Started months ago car would surge in traffic when accelerating, got the camshaft position sensors changed then the solenoids. Car has gotten worse now. When driving on the highway it seems to run fine but once it warms up and I get into stop and go traffic it will start surging then struggles to accelerate and starts popping, shop told me it had low oil pressure 13psi at idle when warmed up.

 

Welcome Back,

Here Are The Oil Pressure Specs For Your Engine!

Should Be Checked at Idle and At 2000 Rpm To Rule Out Issue!

Just a Thought. Be Sure & Run OEM Ford Filter If You Are Not!

See Engine Oil Pressure Test PDF!

Engine Displacement 4.957 L (302 CID)
Number of cylinders 8 Bore 92.2 mm (3.629 in) Stroke 92.7 mm (3.649 in)
Firing order 1-5-4-8-6-3-7-2
Spark plug 12405 Spark plug gap 1.25-1.35 mm (0.049-0.053 in)
Oil pressure at idle (engine at normal operating temperature) 69 kPa (10 psi)-103 kPa (15 psi)
Oil pressure at 2,000 rpm (engine at normal operating temperature) 207 kPa (30 psi)-276 kPa (40 psi)

Kc

FORD SHOP MANUAL INFO Also See VCT Diag PDF.

P0011 - Intake Camshaft Position Timing - Over-Advanced (Bank 1)
Description: This DTC sets when the variable camshaft timing (VCT) position is over-advanced. The test fails when the camshaft
timing exceeds a maximum calibrated value or remains in an advanced position.
Possible
Causes: VCT unit to camshaft alignment
Camshaft timing incorrectly set
Continuous oil flow to the VCT piston chamber
Erratic camshaft position due to low oil pressure
Oil flow restriction in the oil passages or the VCT valve body
VCT11 solenoid valve stuck open
VCT11 circuit open
VCT11 circuit short to voltage
VCT11 circuit short to ground
VPWR circuit open
Camshaft advance mechanism binding (VCT unit)
Damaged VCT11 phaser
Damaged camshaft position 11 (CMP11) sensor
CMP11 sensor circuits open
CMP11 sensor circuits short to voltage
CMP11 sensor circuits short to ground
Radio frequency interference
Diagnostic
Aids:
This DTC may be accompanied by other DTCs. Diagnose all CMP sensor DTCs first. If no CMP sensor related DTCs
are present, continue to follow diagnosis for this DTC.
This DTC is a functional check of the VCT unit. Diagnose any base engine concerns related to the engine oil pressure
or engine timing. Refer to the Workshop Manual Section 303-00, Engine System, Oil Pressure Test, to check the
engine oil pressure. Refer to the Workshop Manual Section 303-01, Engine, to check the engine timing and VCT
phasers.
Application Key On Engine Off Key On Engine Running Continuous Memory
All GO to Pinpoint Test HK

P0021 - Intake Camshaft Position Timing - Over-Advanced (Bank 2)
Description: This DTC sets when the variable camshaft timing (VCT) position is over-advanced. The test fails when the camshaft
timing exceeds a maximum calibrated value or remains in an advanced position.
Possible
Causes: VCT unit to camshaft alignment
Camshaft timing incorrectly set
Continuous oil flow to the VCT piston chamber
Erratic camshaft position due to low oil pressure
Oil flow restriction in the oil passages or the VCT valve body
VCT21 solenoid valve stuck open
VCT21 circuit open
VCT21 circuit short to voltage
VCT21 circuit short to ground
VPWR circuit open
Camshaft advance mechanism binding (VCT unit)
Damaged VCT21 phaser
Damaged camshaft position 21 (CMP21) sensor
CMP21 sensor circuits open
CMP21 sensor circuits short to voltage
CMP21 sensor circuits short to ground
Radio frequency interference
Diagnostic
Aids:
This DTC may be accompanied by other DTCs. Diagnose all CMP sensor DTCs first. If no CMP sensor related DTCs
are present, continue to follow diagnosis for this DTC.
This DTC is a functional check of the VCT unit. Diagnose any base engine concerns related to the engine oil pressure
or engine timing. Refer to the Workshop Manual Section 303-00, Engine System, Oil Pressure Test, to check the
engine oil pressure. Refer to the Workshop Manual Section 303-01, Engine, to check the engine timing and VCT
phasers.
Application Key On Engine Off Key On Engine Running Continuous Memory
All GO to Pinpoint Test HK