Intake manifold vacuum solenoid
We have an issue with intake manifold vacuum solenoid. We replaced the part but in doing so the vacuum line that connects to the bottom came undone. We have the other one connected to the center top of intake. We cannot figure out where the other line connects to. Cel codes are p2004 thru p2008
My car has 120000 miles.
My car has an automatic transmission.
Experienced mechanics share their insights in answering this question :
Hi there. The other end of the vacuum line attaches to a male fitting on the intake manifold runner control. However, since we can’t attach photos showing you the location specifically, and without being there to show you in person, it’s impossible for us to accurately describe where it needs to go. There are two things you can do here. First, search for video on YouTube.com on how to replace the intake manifold vacuum solenoid on a 2.0 L Ford Focus 2006; so you can see where the two vacuum lines attach. Second, purchase a service and repair manual for your vehicle, which will show you a detailed schematic. The other option is to have one of our mobile mechanics come to your location and complete an intake manifold runner control replacement.
How to Identify and Fix Common car Problems ?
Our sources include academic articles, blog posts, and personal essays from experienced mechanics :
Manifold vacuum is an effect of a piston`s movement on the induction stroke and the choked flow through a throttle in the intake manifold of an engine. It is a measure of the amount of restriction of airflow through the engine, and hence of the unused power capacity in the engine.
Manifold vacuum is the partial vacuum that exists inside the intake manifold of a naturally aspirated Otto or two-stroke cycle engine. It is created by the movement of the pistons (specifically during the intake or induction strokes) and maintained by the restricted flow of air past a throttle plate or plates.
The Intake Manifold Runner Control (IMRC) is an electrically actuated system consisting of a motorized actuator with an attaching linkage for each housing on each bank. The linkage attaches to the housing butterfly plate levers. Each IMRC housing is an aluminum casting with two intake air passages for each cylinder.
Common signs include difficulty starting the engine, the Check Engine Light coming on, engine misfires, and a decrease in power and acceleration.
Typically, a vacuum leak will cause situations like hard starting, rough idle, excessive fuel consumption, and engine codes. You might even be able to hear a leak – sometimes a whooshing or whistling sound can be heard with the engine running.
Start engine and run the engine until it reaches normal operating temperature. Note the vacuum gauge reading and any variations in the pointer movement at idle and 2000 RPM. If the vacuum reading is below 18 in Hg. at idle (at sea level – less if corrected for altitude), the engine is NOT developing sufficient vacuum.
Idle vacuum for most engines is about 18 to 22 in. -Hg, but some may produce only 15 to 17 inches at idle. (Remember what we said about experience.) If vacuum is steady and within these ranges, the engine and fuel and ignition systems are operating normally.
The sensor is typically located in the vacuum line from the vacuum pump to the brake booster. If vacuum levels fall or if the vacuum pressure sensor fails, your car can have an illuminated Check Engine Light and/or a hard brake pedal.
The manifold absolute pressure sensor (MAP sensor) works with intake air pressure to define proper air and fuel quantities required for the ignition cylinders. The MAP sensor measures the vacuum of the intake manifold, which fluctuates according to engine load, relative to the barometric pressure.
The Intake Manifold Actuator is mounted on an Intake Manifold that acts as a passage of air that is sucked into the cylinder of the engine.
Where is the Manifold Absolute Pressure Sensor Located? The MAP sensor is typically located on the intake manifold, either next to or on the throttle body itself. (On a forced-induction engine, the MAP sensor can be found on the intake tract before the turbo.
A second factor in intake manifold vacuum is engine RPM. A slow turning engine will produce less manifold vacuum than a fast turning engine. Intake manifold vacuum will be at its highest when the engine RPM is high and the throttle plate is closed.
A vacuum pump can increase an engine`s horsepower in addition to removing oil spatter. Gains of between 15 and 25 horsepower are feasible in a common street/strip performance engine combination thanks to an enhanced ring seal. Vacuum pumps remove pressure from the crankcase.
Starting with the engine at idle, slowly increase engine speed to 3,000 rpm. Engine vacuum should be equal to or higher than vacuum at curb idle. If vacuum decreases at higher rpm, an excessive amount of back pressure is probably present due to a restriction in the exhaust system.
Relevant Questions and Answers :
the most relevant questions and answers related to your specific issue
Oil is geting into intake manifold and into all intake vavles.
ANSWER : Hi there. That type of oil volume inside the intake manifold is typically a sure fire indication of a blown head gasket. It’s also quite possible that this has occurred for an extended period of time. There are a few things that you can do to verify that this is the head gasket. First, check the oil itself. If it is milky or foamy then it means the head gasket is damaged and coolant is leaking into the oil galleys. If the head gasket is not damaged, excessive oil inside the spark plug well could also be a damaged O-ring but can also be the result of a failing piston or worn valve guides. Either way, the only way to correctly inspect and diagnose this would be to tear down the motor, so you might want to consider whether you are wanting to complete repairs or purchase a newer vehicle.
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Roland, does the 2007 4.7 liter with the plastic intake manifold have coolant passing through to cool the manifold?
ANSWER : Hello. It does not appear that the intake manifold on that model has coolant passages, so it is unlikely that that is the cause of the issue.
I would still carefully examine the intake manifold for any signs of warping, however, as plastic manifolds are more susceptible to warping than aluminum ones.
If the compression test was performed on a cold engine, it may be possible that a cold engine helped seal the pressure. If it feels safe to do so, I would start the engine, warm it up to operating temperature, and then retest the cylinder compression. There are certain cases where the head gasket is blown or the cylinder heads are warped, however, only once the engine is warmed up and the metal expands. If you’d like a second opinion on the car, a certified expert from YourMechanic can come to your car’s location to inspect the overheating problem and diagnose the issue properly.
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Intake manifold vacuum solenoid
ANSWER : Hi there. The other end of the vacuum line attaches to a male fitting on the intake manifold runner control. However, since we can’t attach photos showing you the location specifically, and without being there to show you in person, it’s impossible for us to accurately describe where it needs to go. There are two things you can do here. First, search for video on YouTube.com on how to replace the intake manifold vacuum solenoid on a 2.0 L Ford Focus 2006; so you can see where the two vacuum lines attach. Second, purchase a service and repair manual for your vehicle, which will show you a detailed schematic. The other option is to have one of our mobile mechanics come to your location and complete an intake manifold runner control replacement.
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Code p0010 camshaft actuator comes up, and mis fires. Just replaced intake manifold and these weren’t issues before that.
ANSWER : Hi there. There are a few possibilities here. It is possible that you had a valve timing issue prior to working on the manifold. These engines have a ton of issues with the balance shaft and the valve timing as the chain wear. It is also possible that there are issues with the work that you did. I have seen with these manifolds, severe warping and cracking which will cause this to occur. I would start by checking the manifold for vacuum leaks. If there are none then next the wiring needs to be checked for any pinched wires. If that is all fine then I would install a scan tool to check the camshaft and crankshaft sensor readings. If they are off then the valve timing needs to be checked.
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I have coolant in my lower intake manifold after replacing the gasket in my upper manifold in my 1996 Chevrolet Suburban.
ANSWER : Hi there. If you have coolant in your lower manifold also then at the very minimum you need to blow it out with compressed air. I would recommend removing the lower manifold also to make sure that you get it completely clean. If you do not then you can cause some serious internal engine damage.
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Loud metallic clunk and stops cranking when trying to start after removing and reinstalling upper intake manifold,
ANSWER : Hi there. Check the fuel injectors and make sure that they are hooked up properly. A leaking fuel injector will cause fuel to flood the cylinder and hydro lock the piston making the engine stop cranking. Also, check for anything that could be missing. It is possible that during the removal and installation process of the intake may have had a nut or bolt go into a runner on the cylinder heads. When the intake valve opens, the object will enter the engine causing the engine to have a clunk sound as well. I recommend seeking out a professional, such as one from Your Mechanic, to help you if you are unable to locate the clunking source on your engine.
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Coolant leak from behind the intake manifold. 2000 Saturn SL
ANSWER : Hello – yes, this is one of the heater hoses, and a leak at that hose connection is the most likely source. I would recommend a heater hose replacement (for both heater and radiator hoses if they haven’t been changed) by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs.
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Intake manifold backfire when key switched to ON position
ANSWER : The problem sounds like you are getting a build up of fumes in the intake when the engine is off. The purge valve may be leaking fumes into the intake when the engine is off. The purge valve should not flow any fumes when the engine is off. Test the purge valve with engine off to see if it will hold vacuum or it leaks. Replace the valve if it leaks.
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