Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!
Hi I have a 1998 GMC 5.7 vortec. When Its started from cold to around 185° the fuel trims are normal on bank 1 an a little high on bank 2 LT 10.4 ST 1.7 but when I start driving and it gets to 194° and check them again bank 1 is normal but bank 2 is LT FTRM+25 and ST FTRM+26.6 at idle an only goes down a couple number when rev up to 2500 rpm .any advice would be really appreciated. Please and Thank you
Check the upper intake manifold bolts, any loose? If not, spray some carbclean at bank 2 intake gasket, watch trims or listen for rpm change, could be heat expansion at intake causing a air leak
