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Author Topic:   4x4 Low - Service Engine Soon
GTRocks
Gearhead

Posts: 3631
From: Lusby, MD
Registered: Jun 99

posted 01-10-2005 10:39 PM     Click Here to See the Profile for GTRocks   Click Here to Email GTRocks     Edit/Delete Message   Reply w/Quote
If you exceed recommended speeds while in 4x4 low, will that cause the service engine soon light to come on? My wife didn't understand how to get the truck out of 4x4 low and went to work (local) in 4x4 low. The truck (2001 Expedition) now has the service light on. So:

1. What's your guess on the code it threw?

2. Do you think she did damage (it's out of 4x4 now and seems to ride ok)?

3. Will hooking up a code reader clear the code?

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MLariviere
Moderator

Posts: 3984
From: Biddeford,Me.USA
Registered: May 99

posted 01-11-2005 09:44 PM     Click Here to See the Profile for MLariviere   Click Here to Email MLariviere     Edit/Delete Message   Reply w/Quote
I doubt she did anything bad. It probably has a redline limit on the motor and tripped an error on the ECU. I don't know what code you'll get,but you could probably clear it by unhooking the battery. Isn't the 4WD selector a knob on the dash?

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GTRocks
Gearhead

Posts: 3631
From: Lusby, MD
Registered: Jun 99

posted 01-12-2005 06:57 AM     Click Here to See the Profile for GTRocks   Click Here to Email GTRocks     Edit/Delete Message   Reply w/Quote
She slid off the side of the driveway (new house) I guess and popped it over to the 4x4L setting (yes, dash switch) in a panic not to go into the ditch. Then she popped it back out once she was on the road again, but couldn't get the hubs to disengage despite the dash setting. It is harder than you would think. Typically, you just put them in reverse, but this thing is a little more involved. You have to put it in Neutral or park also. She swears she didn't crack 3k rpms, and it's only about 4 miles to work, so I'm not thinking she did any damage either, but I don't have a clue what that code would be unless there's a speed limit in that mode? I'm going to try to see if my code reader will fit her truck and see what it threw. I'm kinda curious. I didn't know about the battery though, that's good to know. I thought it stored them in a EEPROM which wouldn't erase through a loss of power? Maybe they're still stored, but that resets the dash light?

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BlueMule
Gearhead

Posts: 1463
From: Kent Island, MD USA
Registered: Sep 2002

posted 01-12-2005 07:31 AM     Click Here to See the Profile for BlueMule   Click Here to Email BlueMule     Edit/Delete Message   Reply w/Quote
Like Mike said, disconnect the battery, turn on the headlights, go have lunch, hook it all back up, and fire that sucker up. You'll have to re-do your radio pre-sets and clock. I think I'd rather have the code read, just to cure my curiosity. You can take it to a Advance Auto Parts or any other of those big chains that'll read your codes for free. They'll rest them too.

------------------
-Paul

70 Mach1 351C/FMX
79 Ranchero GT 302 smogger/C4
97 Expedition XLT 5.4
00 SVT f150 Lightning 4149 of 4966 Born on: 06/26/2000

'If you're not the lead dog, the view never changes.'

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SteveLaRiviere
Administrator

Posts: 43151
From: Saco, Maine
Registered: May 99

posted 01-12-2005 08:38 AM     Click Here to See the Profile for SteveLaRiviere   Click Here to Email SteveLaRiviere     Edit/Delete Message   Reply w/Quote
Better yet, on modern OBD systems, they reset themselves if the vehicle has {I think} 3 restarts without the symptom of the trouble detected.

------------------
'70 Mustang Mach 1 351C 4V/FMX/3.25 Open
'70 Mustang Convertible 250 I6/3 speed/2.79 Open
'72 Mustang Sprint Hardtop 351C 4V/FMX/4.30 Trac Loc
'94 F-150 XL 5.8L/E4OD/3.55 Limited Slip

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GTRocks
Gearhead

Posts: 3631
From: Lusby, MD
Registered: Jun 99

posted 01-13-2005 09:12 PM     Click Here to See the Profile for GTRocks   Click Here to Email GTRocks     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by SteveLaRiviere:
Better yet, on modern OBD systems, they reset themselves if the vehicle has {I think} 3 restarts without the symptom of the trouble detected.


Yep. I'm on travel right now...Boston

Called Sandy a few minutes ago and she said it reset itself. Guess it's all good.

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hwyman3
Gearhead

Posts: 490
From: Southern Maryland, USA
Registered: Jul 2004

posted 01-13-2005 10:14 PM     Click Here to See the Profile for hwyman3   Click Here to Email hwyman3     Edit/Delete Message   Reply w/Quote
Glad to hear it has cleared itself out! That is good news!

------------------
Greg W.
MCA #52100
2002 Laser Red GT Coupe
1991 F-150 XLT 4x2 5.0
Southern Maryland Mustang Club

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tr1gger5
Journeyman

Posts: 73
From: Valley Lee, MD
Registered: Apr 2004

posted 01-17-2005 06:16 PM     Click Here to See the Profile for tr1gger5   Click Here to Email tr1gger5     Edit/Delete Message   Reply w/Quote
Sandy's trying to tell you that she wants her Ranger back!

------------------
Jeff
'67 S-code Stang coupe
'03 Ranger FX4

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Ryan Wilke
Gearhead

Posts: 2060
From: Stanton, Michigan 49707
Registered: Oct 2000

posted 01-23-2005 11:01 AM     Click Here to See the Profile for Ryan Wilke   Click Here to Email Ryan Wilke     Edit/Delete Message   Reply w/Quote
You may want to check the owners manual for any directions on disengaging techniques.... I thought you had to backup ~20 ft to disengage the front axles???

Ryan

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