mysticclam
New Member
- Joined
- Feb 8, 2010
- Messages
- 9
- Reaction score
- 0
- Points
- 1
- Vehicle Year
- 1997
- Make / Model
- Ford Ranger
- Engine Type
- 4.0 V6
- Transmission
- Manual
- 2WD / 4WD
- 4WD
1997 ranger 4.0. Driving down the road suddenly out of the blue, high pitched whine. It is pretty loud. Engine speed doesnt change it really but load does. If you floor it the noise goes away and fades back in pretty quickly. exactly the way the needle on a vacuum gauge would drop when the throttle is opened suddenly and then rises back up. It seems like its got to be vacuum related but I dont know where else to check. I dont think its the lines, they all seem to come off the back of the intake and ive unplugged that and capped it and the noise still happens. Im wondering if there is an intake leak somewhere but I dont know how to check. Visually it looks fine. I should note, the truck runs fine, no idle or drive-ability issue, just the awful noise.
Im going to pull the serpentine belt tomorrow just to rule out an accessory but I dont think the noise would go away if it was from an accessory.
Wondering if anyone has had a similar issue. Most of the posts I found have people getting a worse sound on acceleration, i get it goes away and comes right back the same on acceleration.
Im going to pull the serpentine belt tomorrow just to rule out an accessory but I dont think the noise would go away if it was from an accessory.
Wondering if anyone has had a similar issue. Most of the posts I found have people getting a worse sound on acceleration, i get it goes away and comes right back the same on acceleration.