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Author Engine Management Light C20XE in corsa(idling & misfiring)
GED2.0CORSA
Member

Registered: 28th Apr 04
Location: Mintlaw, Aberdeenshire
User status: Offline
28th Mar 05 at 08:02   View User's Profile U2U Member Reply With Quote

right well,

fitted my coscast head this weekend everything went to plan and it fitted all piped up no problems and then fired her up no worries ran like a bag of bolts at first then it idled perfectly at say 700-900rpm.


my old man took it for a test drive driving it seemed alot smoother no juddering (as if misfire ). all was fine then management light started coming up ???

so the car happily drove alog but management light was going off and on say every ten mins it would be on 3 times for 10 seconds each time, but there is no difference to the running of this engine ???

its obviously not something thats detrimental to the engine as the engine would shut its self down ??

Please Help

[Edited on 28-03-2005 by GED2.0CORSA]

[Edited on 29-03-2005 by GED2.0CORSA]

[Edited on 30-03-2005 by GED2.0CORSA]
GED2.0CORSA
Member

Registered: 28th Apr 04
Location: Mintlaw, Aberdeenshire
User status: Offline
28th Mar 05 at 08:04   View User's Profile U2U Member Reply With Quote

ive tried paper clip test and got nothing !!!

management light just stayed on !!!
and-m
Member

Registered: 5th May 02
Location: Liverpool. Drives. Skud vRS.
User status: Offline
28th Mar 05 at 13:33   View User's Profile U2U Member Reply With Quote

i dont think you did the test properly, was it done with the ingition turned on but the engine off?
James R
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Registered: 4th Feb 03
Location: 205GTi16/306GTi16
User status: Offline
28th Mar 05 at 15:05   View User's Profile U2U Member Reply With Quote

Have you checked that the ecu light isn't chaffing causing it to come one when it shouldn't?
Especially as it's not storing the faults (if any)
GED2.0CORSA
Member

Registered: 28th Apr 04
Location: Mintlaw, Aberdeenshire
User status: Offline
29th Mar 05 at 07:06   View User's Profile U2U Member Reply With Quote

well theres definatyl some thing wrong somewhere , now it wont idle and cuts out after i dip the clutch approaching a roundabout/junction, decided to put it into vauxhall ive just about lost all patients with it alltogether !

and-m, ignition was on when i tried the test and i bridged pin 5-6 on a 16 pin plug.

[Edited on 29-03-2005 by GED2.0CORSA]
GED2.0CORSA
Member

Registered: 28th Apr 04
Location: Mintlaw, Aberdeenshire
User status: Offline
30th Mar 05 at 07:33   View User's Profile U2U Member Reply With Quote

and now it seems to have developed a misfire ???

management light stays on, ive tried paper clip but i get nothing !!

help please

[Edited on 30-03-2005 by GED2.0CORSA]
TOMAS
Member

Registered: 7th Aug 02
Location: Nottinghamshire
User status: Offline
30th Mar 05 at 08:59   View User's Profile U2U Member Reply With Quote

I too have the 20XE fitted in the corsa and also have the 16pin plug. Ive tried paperclip test as per that website (topbuzz?) but no joy, im sure they are wiered diffo. Only way is to break down the loom and tap the ECU light wire to earth to test properly but havent done that. It could be the Air mass meter/ air temp meter (if your on Moto 2.8 ignition), how tight are the wires for these sensors?
GED2.0CORSA
Member

Registered: 28th Apr 04
Location: Mintlaw, Aberdeenshire
User status: Offline
30th Mar 05 at 09:09   View User's Profile U2U Member Reply With Quote

air temp meter ??? where is this ???
TOMAS
Member

Registered: 7th Aug 02
Location: Nottinghamshire
User status: Offline
30th Mar 05 at 09:14   View User's Profile U2U Member Reply With Quote

Is yours running a dizzy, if so I dont think you have one but its all in the trunking from std airbox to the air inlet (SFi Box on std 20XE's).
GED2.0CORSA
Member

Registered: 28th Apr 04
Location: Mintlaw, Aberdeenshire
User status: Offline
30th Mar 05 at 09:34   View User's Profile U2U Member Reply With Quote

yes its a dizzy XE , the contacts inside the dizzy are all burnt, would this mean iratic firing ?
carnoisseurcraig
Member

Registered: 4th Jun 03
Location: Inverness
User status: Offline
30th Mar 05 at 10:03   View User's Profile U2U Member Reply With Quote

sounds like she is leaking air somewhere. check all air flow pipes to the throttle housing... check that you have no split hoses... are you running a powercap or ecotec pipe.... check everything there... is ur inlet manifold tighten.. all bolts. did u scrape all remains of gasket away. were the facings clean.. with the managment light on its good news as it will be summin simple.... start from the beginning, check spark, leads the right way, check the hall sensor, do a voltage test on that. also the coil.

a code from the ecu would be super handy lol. if it was running fine before you changed the head its summin you have done wrong or over looked.... just re trace ur steps so to speak.
GED2.0CORSA
Member

Registered: 28th Apr 04
Location: Mintlaw, Aberdeenshire
User status: Offline
30th Mar 05 at 10:34   View User's Profile U2U Member Reply With Quote

yea going through this prcoess at the mo craig, everything should tight like it was all torqued when fitted.

changing the idle valve back to the old one after work, i know theres a little crack in a hose from the power cap to the idle valve but wheter theres a leak there or no im un known !!
carnoisseurcraig
Member

Registered: 4th Jun 03
Location: Inverness
User status: Offline
30th Mar 05 at 11:46   View User's Profile U2U Member Reply With Quote

if that was leaking air then the revs would be up and down.
GED2.0CORSA
Member

Registered: 28th Apr 04
Location: Mintlaw, Aberdeenshire
User status: Offline
30th Mar 05 at 11:49   View User's Profile U2U Member Reply With Quote

it wont idle at all now and it developed a misfire, does idle valve cause this
Tom N
Member

Registered: 4th Jun 03
Location: Bradford/Sheff (Uni) Drives: Golf GTI
User status: Offline
30th Mar 05 at 11:51   View User's Profile U2U Member Reply With Quote

there is a pipe which goes down the back right of the engine near the coolant tank from the throttle body i think. see if that is loose anywhere, mine came loose and it just cut out if you didnt keep revs up.
GED2.0CORSA
Member

Registered: 28th Apr 04
Location: Mintlaw, Aberdeenshire
User status: Offline
30th Mar 05 at 12:01   View User's Profile U2U Member Reply With Quote

yes well thats the pipe that has a crack in it , not sure if its only the surface of the pipe or if its right through

 
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