dan-sport

Member

Registered: 9th Oct 07
Location: Bushbury, West Midlands
User status: Offline

29th May 09 at 14:29

i had a very slight missfire and suddenly turned into a massive 1 yesterday so i changed the coil pack and leads and its all good again so if you have a spare coil pack try that

SRI-LEE

Member

Registered: 16th Feb 08
Location: kendal
User status: Offline

29th May 09 at 16:55

iv tryed that dan cheers iv done a quick paper cliptest and out of all the numbers the intake pressure sensor was one of the matches does it just pull out of the airbox piping? thanks lee

SRI-LEE

Member

Registered: 16th Feb 08
Location: kendal
User status: Offline

29th May 09 at 17:18

im thinking now that its the intake manifold pressure sensor or the intake air temperature sensor as these are the faults im getting my codes are the same or one number out but cant find a number the same as mine so i must have written them down wrong theres:

0105 Intake manifold pressure sensor

1530 Air flow relay

1411 Secondary air pump

any ideas ?

would these faults cause misfiring and poor running as dfescribed?

SRI-LEE

Member

Registered: 16th Feb 08
Location: kendal
User status: Offline

29th May 09 at 19:06

anyone please ?

SRI-LEE

Member

Registered: 16th Feb 08
Location: kendal
User status: Offline

30th May 09 at 17:03

today iv spent 5 pissing hours on this engine!

iv changed the idle control valve the air intake sensor coolant temp sensor cam shaft sensor crank sensor took the inlet manifold off and checked throttle body e.t.c is properly seald and now it seems to run fine but with the eml light on i think this is maybe because of a slight air leak? as it every now anmd then revs up a little on its own but apart from that seems to run spot on but when the alternator belt is on it struggles to start and runs like crap iv never seen anything like this before has anyone else experienced it? its only the aircon and alternator that are electricaly supllied so what could be wrong? i did change the alternator before fitting the engine maybe the wires in wrong place? any help be much appreciated as pv isnt far way at all!! thanks for any help lee

fillmecca

Member

Registered: 16th Jun 07
User status: Offline

30th May 09 at 20:15

when i did my head gasskit i 4got to do up the inlet bolts tite and ther was a slight air leak and that made it run lyk a bag of shit and rev up and dwn on its own and the eml light was on give me a ring 1day this nxt week and il come help ya sort it out lee!!

SRI-LEE

Member

Registered: 16th Feb 08
Location: kendal
User status: Offline

30th May 09 at 23:45

im going in to have anouther bash 2moz like its at work and there gay and dont let non workers in so gotta do it all on my own which is gay! cheers anyway though mate

hopefully il get it sorted tomorrow!

SRI-LEE

Member

Registered: 16th Feb 08
Location: kendal
User status: Offline

31st May 09 at 18:03

could the egr valve cause this? noticed the missfire doesnt go when the belts off but its slightly better. thanks lee

Richardhhha

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Registered: 29th Sep 07
Location: Croydon, Greater London
User status: Offline

31st May 09 at 18:29

the egr will come up as faulty when you run a paper clip test they are common to go on the 14 and 16xe engines, you will most probably find that its a air leak, or in fact the MAP sensor Black box on the bulk head with a green plug and a pipe comming out of it. also the pipes tend to split on these so check them for perrishing, and good tip spray some brake cleaner or wd40 round the joints of the top half of the inlet manifold as this will show up any leaks you may have

fillmecca

Member

Registered: 16th Jun 07
User status: Offline

31st May 09 at 19:22

quote:
Originally posted by SRI-LEE
im going in to have anouther bash 2moz like its at work and there gay and dont let non workers in so gotta do it all on my own which is gay! cheers anyway though mate hopefully il get it sorted tomorrow!

thats gay init oh well lee will have to do it him self

i think it will b a air leak wer did u get the new engine from??

SRI-LEE

Member

Registered: 16th Feb 08
Location: kendal
User status: Offline

31st May 09 at 22:34

yeah ano its shit lol yeah hopefully soon see a guy from egremont off anouther forum

SRI-LEE

Member

Registered: 16th Feb 08
Location: kendal
User status: Offline

31st May 09 at 22:35

quote:
Originally posted by Richardhhha
the egr will come up as faulty when you run a paper clip test they are common to go on the 14 and 16xe engines, you will most probably find that its a air leak, or in fact the MAP sensor Black box on the bulk head with a green plug and a pipe comming out of it. also the pipes tend to split on these so check them for perrishing, and good tip spray some brake cleaner or wd40 round the joints of the top half of the inlet manifold as this will show up any leaks you may have

cheers mate nice one iv got a spare map sensor so will bash that on tomorrow and look for leaks