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  #1  
Old 03-13-2011, 07:41 PM
Kindy Kindy is offline
"Spike" 1999 Blue Ranger
 
Join Date: Feb 2011
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Default Grinding sound when punching the gas?

Ok, this is going to be one of those "but it never happens for the mechanic" questions. In the last 5 days I have had this happen about 5 times now and I will try to explain it the best I can.

It first happened when I was turning to the left across two lanes into traffic and had to accelerate to get ahead of oncoming traffic. As I turned nothing happened, but as I was straightening out the turn and hit the gas I heard a loud, but very brief "grinding" noise and a little "jolt", almost as if something was trying to "kick in" or "un-stick" itself. At first I thought it had something to do with the fact that I was both turning AND accelerating, but then...the next two times was when I was accelerating from a dead stop after the light turned green. I was not turning, just going straight. The fourth time was when I was turning and accelerating and straightening out after the turn again and the last time, which was about 2 hours ago while running to the store, I heard and felt it again while accelerating out of a parking lot to get ahead of another car. Please bear in mind that it's not just when I normally accelerate...only when I have to punch it to get going faster.

So, long story short, it appears to only happen when I have to "punch" the gas and it only happens for a brief moment and then the truck runs for miles and miles just fine.

Any thoughts? U-joint perhaps? 4 wheel drive trying to engage without asking it to? Brakes sticking? ????
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1999 Dark Blue Ranger XLT Stepside 4x4 -V6 Flex fuel 3.0 liter Auto - Alloy wheels - P245/75R/16 BFG Land Terrain tires - L/S 4.10 - Tinted Windows -Power Mirrors and Windows - Cruise Control - Stock Head Lights - Black Altezza Tail Lights - Black Oval Nerf Bars - AVS Bugflector II - AVS In-Channel Vent Visors - Soft Snap-on Tonneau Cover
I might look small and yes, I'm a chick, but I shoot, throw, hit, and hunt. I highly suggest you don't mess with my truck!
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  #2  
Old 03-13-2011, 08:36 PM
Kindy Kindy is offline
"Spike" 1999 Blue Ranger
 
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Posts: 405
Default Re: Grinding sound when punching the gas?

Bump
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1999 Dark Blue Ranger XLT Stepside 4x4 -V6 Flex fuel 3.0 liter Auto - Alloy wheels - P245/75R/16 BFG Land Terrain tires - L/S 4.10 - Tinted Windows -Power Mirrors and Windows - Cruise Control - Stock Head Lights - Black Altezza Tail Lights - Black Oval Nerf Bars - AVS Bugflector II - AVS In-Channel Vent Visors - Soft Snap-on Tonneau Cover
I might look small and yes, I'm a chick, but I shoot, throw, hit, and hunt. I highly suggest you don't mess with my truck!
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  #3  
Old 03-13-2011, 08:55 PM
joshyddog joshyddog is offline
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Default Re: Grinding sound when punching the gas?

Sounds bad...
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  #4  
Old 03-13-2011, 08:59 PM
rangerwheelinmike rangerwheelinmike is offline
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Default Re: Grinding sound when punching the gas?

you got l/s or a locker in the rear end?
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  #5  
Old 03-13-2011, 09:10 PM
Kindy Kindy is offline
"Spike" 1999 Blue Ranger
 
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Posts: 405
Default Re: Grinding sound when punching the gas?

Quote:
Originally Posted by rangerwheelinmike View Post
you got l/s or a locker in the rear end?
Dumb first time truck owner here...can you explain what these are?
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1999 Dark Blue Ranger XLT Stepside 4x4 -V6 Flex fuel 3.0 liter Auto - Alloy wheels - P245/75R/16 BFG Land Terrain tires - L/S 4.10 - Tinted Windows -Power Mirrors and Windows - Cruise Control - Stock Head Lights - Black Altezza Tail Lights - Black Oval Nerf Bars - AVS Bugflector II - AVS In-Channel Vent Visors - Soft Snap-on Tonneau Cover
I might look small and yes, I'm a chick, but I shoot, throw, hit, and hunt. I highly suggest you don't mess with my truck!
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  #6  
Old 03-13-2011, 10:13 PM
lovemud lovemud is offline
off road all the time
 
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Default Re: Grinding sound when punching the gas?

sounds to me like the trans but at the same maybe a hub. is there any shaking at the time?
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  #7  
Old 03-13-2011, 10:22 PM
rangerwheelinmike rangerwheelinmike is offline
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Default Re: Grinding sound when punching the gas?

could be a rear u joint to though
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2000 ford ranger 5.0/4r70w/np208 gt40p heads, mustang T/B and injectors, true dual flowmaster 10s no cats, 4r70w auto with trans go aod hd 2 shift kit and full manual valve body. 4x4,locked 9in rear,locked coil dana 44 front with 4.10s , 8in lift springs, 3in bl. on 34/10.5s,or 38-15-15s 8000k hids, 7in flip out dvd player, 2 kicker 12s and 2400watt amp

www.f150nation.com
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  #8  
Old 03-13-2011, 10:25 PM
Robertkx250f Robertkx250f is offline
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Join Date: Mar 2011
Posts: 53
Default Re: Grinding sound when punching the gas?

Is it a really bad grinding sound or a little pinging noise because mine does that and the manual says it is normal
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  #9  
Old 03-13-2011, 10:35 PM
Kindy Kindy is offline
"Spike" 1999 Blue Ranger
 
Join Date: Feb 2011
Posts: 405
Default Re: Grinding sound when punching the gas?

Quote:
Originally Posted by lovemud View Post
sounds to me like the trans but at the same maybe a hub. is there any shaking at the time?
No, there's no shaking. It just makes a grinding noise and sort of "catches" for a brief second and then "releases" immediately. If that makes any sense. It didn't feel like a transmission problem (as in slipping gears) though. I've had a car with transmission problems before and it didn't feel anything like that, but I wasn't paying attention as to whether it was doing it right about the time it would be shifting or not so I can't be 100% sure either.

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Quote:
Originally Posted by rangerwheelinmike View Post
could be a rear u joint to though
I was thinking U joint also, but not sure how to check for that.

----------

Quote:
Originally Posted by Robertkx250f View Post
Is it a really bad grinding sound or a little pinging noise because mine does that and the manual says it is normal
It's a really bad noise. Kind of feel it under me sort of loud grind (kind of like when you can feel the beat of the bass from your stereo sort of noise). Hell, I don't even know if "grinding" is the right way to describe it, but it's the best I can come up with.
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1999 Dark Blue Ranger XLT Stepside 4x4 -V6 Flex fuel 3.0 liter Auto - Alloy wheels - P245/75R/16 BFG Land Terrain tires - L/S 4.10 - Tinted Windows -Power Mirrors and Windows - Cruise Control - Stock Head Lights - Black Altezza Tail Lights - Black Oval Nerf Bars - AVS Bugflector II - AVS In-Channel Vent Visors - Soft Snap-on Tonneau Cover
I might look small and yes, I'm a chick, but I shoot, throw, hit, and hunt. I highly suggest you don't mess with my truck!
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  #10  
Old 03-13-2011, 10:52 PM
rangerwheelinmike rangerwheelinmike is offline
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Posts: 307
Default Re: Grinding sound when punching the gas?

do u have l/s or rear locker?

----------

o sorry i dident see your last post loll
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2000 ford ranger 5.0/4r70w/np208 gt40p heads, mustang T/B and injectors, true dual flowmaster 10s no cats, 4r70w auto with trans go aod hd 2 shift kit and full manual valve body. 4x4,locked 9in rear,locked coil dana 44 front with 4.10s , 8in lift springs, 3in bl. on 34/10.5s,or 38-15-15s 8000k hids, 7in flip out dvd player, 2 kicker 12s and 2400watt amp

www.f150nation.com
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  #11  
Old 03-14-2011, 08:46 AM
Kindy Kindy is offline
"Spike" 1999 Blue Ranger
 
Join Date: Feb 2011
Posts: 405
Default Re: Grinding sound when punching the gas?

BUMP please

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Ok, I researched it and now know what l/s and rear locker is, but how do I check to see which I have?

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From everything I'm reading in other posts now it sounds very much like it may be that I have the l/s locked (rear locker) and when running on pavement like I am it's catching the one tire and causing me to feel the "release" because the other tire is attempting to "catch up", but would that also make the grinding noise I'm hearing?
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1999 Dark Blue Ranger XLT Stepside 4x4 -V6 Flex fuel 3.0 liter Auto - Alloy wheels - P245/75R/16 BFG Land Terrain tires - L/S 4.10 - Tinted Windows -Power Mirrors and Windows - Cruise Control - Stock Head Lights - Black Altezza Tail Lights - Black Oval Nerf Bars - AVS Bugflector II - AVS In-Channel Vent Visors - Soft Snap-on Tonneau Cover
I might look small and yes, I'm a chick, but I shoot, throw, hit, and hunt. I highly suggest you don't mess with my truck!

Last edited by Kindy; 03-14-2011 at 08:35 AM.
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  #12  
Old 03-14-2011, 08:49 AM
Rango88 Rango88 is offline
N/A
 
Join Date: Jan 2011
Posts: 9,031
Default Re: Grinding sound when punching the gas?

Quote:
Originally Posted by Kindy View Post
BUMP please

----------

Ok, I researched it and now know what l/s and rear locker is, but how do I check to see which I have?

----------

From everything I'm reading in other posts now it sounds very much like it may be that I have the l/s locked (rear locker) and when running on pavement like I am it's catching the one tire and causing me to feel the "release" because the other tire is attempting to "catch up", but would that also make the grinding noise I'm hearing?
wouldnt running your VIN at your local Dealer tell you if you have a lock on it, just a suggestion, it would be good for your knowledge and to add to your signature
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  #13  
Old 03-14-2011, 09:03 AM
HazardousRanger HazardousRanger is offline
Hazardous to Your Health!
 
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Posts: 9,995
Default Re: Grinding sound when punching the gas?

Quote:
Originally Posted by Crowd88 View Post
wouldnt running your VIN at your local Dealer tell you if you have a lock on it, just a suggestion, it would be good for your knowledge and to add to your signature
http://www.fordrangerforum.com/drive...xle-codes.html

use this to find out
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Ford Ranger Edge Supercab, 2004 3.0 Auto, 2WD, 4.10 Axle 31x10.5x15 BF Goodrich All Terrain T/A KO's


My Truck Is My Mountain Bike's Ride!

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  #14  
Old 03-14-2011, 09:08 AM
Kindy Kindy is offline
"Spike" 1999 Blue Ranger
 
Join Date: Feb 2011
Posts: 405
Default Re: Grinding sound when punching the gas?

Quote:
Originally Posted by Crowd88 View Post
wouldnt running your VIN at your local Dealer tell you if you have a lock on it, just a suggestion, it would be good for your knowledge and to add to your signature
I did a VIN decode and under "locking differential" it states: N/A. It was a nice idea though, just didn't give me any more information.

----------

Quote:
Originally Posted by hazardousranger View Post
Hey thanks! Ok, my axel is F7 which means L/S 7.5' Capacity 2750 Ratio 4.10. Anyone want to tell me exactly what that means? Does that mean it's always locked?
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1999 Dark Blue Ranger XLT Stepside 4x4 -V6 Flex fuel 3.0 liter Auto - Alloy wheels - P245/75R/16 BFG Land Terrain tires - L/S 4.10 - Tinted Windows -Power Mirrors and Windows - Cruise Control - Stock Head Lights - Black Altezza Tail Lights - Black Oval Nerf Bars - AVS Bugflector II - AVS In-Channel Vent Visors - Soft Snap-on Tonneau Cover
I might look small and yes, I'm a chick, but I shoot, throw, hit, and hunt. I highly suggest you don't mess with my truck!
Reply With Quote
  #15  
Old 03-14-2011, 09:14 AM
HazardousRanger HazardousRanger is offline
Hazardous to Your Health!
 
Join Date: Jan 2011
Posts: 9,995
Default Re: Grinding sound when punching the gas?

Quote:
Originally Posted by Kindy View Post
I did a VIN decode and under "locking differential" it states: N/A. It was a nice idea though, just didn't give me any more information.

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Hey thanks! Ok, my axel is F7 which means L/S 7.5' Capacity 2750 Ratio 4.10. Anyone want to tell me exactly what that means? Does that mean it's always locked?
DUDEE...it means ur truck is awesome )))

okay 4.10 means u have the best gear provided by ford....perfect for running 33s and towing ur engien works less because of the gears....l/s does not mean its locked but yes u will always have l/s you have the 7 foot 5 inch axle..assuming cuz its a stepside (someone will need to explain that) 2750 is ur axle weight load bearing ratio....u shoulsdnt exceed ur trucks payload in the first place lol
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Ford Ranger Edge Supercab, 2004 3.0 Auto, 2WD, 4.10 Axle 31x10.5x15 BF Goodrich All Terrain T/A KO's


My Truck Is My Mountain Bike's Ride!

Class III hitch, Rhino Bedliner, Almost Maxed T-Bar Crank, Tuff Country Add A Leaf, Custom Low Anchor Points, OEM ('99) Tow Hooks, Pro Comp Offroad Lights , Mustang Dome Light, Clear Corners, Slim Toolbox, Blinker Mod,Cargo Brake Light Mod,Expo Lighted Visors, Ultra Silverstar heads/fogs, Fog/high mod, Reverse/switched lights, Bike Fork Mounts
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