Idleing Noise
Thread Starter
|
Junior User
Joined: Dec 2004
Posts: 78
Likes: 0
Idleing Noise
I have a 1996 Ford F-250 PSD.
My truck idles at about 600 RPM. Every once in a while, at random times, it drops to about 500 RPM and makes a grinding noise. The whole truck shakes and it feels like everything is about to fall off. It only makes the grinding noise for about 5 - 10 seconds tops then goes back to its normal RPM's. It never stalls but it sure sounds like its going to. Like I said, it does it whenever it wants. It doesnt matter if I put it in neutral coasting down a street or its just idleing in the driveway. Thanks in advance for all feedback
My truck idles at about 600 RPM. Every once in a while, at random times, it drops to about 500 RPM and makes a grinding noise. The whole truck shakes and it feels like everything is about to fall off. It only makes the grinding noise for about 5 - 10 seconds tops then goes back to its normal RPM's. It never stalls but it sure sounds like its going to. Like I said, it does it whenever it wants. It doesnt matter if I put it in neutral coasting down a street or its just idleing in the driveway. Thanks in advance for all feedback
Logistics Pro
Joined: Jul 2001
Posts: 4,137
Likes: 41
From: Marble Falls, Texas
I would look at the A/C compressor. Turn the A/C on and get out and watch it engauge and disengauge. That's the only thing I can think of that would be intermittant like that.
RubberDuck
RubberDuck
Thread Starter
|
Junior User
Joined: Dec 2004
Posts: 78
Likes: 0
Originally Posted by RubberDuck
I would look at the A/C compressor. Turn the A/C on and get out and watch it engauge and disengauge. That's the only thing I can think of that would be intermittant like that.
RubberDuck
RubberDuck
Logistics Pro
Joined: Jul 2001
Posts: 4,137
Likes: 41
From: Marble Falls, Texas
If you are standing at the grill, it is the upper right. The highest thing on the right with a pulley on it. With your A/C on, but not on Max A/C it should cycle on and off. Just stand out there and watch it. If it cycles on and off and you don't hear anything, I don't know where to go next.
RubberDuck
RubberDuck
Tuned
Joined: May 2004
Posts: 250
Likes: 1
From: Mississippi
Originally Posted by Greatsaves28
I have a 1996 Ford F-250 PSD.
My truck idles at about 600 RPM. Every once in a while, at random times, it drops to about 500 RPM and makes a grinding noise. The whole truck shakes and it feels like everything is about to fall off. It only makes the grinding noise for about 5 - 10 seconds tops then goes back to its normal RPM's. It never stalls but it sure sounds like its going to. Like I said, it does it whenever it wants. It doesnt matter if I put it in neutral coasting down a street or its just idleing in the driveway. Thanks in advance for all feedback
My truck idles at about 600 RPM. Every once in a while, at random times, it drops to about 500 RPM and makes a grinding noise. The whole truck shakes and it feels like everything is about to fall off. It only makes the grinding noise for about 5 - 10 seconds tops then goes back to its normal RPM's. It never stalls but it sure sounds like its going to. Like I said, it does it whenever it wants. It doesnt matter if I put it in neutral coasting down a street or its just idleing in the driveway. Thanks in advance for all feedback
Sounds like the noise could be the dual mass flywheel going bad if you still have it. They will shake and make an awful noise. Check the rotational slack in it, it should be no more than 5/8".
Thread Starter
|
Junior User
Joined: Dec 2004
Posts: 78
Likes: 0
Originally Posted by 01stroker
Sounds like the noise could be the dual mass flywheel going bad if you still have it. They will shake and make an awful noise. Check the rotational slack in it, it should be no more than 5/8".
Tuned
Joined: May 2004
Posts: 250
Likes: 1
From: Mississippi
Originally Posted by Greatsaves28
How do I go about checking that? And thanks for all the replys so far!
Maybe this will help.
Good Luck!
Trending Topics
Fleet Owner
Joined: Jun 2004
Posts: 25,090
Likes: 1,112
From: Rio Rico, AZ.
I vote for the AC pump going out too. It's the only thing that will cycle on and off plus make enough drag to slow down the engine.
Note: Even in the wintertime and you are using defrost the AC will turn on. It's done that way by design because it's great for extracting moisture out of the air. It clears a foggy windshield much faster that way.
Note: Even in the wintertime and you are using defrost the AC will turn on. It's done that way by design because it's great for extracting moisture out of the air. It clears a foggy windshield much faster that way.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Tuned
Joined: May 2004
Posts: 250
Likes: 1
From: Mississippi
Originally Posted by Kwikkordead
I vote for the AC pump going out too. It's the only thing that will cycle on and off plus make enough drag to slow down the engine.
Note: Even in the wintertime and you are using defrost the AC will turn on. It's done that way by design because it's great for extracting moisture out of the air. It clears a foggy windshield much faster that way.
Note: Even in the wintertime and you are using defrost the AC will turn on. It's done that way by design because it's great for extracting moisture out of the air. It clears a foggy windshield much faster that way.