What is your question?
·
·
What is your question?
having problems with my 2007 cadillac srx AWD v6 3.5 with 160,000 miles on it. starts and idles with no issues. it has had a new transmission at 135,000 miles. there are no codes being thrown. when driving it has an intermitten skipping. definately feels like there is a cylinder misfiring or not firing. rpm's at 55-60 mph seems low like under 2000. without any SES/check engine lights how do i find out which cylinder(s) is having the issue problem? and how do i tell if it is the coil pack or spark plug?

i can test compression on each cylinder and change all the plugs because its probably in need of it. from there i imagine if i still have the problem it is a bad coil/pack but why wouldnt the computer throw a code for a misfire?
Its not severe or frequent enough to set a code...YET! Either have it scanned for misfire data or ride it until a code is stored but that 'may' damage the catalytic converter!
thank you for the advice. hopefully the cat converter hasnt been affected!
Ok