How To Repair Intake Manifold System Control Solenoid Failure 2010 Journey And How To Fix
Final Updated on November 2, 2022
To understand the variable valve timing (VVT) solenoid and associated oil command valve (OCV), information technology will assistance to know the history of this device and how it benefits our cars, SUVs and lite trucks today.
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The valves in the engine of your machine, SUV or truck operate to command the flow of air, fuel and exhaust gases through the engine combustion chambers. These valves are pushed open and closed by camshafts.
There may be as many as 4 camshafts depending on the engine type in your vehicle. These camshafts are typically chain or belt driven from the engine crankshaft.
The cams in vehicles of decades past provided a fixed pattern of valve performance with respect to the position of the pistons. This pattern (called valve timing) was pre-determined and designed into the engine by the manufacturer. Valve timing was gear up to to attain the best performance while yielding acceptable fuel economy.
Variable Cam Timing
So variable cam timing (VCT) came along. This concept introduced cam timing that varied around a predetermined pattern of valve functioning.
Patents for such systems on early on engines date equally far back as the 1920s. Engineers reasoned that varying the valve functioning as engine speed changes could offer both operation and fuel economy benefits.
Alfa Romeo was the first manufacturer to offer VCT on a production automobile. This characteristic came standard on the 2.0L fuel injected engine in the 1980 Spider. The blueprint was very bones and provided intake valve retardation equally engine speed increased.
The result of this mechanism was to add mid-range power. This one change greatly benefitted this modest Alfa engine.
Gradually, variable cam timing began to catch on. Honda incorporated this in their VTEC engines in 1989. Porsche introduced it with the VarioCam in the V8-powered 928 model. Variable cam timing too began to meet broad acceptance in motorcycle engines in the early 2000s.
Borg Warner recently adult a VCT arrangement for the 2022 Hyundai Lambda II engine series. This system incorporated the showtime utilize of a cam mid-position lock to hold the cams at a center setting when no advance or retard was required.
Today virtually all automobile builders take jumped on board the VCT train. And across only performance and fuel economy benefits, VCT has been found to assistance reduce vehicle emissions such as oxides of nitrogen.
What is an Oil Control Valve (and How Does It Piece of work?)
In about modernistic automobiles engines, varying the valve timing is done by cam control mechanisms that alter cam position with respect to the engine crankshaft.
These systems utilize the readily available oil flow from the engine lubrication system to do the work. Here's how that happens:
You are stopped at an intersection or just cruising along and you lot step on the gas. Signaled by the ECU (electronic control unit), the variable valve timing solenoid opens its integral oil control valve. When this valve opens, oil under pressure level flows to the cam control mechanism quickly irresolute cam position with respect to the driving chain or belt.
The cam position can exist advanced or retarded depending on the engine speed and throttle (gas pedal) position. When the engine reaches a steady speed, the OCV closes and the cams return to their initial positions. This action occurs almost instantly and is invisible to the commuter.
At that place is a secondary do good to this system. The OCV directs a continuous flow of oil to the timing chain and associated sprockets increasing lubrication and cooling oil flow to these parts.
Run into Also: Advantages of Variable Valve Timing (VVT)
Bad Oil Control Valve Symptoms
The VVT solenoid and OCV contain an integrated unit. This unit of measurement can malfunction. When information technology does, whatever or all of these symptoms can alert you to problems:
#one – Rough Idle
Under normal weather, the VVT organisation activates at higher RPMs or when under load bearing weather condition such equally driving up a hill. But with a faulty oil control valve or VVT solenoid, excess engine oil may be introduced into the VVT system which can outcome in crude idling, stalling, or merely poor engine running in general.
#2 – Poor Acceleration
The engine volition advance more slowly than normal. Ability to advance quickly and/or climb hills will exist lacking. While you may think this isn't that big of a deal, at that place may be times where you demand to flooring it to prevent an accident. When that power isn't there, there's non much you can practice.
#3 – Poor Gas Mileage
Equally already mentioned, one of the benefits of variable valve timing is an increment in fuel economy. Simply when the oil command valve is faulty, that do good disappears as intake and exhaust valves may open or close at the incorrect times. Over a period of time, you lot will annotation an increase in fuel consumption.
#iv – Cheque Engine Calorie-free
Invariably, the check engine light (CEL) will come on. A code volition be prepare past the onboard diagnostic system (OBD2). This code volition indicate whether the bug yous are noting are related to the OCV and its related VVT solenoid. DTC P0014 and DTC P0017 are two such codes related to VVT.
As with all CEL 'on' events the car may exist driven for short distances but must soon exist seen past a service technician for corrective activeness.
What Causes the VVT Solenoid and OCV to Go Bad?
The VVT solenoid is electrically powered as signaled by the ECU. Any fault in this system or circuitry can cause the VVT solenoid to fail to operate. Additionally the solenoid itself tin have an internal electric malfunction and begin to operate intermittently or non at all.
The OCV utilizes engine oil and requires clean oil to function normally. If oil and filter changes are not conducted periodically every bit your owner's manual dictates, sludge and/or varnishes (glutinous deposits) may build up in this valve.
This contamination may slow or cake its office. As well, though this valve is relatively unproblematic, an internal mechanical failure can cause information technology to fail to operate.
Many OCV installations include an inline oil screen ahead of the valve oil inlet. This screen can become partially or completely blocked past dirt or sludge. This blockage can hinder menses to the OCV and could crusade it to fail to operate.
Once more, clean oil is of import. Periodic engine oil and filter changes can help preclude this type of failure.
Tin You Drive With a Faulty Oil Control Valve?
You tin can drive with this valve malfunctioning, merely y'all shouldn't bulldoze besides far. Getting to your neighborhood repair store or dealer as soon as possible is strongly recommended.
The reason why is that the OCV or oil screen may exist partially or completely blocked. If this happens, lubrication to the cam sprockets and bondage will slow or cease. This can lead to rapid cam sprocket and chain habiliment and then failure.
The resulting damage could exist quite costly to repair.
VVT Solenoid Replacement Toll
VVT solenoid replacement will involve possibly a diagnostic fee, and so labor and the price of the parts equally follows:
If your mechanic charges a diagnostic fee, it could range from $65 to $100. Average parts price will probable exist somewhere between $50 and $250. Labor for the VVT replacement could range from $75 to $200.
All together, you can wait to pay somewhere in the range of $210 to $550 for the entire chore.
Prove of contamination and sludge in the oil control valve or filter could require boosted work. This would consist of flushing the engine lubrication system and replacing the engine oil and filter. Boosted estimated cost for this work plus oil and a filter would be $125.
Source: https://cartreatments.com/bad-oil-control-valve-symptoms/
Posted by: smithtenintion99.blogspot.com
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