07effonefifty

Hey Guys,

I have a 2007 Ford F-150 XL 2wd automatic with the 4.2 V-6 engine. It has just over 60,000 miles.

I noticed that when I accelerate from a dead stop (this only happens when I stop completely), I feel a bit of a shudder before I get to 5mph. It's fairly subtle, but noticeable to the driver.

Also, when I come to a complete stop, I hear a bit of a "thunk" after the body of the truck has reached its' resting position.

Is this a common issue? I'm racking my brain trying to figure out what this could be. U-joints? Limited slip rear end? Transmission??

Any help would be greatly appreciated!
Dan

bonser216

o gee dan.. that could be a tricky one to find. does it do it in reverse at all?? does your truck have limited slip in it? is it a front to back like "bucking" shudder kinda like maybe a miss would feel like? if it was U-joints it should be pretty easy to see those. you can just check the drive shaft u-joints and see if they look worn or dry. if they are dry i would replace them anyways they are fairly cheap and simple to install with basic tools. when you let your foot off the break and it starts to creep forward will it do it or is it only when your tapping the gas? ill also check for TSB's tomorrow at work if i get a chance see if anything comes up.

07effonefifty

Hi,

It doesn't do it in reverse that I've ever noticed. Yes, it does have limited slip. It's definitely not "bucking", just a little driveline vibration/slippage feeling. It doesn't happen when I'm creeping... Just when I hit the gas. I will take a look at the u joints. I also heard that there were some issues with the slip yoke on these trucks getting too dry and needing grease..?? Thanks for your help!

bonser216

08/20/07
SPARK KNOCK UNDER LIGHT LOAD AND
ACCELERATION - 3.8L, 3.9L, AND 4.2L - SPLIT PORT
INTAKE MANIFOLD RUNNER CONTROL (IMRC)

FORD:
2001-2004 Mustang
1996-2003 Windstar
1997-2003 E-150
1997-2008 F-150
2004-2007 Freestar

MERCURY:
2004-2007 Monterey

ISSUE
Various vehicles equipped with a 3.8L, 3.9L or 4.2L engine and Split Port IMRC may exhibit spark knock under light load and acceleration.

ACTION
Follow the Service Procedure steps to correct the condition.

SERVICE PROCEDURE
Inspect for disconnected IMRC actuator rods.
1.Check both right hand and left hand side IMRC rods are properly attached to the actuator motor and intake manifold runner.
2.If the IMRC actuator rods are found to be connected properly, do not continue with this TSB. Refer to Powertrain Control/Emission Diagnosis Manual.
3.If any IMRC actuator rods are disconnected, refer to Workshop Manual (WSM), Section 303-14 for IMRC service.


4.If any IMRC actuator rod linkages are found disconnected, replace all four (4) linkage rod retainers. (Figure 1)
WARRANTY STATUS: Eligible Under Provisions Of New Vehicle Limited Warranty Coverage
IMPORTANT : Warranty coverage limits/policies are not altered by a TSB. Warranty coverage limits are determined by the identified causal part.

OPERATION DESCRIPTION TIMEMT071617 Use SLTS Operations If Actual Available; Claim Additional Time Diagnosis Or Labor Performed As Actual Time
DEALER CODING
CONDITIONBASIC PART NO. CODE9F955 33

07effonefifty

Thanks! I will check this out.

To me though, it seems like more of a transmission/driveshaft/rear end issue than an engine issue. I could be mistaken though. I will definitely check this out.

Thanks!
Dan

07effonefifty

It doesn't say anything for the 07 model year, but from what I can find, this sure sounds like it could be the issue to me... what do you think?

TSB 04-26-6
12/31/04
CLUNK OR BUMP WHEN STARTING FROM A STOP
FORD:
1997-2005 E-Series, F-150, F-Super Duty
ISSUE
Some 1997-2005 E-Series/F-150/F-Super Duty 4x2 vehicles may exhibit a
driveline clunk or bump that occurs as the vehicle starts to move forward, following
a stop. This condition may be caused by the

output shaft

OPERATION DESCRIPTION TIME

1. Verify the condition.
2. Remove the driveshaft per Workshop Manual Section 205-01. Be sure to
index-mark the driveshaft during removal to maintain alignment during
reinstallation.
3. Lubricate the

5. Verify the repair.

jlwalbaums

I had the exact same issue on my 2004 f-150. I had the tramsmission cleaned, flushed and fluid replaced at my local Ford dealer and the shudder seems to be gone. I've only driven it twice since it was flushed, but so far so good.

GATORB8

One more for good measure:
TSB 09-20-14

10/19/09
UN-COMMANDED TCC APPLY ON THE 1-2 SHIFT
CAUSING PERCEPTION OF HESITATION AND/OR
LACK OF POWER DURING SHIFT

FORD:
2005-2010 Crown Victoria
2005-2006 Expedition
2005-2010 E-150, E-250, E-350, F-150

LINCOLN:
2005-2010 Town Car
2006-2008 Mark LT

MERCURY:
2005-2010 Grand Marquis

This article supersedes TSB 6-22-7 to update the Issue Statement, vehicle model years and model line covered.
ISSUE
Some 2005-2010 vehicles equipped with a 4R70/75E-W transmission may experience an un-commanded torque converter clutch (TCC) apply or TCC partial apply immediately after the 1-2 shift. This may result in the perception that the vehicle lacks power or that the transmission is up-shifting too early. Additional symptoms of uncommanded TCC apply when coming to a stop (before the 2-1 downshift is commanded), are engine stalling or lugging when engaging manual 2nd while at a stop and code P1742 may be present in continuous memory. However, the vehicle should operate normally in park, reverse, neutral and manual 1st gear.

ACTION
Follow the Service Procedure for verification and repair.

SERVICE PROCEDURE
1. Monitor (TCC %) solenoid command state - duty cycle and (TC SLIP ACT) torque converter clutch slippage - RPM, while in 2nd, 3rd or 4th gear with a TCC % reading 0.


a. If TCC % = 0 and TC SLIP ACT = less than 20 RPM then inspect the number 7 check ball in the main control valve body for damage. Replace as required following the appropriate Workshop Manual (WSM) under Disassembly and Assembly of Subassemblies - Main Control Valve Body. (Figure 1)

NOTE THIS PROCEDURE IS PERFORMED IN 2ND GEAR AUTO (NOT MANUAL 2). MONITOR (TC SLIP ACT) AFTER THE POWERTRAIN CONTROL MODULE (PCM) COMMANDS 2ND GEAR AND BEFORE THE VEHICLE SPEED SENSOR (VSS) READS 35 MPH (56 KM/H).

b. If you receive any other reading, this procedure does not apply; follow normal diagnostic procedures as outlined in the appropriate WSM.

NOTE IT IS NORMAL FOR THE PCM TO COMMAND 4TH GEAR AT SPEEDS AS LOW AS 19 MPH (30 KM/H) WITH LIGHT ACCELERATION WHEN THE THROTTLE POSITION IS LESS THEN 20%

07effonefifty

Thanks, guys. Maybe I just need to resort to taking it to the dealer to have it looked at...

With all of these possible issues I'm hearing about, I'm developing "vehicle hypochondria"

I'll keep you all posted on what I find out. Hopefully it's as simple as greasing my slip yoke spline! Thanks for your help!

Dan

Spiderman1490

It's your drive shaft. I have the same problem in my 07 f150 4.6. The splines in the slip yoke has gotten too dry and they are just klinking back and forth cause there is no grease to cushin it. I talked to ford and they said it needs to be taken off and taken apart at the slip yoke and regressed. They charge 80$ but they said it would just keep coming back every few months depending on how much you drive. They also said it's not hurting anything. But personally it's earatating. I haven't messed with it yet cause I haven't figured what grease is best. I'd call your dealer an ask what kinda grease and then do it yourself every time it needs done. They might even tell you step by step what to do. Good luck. Hope It helped