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 everyone from chicago, new at this forum for paul danner, i have a 2005 nissan maxima with negative vacuum pressure in the intake and i don t remember if that exactly means a restricted catalytic convertor. also vehicle has no power while driving and no accel, feels like a clogged cat, found stored code with no service engine light on P0726 & C1130, both are telling me to check cam sensors and scoping them, which was done all ready
Could you clarify for me what you mean by negative vacuum pressure? Are you referring to low manifold vacuum at idle?
You may be on the right track with a clogged cat. How does the vacuum gauge behave during a WOT snap in park?
The codes you listed and the symptoms you describe remind me of a TSB I saw once regarding erratic ABS wheel speed sensors, specifically the rears. The ABS freaks out and commands a fuel cut. Do the traction control lights come on when the engine falls on its face?
