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!
Hello one and all, i have a little problem with my Dodge, maybe someone has an idea of what is going on. i have no DTCs, all systems are a go. i have checked everywhere fior vacuum leaks. the problem is when i step on the gas my a/c goes from blowing straight out the front vents to blowing out the top window defroster. any ideas?
There should be a check valve in the vacuum line supplying the HVAC controls. If it's stuck, or missing, that can cause your issue. If the check valve is OK you've got a leak somewhere on the HVAC side of it.
