2002 Ford F-250 Stalling and lurching while driving

Tiny
MEDIC472
  • MEMBER
  • 2002 FORD F-250
  • V8
  • 4WD
  • MANUAL
  • 92,000 MILES
While driving at any speed the engine will try and stall and restart causing the engine to "lurch". If i'm at idle it will simply stall. The check engine light will come on when this happens and stay on until I turn the engine off. The light won't come on again until the engine tries to stall again.

I've had it to a mechanic who read the codes and found a bad cam sensor. He replaced the sensor. However the problem persists. After two trips back to the mechanic and nothing else was found wrong, I'm still experiencing the same problem.

Any suggestions?
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Saturday, May 9th, 2009 AT 9:22 AM

3 Replies

Tiny
KHLOW2008
  • EXPERT
Hi medic472,

Thank you for the donation.

Does the Check Engine Light still shows? If yes, what is the exact Diagnostic Trouble Code?
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Monday, May 11th, 2009 AT 10:46 AM
Tiny
MEDIC472
  • MEMBER
Since I posted this question I have narrowed the problem down to something to do with my windshield wipers.

To answer your question, the check engine light will come on but it always goes off when I turn off the truck. I have had a diagnostic check several times with no codes detected.

Anytime the truck is running, whether at an idle in neutral or while driving, if I use my intermittent windshield wiper the truck will try to stall. If I'm stopped it will stall, if I'm driving down the road it will "lurch" then resume running. I have to use the windshield wipers in continuous mode to avoid this. However, I do have to move the switch through the intermittent settings and occasionally it will try to stall for just that second or two.

My mechanic has changed out the wiper control unit with no change. I have had several diagnostics run and everyone is just scratching their heads.

This is very frustrating, can you please help?

Thank you
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Thursday, January 7th, 2010 AT 6:36 PM
Tiny
KHLOW2008
  • EXPERT
This is a bizzare problem that I have not encountered before and I am not sure if I can be of any help.

I will try to get other techinans to assist and hopefully wre can come up with something for you.

In the meantime, let us get to understand the situation better and hope we can do some testings to see if we can resolve the problem.

Here is a description of the intermittent wiper system.

Intermittent Speed Windshield Wipers

The intermittent wiper speed is activated with grounds controlled by the multifunction switch inputs to the windshield wiper motor module. The windshield wiper motor module then activates the windshield wiper run/park relay coil and switches voltage through the windshield wiper high/low relay. The high/low relay remains deactivated supplying the voltage to the wiper motor low speed input and activates the windshield wiper motor. When the windshield wiper motor module receives the grounded input, the motor continues to operate until Hall effect senses magnet to turn off run/park sense the output to the windshield wiper run/park software, deactivating the relay and disconnecting voltage to the wiper motor. The windshield wipers remain parked until the windshield wiper motor module completes a time-out and then repeats the intermittent windshield wiper cycle.

From the description above, one of the possible cause of the lurching could be due to a bad ground circuit for the intermittent wiper mode and it is draining the power supply or ground connections for the ignition switcch or engine controls.

Check the ground circuit connection from the multifunction switch t see if it is loose or contaminated.
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Friday, January 8th, 2010 AT 10:47 AM

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