BeeTeeBee
Member
- Joined
- Feb 3, 2013
- Messages
- 7
- Reaction score
- 0
- Vehicle Year
- 1999
- Make / Model
- Ford
- Transmission
- Automatic
Hi all,
I have a 1999 Ford Ranger 4.0L V6. My truck’s RPM gauge will fluctuate and if I don’t give it some gas it will stall. While this happens the truck feels like its chugging. It idles just fine (1000 RPMS). I took it to an auto shop and they couldn’t get the problem to repeat. They said the diag showed that in the past the IAC valve had triggered and the ECT sensor had also triggered but were both functioning fine. They recommended a tune up. I replaced plugs (they were really bad), wires, gas filter, PCV Valve, and IAC valve.
After all this, the trucks RPM’s would still fluctuate and still chugs, although not as bad. I have an Engine Coolant Temp sensor to install yet but with my plugs being so bad I was thinking maybe I need to buy a new ignition coil? The diag just registered a P0320 (Ignition/Distributor Engine Speed Input). Any help? Sorry if this was a little long. Any help would be much appreciated.![Icon Thumby :icon_thumby: :icon_thumby:](http://www.therangerstation.com/forums/images/smilies/icon_thumby.gif)
I have a 1999 Ford Ranger 4.0L V6. My truck’s RPM gauge will fluctuate and if I don’t give it some gas it will stall. While this happens the truck feels like its chugging. It idles just fine (1000 RPMS). I took it to an auto shop and they couldn’t get the problem to repeat. They said the diag showed that in the past the IAC valve had triggered and the ECT sensor had also triggered but were both functioning fine. They recommended a tune up. I replaced plugs (they were really bad), wires, gas filter, PCV Valve, and IAC valve.
After all this, the trucks RPM’s would still fluctuate and still chugs, although not as bad. I have an Engine Coolant Temp sensor to install yet but with my plugs being so bad I was thinking maybe I need to buy a new ignition coil? The diag just registered a P0320 (Ignition/Distributor Engine Speed Input). Any help? Sorry if this was a little long. Any help would be much appreciated.
![Icon Thumby :icon_thumby: :icon_thumby:](http://www.therangerstation.com/forums/images/smilies/icon_thumby.gif)