New Lariat - first issue - SCARY
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Mountain Pass
Joined: Feb 2004
Posts: 243
Likes: 13
From: Mass.
New Lariat - first issue - SCARY
I have less than 300 miles on my Lariat Screw. This morning, sitting in the driveway, started the engine, still in Park, I feel the transmission engage into Reverse for a split second. It seemed to "discover" itself it was still in Park, then disengaged. It all happened in a split second while I sat waiting for my son to grab his things for school. I usually don't use the parking brake on my level driveway, but sure will be now.
I had not heard of this on the forum - anyone else?
I had not heard of this on the forum - anyone else?
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Joined: Jan 2004
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Sounds like a safety issue you should report to NHTSA so someone else doesn't hurt somebody.
www.nhtsa.com
www.nhtsa.com
Senior User
Joined: Mar 2004
Posts: 181
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From: Michigan
It's physically impossible for one of these trucks to go into reverse by itself. I am a mechanic and have personally worked on the new 2004 F-150 in the prototype and production stages for over 2 years and trust me... it just can't happen.
The PRNDL is 100% mechanical and driver controled.
You probably heard the A/C blend door bang that some others here have experienced. When vacuum is restored to the HVAC system sometimes you'll hear and feel the blend door bang shut/open.
The PRNDL is 100% mechanical and driver controled.
You probably heard the A/C blend door bang that some others here have experienced. When vacuum is restored to the HVAC system sometimes you'll hear and feel the blend door bang shut/open.
Thread Starter
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Mountain Pass
Joined: Feb 2004
Posts: 243
Likes: 13
From: Mass.
If it's impossible then how did I feel inertia moving me in reverse? Don't discount the experience. I did hear the sound of "something" engaging, but it was not independent of movement and felt exactly the same as when I have shifted into reverse. Try again.
Thread Starter
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Mountain Pass
Joined: Feb 2004
Posts: 243
Likes: 13
From: Mass.
If it's impossible then how did I feel inertia moving me in reverse? Don't discount the experience. I did hear the sound of "something" engaging, but it was not independent of movement and felt exactly the same as when I have shifted into reverse. I can also tell you the automatic climate control and A/C unit was and has been "off" for several days since we have had "windows down" weather. Try again.
Senior User
Joined: Nov 2002
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From: Long Island
I too have had a similar problem with my 2002 f-250. Every once in a while if I start my truck without the parking brake set, it will lurch foward for a split second. Don't know why it does it but other people have had the same problem before
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Senior User
Joined: Apr 2004
Posts: 219
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From: Paris, TX
Honestly, I think it's crazy. It might be possible for a gear to slip into reverse, if something went major wrong, there would be absolutely no way for it to slip back into park! Had you just taken off the emergency brake maybe?
I'm not discounting what you're saying and I believe something "wrong" might have happened, but there's no way it could be slipping out of park and then back in. There are no electrical controls, it's a mechanical interconnect.
I'm not discounting what you're saying and I believe something "wrong" might have happened, but there's no way it could be slipping out of park and then back in. There are no electrical controls, it's a mechanical interconnect.
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Thread Starter
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Mountain Pass
Joined: Feb 2004
Posts: 243
Likes: 13
From: Mass.
ieee:
I will clarify. I was sitting with the engine idling, had not touched ANYTHING execpt to turn the key, then pressed the radio button "off". The shift lever was in PARK all along. It felt similar to the movement you get when shifting into PARK before coming to a absolute complete stop. This was no small movement. It was quite obvious. It seemed as though reverse was engaged without manual intervention, but while still in PARK.
At 41, I am neither inexperienced nor senile, Have driven hundreds of vehicles, and very loyal to Ford.
I will clarify. I was sitting with the engine idling, had not touched ANYTHING execpt to turn the key, then pressed the radio button "off". The shift lever was in PARK all along. It felt similar to the movement you get when shifting into PARK before coming to a absolute complete stop. This was no small movement. It was quite obvious. It seemed as though reverse was engaged without manual intervention, but while still in PARK.
At 41, I am neither inexperienced nor senile, Have driven hundreds of vehicles, and very loyal to Ford.
Senior User
Joined: Apr 2004
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I'll have to play with the shifter a little bit. I wonder if it's possible a slight adjustment could cause it to hover between P & R. See what happens when you try to shift without your foot on the brake pedal, it should'nt move. Do you have a console of column shift?
Thread Starter
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Mountain Pass
Joined: Feb 2004
Posts: 243
Likes: 13
From: Mass.
Triton:
I have column shift. It cannot be moved out of Park without the brake. Actually, the brake needs to be applied just to pull pack the lever, then you can release the brake and move freely.
Another description of what itfelt like: releasing the parking brake while in PARK on a slight incline. But again, my parking brake was not engaged. I'm just not in the habit of using it - until now.
I have column shift. It cannot be moved out of Park without the brake. Actually, the brake needs to be applied just to pull pack the lever, then you can release the brake and move freely.
Another description of what itfelt like: releasing the parking brake while in PARK on a slight incline. But again, my parking brake was not engaged. I'm just not in the habit of using it - until now.
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Joined: Apr 2004
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That's strange. My thought would be to get it to the dealer asap. I had an idea that the shift adjustment may be off. I have taken out trannys and reinstalled them, and noticed the linkages have to be carefully adjusted. Keep us posted. Good luck
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Joined: Jan 2004
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It seems possible that the transmission shifter could've been caught just right between "park" and "reverse". Just enough "park" to disable the ignition interlock and allow you to start the engine. Just enough "reverse" to allow the engine to slip into gear when it was idling. And when it did momentarily slip into reverse, the movement made it settle back into "park". Kind of like how you can make a light flicker by leaving the switch in the middle, arcing open and closed. Again, report it to NHTSA so someone else doesn't get hurt. And whoever said it was "impossible" to happen, hasn't met Mr. Murphy.
Thread Starter
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Mountain Pass
Joined: Feb 2004
Posts: 243
Likes: 13
From: Mass.
I have to say I am stumped by this also and not sure it can be repeated by the dealer, so I will have to wait for more input.
Although I am curious about the reply from greg250... I have another theory: PARK leaves some play in the drive line in any automatic trans. I wrote my driveway is level, but in truth there is an extremely slight decline. Could the truck have been somehow "stuck" in the uphill range of the transmission play, then (sounding like reverse being engaged) released to roll back to the other end of the range? I've never known an automatic to hang up at one end or another of this range of movement, but this would explain the actual movement. Any thoughts?
Although I am curious about the reply from greg250... I have another theory: PARK leaves some play in the drive line in any automatic trans. I wrote my driveway is level, but in truth there is an extremely slight decline. Could the truck have been somehow "stuck" in the uphill range of the transmission play, then (sounding like reverse being engaged) released to roll back to the other end of the range? I've never known an automatic to hang up at one end or another of this range of movement, but this would explain the actual movement. Any thoughts?