jamesvalver
Member
Registered: 21st Feb 03
Location: Bury St Edmunds, Suffolk
User status: Offline
|
how can i connect up my diagnosis port on my dash to the engine? on the way home from the rolling road yesterday my ecu light came on a few times then sayed off, but today on the way home this evening, my engine light came on a few times then it just stayed on, but the car doesnt run any different to normal????
can anyone help?
|
lee mitchell
Member
Registered: 26th Jan 01
Location: kent...drive's: eveyones conversion cars hard lol
User status: Offline
|
what loom is ur car running?
|
jamesvalver
Member
Registered: 21st Feb 03
Location: Bury St Edmunds, Suffolk
User status: Offline
|
not sure as it was cossvaux that fitted the engine. it was a 1.0 12v
|
lee mitchell
Member
Registered: 26th Jan 01
Location: kent...drive's: eveyones conversion cars hard lol
User status: Offline
|
thats why it aint wired up then as the 1.0 is harder to wire up. i dont know anyone thats actually done it
|
willay
Moderator Organiser: South East, National Events Premium Member
Registered: 10th Nov 02
Location: Roydon, Essex
User status: Offline
|
|
jamesvalver
Member
Registered: 21st Feb 03
Location: Bury St Edmunds, Suffolk
User status: Offline
|
fook. is there any way the ecu can be read without it being in a car then?
|
lee mitchell
Member
Registered: 26th Jan 01
Location: kent...drive's: eveyones conversion cars hard lol
User status: Offline
|
brown blue is the light so will either be the brown/white or brown/yellow
|
jamesvalver
Member
Registered: 21st Feb 03
Location: Bury St Edmunds, Suffolk
User status: Offline
|
hmm... will attempt that and if it works ill get a vid of what the lights doing
|
jamesvalver
Member
Registered: 21st Feb 03
Location: Bury St Edmunds, Suffolk
User status: Offline
|
i found two plugs joined to gether with some of the wires cut so i earthed the brown/yellow wire and it flashed something up on the dash.
this is the results (i have no idea what any of it means)
http://www.youtube.com/watch?v=91q3HHF8fqc
|
Dave A
USER UNDER INVESTIGATION - DO NOT TRADE
Registered: 10th Dec 03
Location: County Durham
User status: Offline
|
65 Carbon Monoxide (CO) potentiometer Low voltage
31 Engine RPM signal (crankshaft sensor) No signal
31 is probably wrong because it wouldnt start if there wasnt a crank signal.
|
Dave A
USER UNDER INVESTIGATION - DO NOT TRADE
Registered: 10th Dec 03
Location: County Durham
User status: Offline
|
65 is the idle mixture screw on the side of the airflow meter
|
jamesvalver
Member
Registered: 21st Feb 03
Location: Bury St Edmunds, Suffolk
User status: Offline
|
quote: Originally posted by Dave A
65 Carbon Monoxide (CO) potentiometer Low voltage
31 Engine RPM signal (crankshaft sensor) No signal
65 - i have no idea what that means (quite bad seeing as im a mechanic at mazda)
31 - i wonder if it missed a beat on start up?
|
Dave A
USER UNDER INVESTIGATION - DO NOT TRADE
Registered: 10th Dec 03
Location: County Durham
User status: Offline
|
do you have a lambda sensor in the exhaust?
|
jamesvalver
Member
Registered: 21st Feb 03
Location: Bury St Edmunds, Suffolk
User status: Offline
|
yeh
|
Dave A
USER UNDER INVESTIGATION - DO NOT TRADE
Registered: 10th Dec 03
Location: County Durham
User status: Offline
|
its possible that you dont have a screw on the afm then. sometimes turning it 1/4 a turn can stop the light coming on. has the airfilter been messed with lately?
|
jamesvalver
Member
Registered: 21st Feb 03
Location: Bury St Edmunds, Suffolk
User status: Offline
|
not as far as i know. might of been dislodged on the rolling road. will try to get hold of another AFM n try it
|
Dave A
USER UNDER INVESTIGATION - DO NOT TRADE
Registered: 10th Dec 03
Location: County Durham
User status: Offline
|
theres 2 types of afm. one has 4 pins, the other has 5. if you have a lambda you need the one with 4.
|
jamesvalver
Member
Registered: 21st Feb 03
Location: Bury St Edmunds, Suffolk
User status: Offline
|
cheers, my mates got a calibra 16v so ill try one of that!
|
lee mitchell
Member
Registered: 26th Jan 01
Location: kent...drive's: eveyones conversion cars hard lol
User status: Offline
|
31 will be up if u didnt have the engine running when u done the test
|
jamesvalver
Member
Registered: 21st Feb 03
Location: Bury St Edmunds, Suffolk
User status: Offline
|
that'll be why then lee. cheers!![](/board/images/smile/thumbs.gif) ![](/board/images/smile/thumbs.gif) ![](/board/images/smile/thumbs.gif)
|
Stoneyginger
Premium Member
Registered: 25th Jan 01
Location: Stonehaven, Aberdeenshire
User status: Offline
|
was the car running when you did that test as you will get 31 when the car is not on
|
Stoneyginger
Premium Member
Registered: 25th Jan 01
Location: Stonehaven, Aberdeenshire
User status: Offline
|
just saw previous post
|
jamesvalver
Member
Registered: 21st Feb 03
Location: Bury St Edmunds, Suffolk
User status: Offline
|
cheers guys. i found a brass coloured flat head screw next to the wiring plug on the AFM so i turned it 1/4 - 1/2 a turn to the right and took it for a short drive. the ecu light stayed off this time where as it used to come on by just starting the car.
will keep an eye on it over the next couple of days but its looking good!!
![](/board/images/smile/thumbs.gif)
|
Dave A
USER UNDER INVESTIGATION - DO NOT TRADE
Registered: 10th Dec 03
Location: County Durham
User status: Offline
|
|
jamesvalver
Member
Registered: 21st Feb 03
Location: Bury St Edmunds, Suffolk
User status: Offline
|
its come on again twice tonight when accelerating but gone off again and hasnt come back on yet.
|