Hello everyone,

I've been having a problem with my 1999 Ford Ranger 4x4. When taking off from a stop, the truck jerks once or twice. It's not a really really hard jerk, but it's noticeable. At first, I thought the universal joints were bad. To check this out, my dad and I crawled under the truck and tried twisting the driveshaft. The rear and front joints looked fine and had no movement. Next, we put the truck in neutral and put the emergency brake on. Then we tried moving the driveshaft. It had about 1/16 to 1/8 of a turn play in it. What do you guys think?

Thanks!

 

lol tittle made me laugh like a ****! i need to get my head outta the gutter

 

i think it does not sound like a u-joint problem. you would hear that as a banging more than feel a jerking

 

prob have some axel wrap

 

Slip yoke needs lube?

TSB 04-23-7

11/29/04
DRIVESHAFT - THUMP/CLUNK ON LIGHT
ACCELERATION FROM STOP OR WHEN BRAKING
AND COMING TO A STOP - RANGER 4X4 SUPER
CAB

FORD:
1998-2005 Ranger

This article supersedes TSB 03-26-2 to update the vehicle model years and service procedure.
ISSUE
Some Ranger 4X4 Super Cab vehicles may exhibit a low frequency thump type noise/vibration on light acceleration from a stop and/or when coming to a stop with light to moderate braking. This may be caused by axle wind up during acceleration or deceleration, creating a stick/slip condition at the rear driveshaft slip yoke splines.

ACTION
A new type of grease is available which will greatly reduce the sticking/binding in the slip yoke during acceleration and deceleration. To service, apply the new grease to the rear driveshaft slip yoke splines. Refer to the following Service Procedure.

 

Auto or manual tranny ?
If a manual , then the flywheel may be glazed.

 

Damn man, I'm glad I'm not the only one, I was thinking Oh Boy, what did Jet Blue do now...

 

It's an automatic transmission

 

Does anyone know what the "new type of grease" is that was mentioned in the article?

 

how the **** would a glazed flywheel cause a jerk or bang? it would just slip

 

well to tell ya the truth i was lookin at a ranger for my step-bro and it kinda did that its not a noise more just like a thud or something like that and i talked to a trans guy and he said it was fluid blow-by in the auto trans.

 

Unless it suddenly grabs

 

I think I am having the same issue. I pulled the bushing clamp off pulled it back and sprayed white lithium in there but it didn't seem to help. I didn't take the drive shaft off. Any ideas?

 

LOL you're not alone...

But if it's an auto or a manual really makes a difference.. My auto started to act up in a "shuddering" way before it went out... So kinda like a jerking feeling... I would rather have a problem with the clutch/flywheel than a bad auto.. haha

 

Auto Trans, it only dies it when at a full stop.

 

Does it ever slip between shifts? (the rpm's race up a little while mid shift)

 

And when was the last time that your tranny fluid was flushed??

 

Doesn't slip. I just got it a few days ago so no idea on the fluids. Another user suggested rear axle pinion.

 

Sounds like you can eliminate the trans.. That's a very good thing lol

 

Still having issues. Had the slip yoke serviced. It jerks on pavement but not on dirt when i punch it, i'm thinking fuel injectors/filter or rear diff, i am pretty sure its a limited slip and maybe its causing the jerkiness as it kicks in. It doesn't do it all the time and i am totally stumped.

 

Maybe the torque converter? I might be totally wrong on this.... Let's see what other people have to say

 

It goes into gear just fine. No gear slippage or hard shifts

 

Okay well that's good. Have you taken it to a shop to get it diagnosed yet?

 

When I took it to the dealership they said slip yoke, serviced it and still had the same problem cost 40$. So I think ill take it back and have them check it again. I am also thinking about seafoming it because I have a feeling it sat for awhile, I found mouse turds in the air intake case. Still hopping I have a clogged fuel filter or injector. I update what the dealership tells me on Monday.

 

Hey guys I know I don't have a ford ranger but I have a ford f150 4x4 that is doing similar to what some of you have experianced... this is one of the only places I've seen so far to probably find my answer to know if I'm having the exact same problem or not I hope so!! I have replaced my transmission i have a brand new torque converter in it.. I have replaced the transfercase with one that had way lower miles on it and everything has fresh new fluids and it's no cheap fluid either. Being said after all this everything seemed good till test drive when I reversed to the the road went good when I put it in drive seems like it takes a minute to engage fully and then first taking off it acts like it doesnt wanna go but it I keep tapping the gas it catches then I have no more problems after that...I tried something by hitting the gas hard when doing this and it revved up a bit caught then jerked and tire spun and squealed and again good after that kept driving. Please someone tell me if I done something wrong which I'm more than sure didnt I've never had this problem before