Pipelayer
Active Member
- Joined
- August 3, 2006
- Messages
- 66
- Reaction score
- 1
- City, State
- Gary, Indiana
- Year, Model & Trim Level
- 2000 Sport Coupe 4WD, SUV
Thumping and vibrating
I have a Ford Explorer 2000 Sport Coupe, 4.0-OHV, V6 - 4WD. I've notice that everything works fine on the expressway. But in stop and go driving after a while it starts thumping & vibrating, the thumping happens as I'm pulling off from a stop sign or a traffic light, sometime with vibration. It also vibrates when slowing down or braking. Runs smooth as a top while sitting at a traffic light. At times when braking I could feel the whole SUV shaking (sounds serious). Neither the thumping of vibrating are matallic, meaning, like metal against metal. As a matter of a fact, you can't even hear it, but you can feel the hell out of it. These conditions are not always consistant.
Sometimes I pull off or slow down and everything works fine. But more often than not, it's doing what I describe above. What is consistant is that it always happens in stop and go traffic. Once I go over forty (or sit at a complete stand still) it's smooth operation.
Does anyone have any idea what this could be?
Thanks in advance.
PS-
I just changed the IAC (Idle Air Control) valve yesterday. But the described problem existed even before I did that and this did nothing, I could see, to remedy it. Changing this IAC valve did however stop my Explorer from loudly humming and whinning like a moose, periodically.
I have a Ford Explorer 2000 Sport Coupe, 4.0-OHV, V6 - 4WD. I've notice that everything works fine on the expressway. But in stop and go driving after a while it starts thumping & vibrating, the thumping happens as I'm pulling off from a stop sign or a traffic light, sometime with vibration. It also vibrates when slowing down or braking. Runs smooth as a top while sitting at a traffic light. At times when braking I could feel the whole SUV shaking (sounds serious). Neither the thumping of vibrating are matallic, meaning, like metal against metal. As a matter of a fact, you can't even hear it, but you can feel the hell out of it. These conditions are not always consistant.
Sometimes I pull off or slow down and everything works fine. But more often than not, it's doing what I describe above. What is consistant is that it always happens in stop and go traffic. Once I go over forty (or sit at a complete stand still) it's smooth operation.
Does anyone have any idea what this could be?
Thanks in advance.
PS-
I just changed the IAC (Idle Air Control) valve yesterday. But the described problem existed even before I did that and this did nothing, I could see, to remedy it. Changing this IAC valve did however stop my Explorer from loudly humming and whinning like a moose, periodically.
