Ok i have a 2006 ford ranger with P0352 engine code. Cylenders 3 and 4 have very little spark. They do not change the way the truck runs when disconnecting. All others do. I changed the coil, no change. Installed new plug on connector to coil. Truck ran great for a little while and then returned to running rough and no power. Please Help

Run a compression check?,

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2021 F150 5.0 Screw

Past:18 F150 2.7, 16 F150 5.0, 14 F150 5.0, 07 F150 5.4, 03 Ranger 4.0

Master Certified Ford Parts / Warranty Admin

I doubt it is compression. They are on 2 different heads. I would check that connection again and then check grounds. The 3 and 4 are paired together.

Any tsb's for this?

SFDROIDBIONICUT2

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2004 Ext Cab, 4WD, 4.0, Auto, 154k. (4.0 engine is out of a 2009 Ranger w/96k) ( as of 7/1/2017)

2004 Ranger, Ext Cab, 2WD, 3.0, 5 speed , 4WABS, crank windows, no cruise, Edge 116k.(6/5,2014) (SOLD).
1999 Ford Ranger, Reg Cab, 2.5, 5 speed, 2WD, no AC, 150k (SOLD).