Running Rough until warm

[pikey]

Hi All
I have a 2003 VY SS..I have been having a few problems with car running rough which originally i thought was when under load..I dont use the car that much but now with further testing it appears to only run rough when its getting warmed up..Once its warm after a few k's the problem disappears..I have replace plugs/leads and its been on a tester with no fault codes showing...Is there a sensor that controls fuel/spark on the warm up process

Thanks


Alan

 

[MiKExAUS]

when was your last oil change and do you know what grade of oil was used?

 

[strgas]

check the ECT sensor output may still be in range therefore not logging a code and affecting mixture control

 

[pikey]

when was your last oil change and do you know what grade of oil was used?

Oil was changed around 6 months ago with magnatec 10/40. I have probably only done around 2,000 k's since then

Alan

 

[pikey]

check the ECT sensor output may still be in range therefore not logging a code and affecting mixture control

Thanks for your reply...Can you point me in the right direction to test/check this?....Can the sensor be replaced easily?

Thanks

Alan

 

[Dirbatua]

Has the car been tuned? because it could just be a **** cold start tune.

 

[pikey]

Has the car been tuned? because it could just be a **** cold start tune.

No...The car is standard apart from extractors....Has been running fine for the last 8 months...

Alan

 

[Munz]

Clean throttle, maf and IAC maybe also o2's need replacing