cold running problems

[imblue]

hi to everyone, don't know if you can help, i own an 1989 gli 440, had her 5 years never had a problem until this year when the cold whether started, when she's cold starts first time but runs as if on 3 cylinders, when you start to drive its as if the fourth cylinder wants to come in then goes so the car starts jumping, this will go on until you reach normal temp, BUT if you turn her off after a couple of minutes and leave it for say 10-15 minutes start her again she's fine as if nothing wrong ??, i was told it could be the idle regulater valve so tested this with 12v supply and it works fine, but when you test the wires to this unit your getting no voltage at all with key on, is this the norm and power goes to this unit at a later stage or is this my problem, if so how can i rectify it, is a relay gone if so which one

[the hoff]

could be spark plugs or leads when it happenned on mine i took a lead of to see wheather it made a diff anyway long story short badly corroded lead end (it was blue and crumbled) so try leads plugs

[imblue]

Originally Posted by the hoff

could be spark plugs or leads when it happenned on mine i took a lead of to see wheather it made a diff anyway long story short badly corroded lead end (it was blue and crumbled) so try leads plugs

hi hoff,sorry tried new plugs and leads over xmas no difference ?

[Velorum]

Have you checked the distributer cap and rota arm? If not look at the 4 contacts inside the cap and the contact on the rota arm - even when not very old they can be dirty or have a light coating of corrosion. This had happened a couple of times to me causing exactly the problem that you describe!

[jeff t]

Distributer cap and rotor arms can be a problem, have had a new one fail
and crack just after 1500 miles.
You could try looking in the fault code memory which might narrow it down.

[imblue]

cheers guys, i'll check the distributer cap out in the morning, also i have been told it could be the tempreture sensor thats telling the ECU its hot when its not ? makes good sence never thought of it, will keep you all posted

[imblue]

Originally Posted by imblue

cheers guys, i'll check the distributer cap out in the morning, also i have been told it could be the tempreture sensor thats telling the ECU its hot when its not ? makes good sence never thought of it, will keep you all posted

sorry been so long guys, i checked out the distriuber cap and rotor both completely shot, fitted new ones turn the key and purrs at 900 rpm went for a drive runs great, no more jumping or messing around, A BIG THANKS TO EVERYONE

[jeff t]

I was once told if you disconnected some sensors or relays while having
the ignition on that it would cause a fault to be stored in the memory
fault code DATA LINK , and if this was to happen to many times the faults
could act on each other.

Do not no if this is true or not , but could be a good idea to clear memory
fault codes regular.

[imblue]

Originally Posted by jeff t

I was once told if you disconnected some sensors or relays while having
the ignition on that it would cause a fault to be stored in the memory
fault code DATA LINK , and if this was to happen to many times the faults
could act on each other.

Do not no if this is true or not , but could be a good idea to clear memory
fault codes regular.

the 440 i've got is a 1989 GLI and i can't find where the fault code reader is, on other 440`s i've looked at its either on the top left or the right of the engine bay but i have nothing ? i've been told the cars to old to have one is this true ?

[jeff t]

yes you are correct , they came out in 1990.