MPNX2
Member
- Joined
- July 11, 2009
- Messages
- 12
- Reaction score
- 0
- Year, Model & Trim Level
- 1996 Explorer
Ok I seem to have a vacuum leak on our 96 Explorer. It is the V6 4.0 liter engine. At times it will idle really rough does not seem to matter if it is cold of warm. I can make it idle this way by pumping the brakes over and over which tells me it is a vacuum leak. Now I have tested the IAC on the top of the intake. I unplugged it and the idle became much worse. So this would tell me it is working. If I spray starting fluid around different areas if I spray it by the AC compressor the idle will raise. There is an audible hissing sound in this area. I cleaned the IAC and no change. I thought I had a leak at the IAC so I siliconed around it but no change. Is there a gasket that goes on the IAC? There is a line by the AC compressor which plugs in right behind where the intake butterfly is. This hose runs down under the battery where alot of hoses meet I am unsure what that is. But this is the area where the idle will raise if starting fliud is sprayed. So it that a vacuum line? Vacuum leaks sure are frustrating can anyone help out?