rough idle

[joeburt130]

i have a 95 ranger with a 4.0 v6, and my problem is that i will have a slight rough idle, it idles normally, but every few seconds the rpm will dip down slightly. Wondering what could cause this, or if its just normal operation.

 

[Car-Dog]

Have you tried all the normal stuff like plugs, wires, Cleaning you MAF IAC and throttle body, and checking for vacuum leaks?

 

[joeburt130]

im gona try cleaning my IAC, i had a broken grommet at my brake booster, fixed that, still same problem, my MAF is clean and so is my throttle body

 

[MrShorty]

I might also try pulling codes (see stickies in EEC-IV forum) and checking fuel pressure.

 

[joeburt130]

i recently scaned for codes and it had nothing, id love to test the injectors but the dumb intake manifold is completely covering them