'99 F150 XLT Surging/Bogging
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Joined: Mar 2003
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'99 F150 XLT Surging/Bogging
Info for All.
Thanks to everyone for posting their findings and issues. It was most helpful to see other's issues and solutions.
Here's Mine:
My '99 F150 Ext. Cab w/ 5.4L V8 started surging and bogging down while going down the highway.
The truck felt as though it was being kicked in the rear, almost like driving over a rutted dirt road.
When the truck was in Neutral or Park the engine would run normally, rev normally etc... The bogging/surging only occurred while under load.
The dealer discovered the Num. 4 Coil Wire was misfiring.
I also had them clean the fuel system and replace the fuel filter.
What I difference! The Coil Wire was only failing after the truck was warm and the engine RPM was over 1500.
WARNING!!
A SINGLE COIL WIRE IS ~$100. OUCH! What happened to the days when you could buy all 8 plug wires for $50.
Thanks to everyone for posting their findings and issues. It was most helpful to see other's issues and solutions.
Here's Mine:
My '99 F150 Ext. Cab w/ 5.4L V8 started surging and bogging down while going down the highway.
The truck felt as though it was being kicked in the rear, almost like driving over a rutted dirt road.
When the truck was in Neutral or Park the engine would run normally, rev normally etc... The bogging/surging only occurred while under load.
The dealer discovered the Num. 4 Coil Wire was misfiring.
I also had them clean the fuel system and replace the fuel filter.
What I difference! The Coil Wire was only failing after the truck was warm and the engine RPM was over 1500.
WARNING!!
A SINGLE COIL WIRE IS ~$100. OUCH! What happened to the days when you could buy all 8 plug wires for $50.
New User
Joined: Sep 2002
Posts: 20
Likes: 0
From: Miami USA
'99 F150 XLT Surging/Bogging
Same thing happened to my '00 Chateau. It started surging, the check engine light went on, and I got a code of 0305, misfire on #5 cylinder.
Changed the coil on #5 and problem solved. (PS - wholesale price from Ford is $45/coil).
Changed the plugs while I wa at it - Bosch platinums, took me three hours, and I did remove the fuel rail to do it.
Dave in Miami
Changed the coil on #5 and problem solved. (PS - wholesale price from Ford is $45/coil).
Changed the plugs while I wa at it - Bosch platinums, took me three hours, and I did remove the fuel rail to do it.
Dave in Miami
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Joined: Aug 2002
Posts: 12,679
Likes: 15
From: BC, Canada
'99 F150 XLT Surging/Bogging
Thanks for posting your fixes 
That's good info for others.
Feel free to ask questions or leave answers anytime.
dtilden have you had to do much work under the engine cover in your van? I find it easiest to pull out the front seats to do most things under there. They both come out in about 5 minutes and it sure makes it easier to work
That's good info for others.
Feel free to ask questions or leave answers anytime.
dtilden have you had to do much work under the engine cover in your van? I find it easiest to pull out the front seats to do most things under there. They both come out in about 5 minutes and it sure makes it easier to work
New User
Joined: Sep 2002
Posts: 20
Likes: 0
From: Miami USA
'99 F150 XLT Surging/Bogging
Dave, it sure would make it easier to take out the front seats. They are really in the way!
Haven't done any engine work up till now, and this was a half in, half out job. I sure will remember your tip next time I need to get into the motor from the inside.
Dave in Miami
Haven't done any engine work up till now, and this was a half in, half out job. I sure will remember your tip next time I need to get into the motor from the inside.
Dave in Miami
