Slipping/3 skip sensation
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From: Rolla, MO
Slipping/3 skip sensation
Okay, I'm having a 3 skip sensation upon acceleration. I'm not exactly sure where it is coming from but it sounds like it's somewhere in the rear of the truck. There is no sound to it I can just feel the motion. Not sure if it's the tranny slipping or maybe u-joints, or the rear diff. This past weekend I flushed the tranny out all new fluids and filter and I added some Lucas tranny slip just to be safe. No change. About 2 months ago I serviced the rear diff didn't notice any teeth gouged no metal shavings. So, maybe u-joints? I'm at a loss of ideas.
To add on this I feel the same sensation when I come to a complete stop and let off the brake some so you don't get that hard jerk. As I release the brakes to accelerate I feel the slip and as I step on the gas I get the 3 skip sensation. Now mind you I'm still moving through all this it's just the initial feeling. Once I'm going I don't feel anything. Any ideas fellas?
To add on this I feel the same sensation when I come to a complete stop and let off the brake some so you don't get that hard jerk. As I release the brakes to accelerate I feel the slip and as I step on the gas I get the 3 skip sensation. Now mind you I'm still moving through all this it's just the initial feeling. Once I'm going I don't feel anything. Any ideas fellas?
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Joined: Mar 2006
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From: Rolla, MO
I guess you can say it's a clunk but a 3 part clunk. Except there is no noise to it.
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Joined: Nov 2004
Posts: 399
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From: Draper, Utah
hmm the only thing i can think of that is pretty common with our trucks is the drive line splines. they run out of grease then they clunk when you go from a stop. read this and try it. even if it doesn't end up helping your problem you still might as well do it because your truck being a 2000 it probably needs it anyways. but i think this might be your problem.
http://www.eurekaboy.com/f250/slipjoint.htm
yours may or may not look like his driveline. but it should have the splines in it somewhere that need grease.
http://www.eurekaboy.com/f250/slipjoint.htm
yours may or may not look like his driveline. but it should have the splines in it somewhere that need grease.
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Joined: Aug 2009
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From: Show Low, AZ
Okay, I'm having a 3 skip sensation upon acceleration. I'm not exactly sure where it is coming from but it sounds like it's somewhere in the rear of the truck. There is no sound to it I can just feel the motion. Not sure if it's the tranny slipping or maybe u-joints, or the rear diff. This past weekend I flushed the tranny out all new fluids and filter and I added some Lucas tranny slip just to be safe. No change. About 2 months ago I serviced the rear diff didn't notice any teeth gouged no metal shavings. So, maybe u-joints? I'm at a loss of ideas.
To add on this I feel the same sensation when I come to a complete stop and let off the brake some so you don't get that hard jerk. As I release the brakes to accelerate I feel the slip and as I step on the gas I get the 3 skip sensation. Now mind you I'm still moving through all this it's just the initial feeling. Once I'm going I don't feel anything. Any ideas fellas?
To add on this I feel the same sensation when I come to a complete stop and let off the brake some so you don't get that hard jerk. As I release the brakes to accelerate I feel the slip and as I step on the gas I get the 3 skip sensation. Now mind you I'm still moving through all this it's just the initial feeling. Once I'm going I don't feel anything. Any ideas fellas?
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Joined: Mar 2006
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From: Rolla, MO
Do you feel this cluck just before you come to a complete stop? Then do you feel like it is hesitating just a second when you take off and you can feel a clunk also? This is happening to my truck to. Getting ready to take it to my mechanic to take a look at it because it doesn't feel right to me.
Yes, sometimes I do feel the clunk just before coming to a complete stop. Mine doesn't have the hesitation upon accelerating. It does have hesitation if I try to get on it and take off.
To answer Megawatt00, I used the Royal Purple fluid which has the modifier built in. Do you think I still need to add some anyway? I willing to try anything at this point.
I'm planning on doing the slip joint regreasing next week. If that solves the problem I will let you all know.
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From: Rolla, MO
Well,
I still haven't had a chance to do the slip joint re-grease to see if that's the problem. How about U-joints? Does anyone reccomend a good replacement u-joint that's greasable? How do you tell if your u-joints are shot? I did notice that the companion flange has a build up of oil on it.
In my previous post I answered megawatt00 and told him I didn't put any friction modifier in the rear diff because I used Royal Purple which had the additive built in. Should I still add the modifier anyway? I don't get any chattering or clunking when I turn and I thought that is what the modifier is for?
If it weren't for this clunking sensation my truck would running fine. I could still use some ideas/advice. Thanks.
I still haven't had a chance to do the slip joint re-grease to see if that's the problem. How about U-joints? Does anyone reccomend a good replacement u-joint that's greasable? How do you tell if your u-joints are shot? I did notice that the companion flange has a build up of oil on it.
In my previous post I answered megawatt00 and told him I didn't put any friction modifier in the rear diff because I used Royal Purple which had the additive built in. Should I still add the modifier anyway? I don't get any chattering or clunking when I turn and I thought that is what the modifier is for?
If it weren't for this clunking sensation my truck would running fine. I could still use some ideas/advice. Thanks.
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Joined: Dec 2001
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From: Kelowna B.C.
Well,
I still haven't had a chance to do the slip joint re-grease to see if that's the problem. How about U-joints? Does anyone reccomend a good replacement u-joint that's greasable? How do you tell if your u-joints are shot? I did notice that the companion flange has a build up of oil on it.
In my previous post I answered megawatt00 and told him I didn't put any friction modifier in the rear diff because I used Royal Purple which had the additive built in. Should I still add the modifier anyway? I don't get any chattering or clunking when I turn and I thought that is what the modifier is for?
If it weren't for this clunking sensation my truck would running fine. I could still use some ideas/advice. Thanks.
I still haven't had a chance to do the slip joint re-grease to see if that's the problem. How about U-joints? Does anyone reccomend a good replacement u-joint that's greasable? How do you tell if your u-joints are shot? I did notice that the companion flange has a build up of oil on it.
In my previous post I answered megawatt00 and told him I didn't put any friction modifier in the rear diff because I used Royal Purple which had the additive built in. Should I still add the modifier anyway? I don't get any chattering or clunking when I turn and I thought that is what the modifier is for?
If it weren't for this clunking sensation my truck would running fine. I could still use some ideas/advice. Thanks.
Post Fiend
Joined: Feb 2008
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From: Lancaster, Pa.
If your not getting any chattering or clunking from the rear, I would say your fine with the modifier. I got the RP in my diff and I had to add just a tiny bit of modifier because mine was scratching around turns but all is fine now. Just for the heck of it, hows your tranny fluid and transfer case oil?? Other than that, your driveshaft joints are the only thing I can think off. A bad rear, clutches, subscribing.
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Senior User
Joined: Mar 2006
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From: Rolla, MO
If your not getting any chattering or clunking from the rear, I would say your fine with the modifier. I got the RP in my diff and I had to add just a tiny bit of modifier because mine was scratching around turns but all is fine now. Just for the heck of it, hows your tranny fluid and transfer case oil?? Other than that, your driveshaft joints are the only thing I can think off. A bad rear, clutches, subscribing.
Okay cool, I will add some then. As for the tranny and transfer case, they just got changed with fresh fluid. So, maybe replacing the joints might make the difference. I'm wondering if I should check the rear diff again even though I just replace the fluid 3 months ago?
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Senior User
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From: Rolla, MO
Not quite. I've narrowed it down to the slip joint and U-joints. I'm going to do the slip joint regreasing this weekend along with replacing my u-joints on my rear drive shaft. I took a look at them and I saw how bad they were....yikes!! Looks like they have been worn out for some time now, the freaking caps are all loose and there is hardly any grease left in these things. One of them looks likes the needle bearings are poking out.
I will let you know how it turns out this weekend and I will post back with the result.
I will let you know how it turns out this weekend and I will post back with the result.
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Joined: Sep 2006
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From: Warsaw, IN.
THEDON117 When I had gone through and replaced my drive line universals, I also replaced the support bearing, this seemed to help the start slip I was feeling, the rubber around the bearing wears and allows the bearing to move around at stop and start because of torque. FYI My parts supplier wanted to know the shaft size where the bearing is located.
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Senior User
Joined: Mar 2006
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From: Rolla, MO
THEDON117 When I had gone through and replaced my drive line universals, I also replaced the support bearing, this seemed to help the start slip I was feeling, the rubber around the bearing wears and allows the bearing to move around at stop and start because of torque. FYI My parts supplier wanted to know the shaft size where the bearing is located.