Skip the auto shop - Our mechanics make house calls

Q: Variable valve timing solenoid

asked by on

Engine light came on car (2008 ford expedition el 5.4L) had little to no hesitation, oil pressure was fine, temps were good just a check engine l was near a pep boys, took it right there after they checked it out, they said it was a variable timing solenoid but the mech noticed the passenger side valve cover had a crack near the front of the valve cover which had led to a little bit of oil to come out, they said i would need another engine, my original engine just turned 124,000 miles on it , and all maintenance is up to date as well as all scheduled oil changes.

My car has 124000 miles.
My car has an automatic transmission.

Hi there. From the description you have provided, Check Engine Light on, being told VVT (variable valve timing) solenoid is bad, cracked valve cover, and now needs an engine is all questionable. Ford and their "5.4L VVT issues". I have seen all aspects of failure in this particular system.

Why you have been told you need an engine, for a cracked valve cover is somewhat confusing, unless the timing chain caused the crack. Timing chain(s) and guide(s) replacement can be an expensive repair, and pros and cons need to be considered on an engine with 124,000 miles. Typically, noise from the cam phaser (clacking) and rough idle are associated with a VVT failure.

Possible causes for this is low engine oil pressure, one or both VVT solenoids failing, or one or both cam phasers failing.

There are necessary diagnostic steps required to confirm the fault(s). I recommend having your vehicle’s Check Engine Light fully diagnosed in person to pinpoint the problem and move forward with necessary repairs.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Oil change - Synthetic 5k or 10k?

You should follow the dealer or manufacturer recommended change intervals. Your vehicle calls for oil changes every 6 months or 5,000 miles. Using a different oil that is synthetic you still should go with recommended intervals since the oil filter...

Q: Car doesn't go into reverse, but when it drives, it goes slow and shakes very hard early. Smoke started coming out

Hello - the symptoms you provide regarding the lack of Reverse suggest either the Reverse clutches are burned out, or the Reverse piston servo seals are leaking so the Reverse clutches don't actuate. With the "shaking in Drive" you mention...

Q: On a 2008 enclave there is a p0018 code. How do you know if it's a failed sensor or timing chain?

Hi there. Locate the crankshaft position sensor and check for power to it with the key on. If there is power, then with using a paper clip to back probe the wiring with the plug installed on the sensor, check...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...