Question about Vauxhall Cars & Trucks
Posted by Anonymous on
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Posted on Jan 02, 2017
p2004 (Intake Manifold Runner Control Stuck Open)You need to take a look at the IMRC actuators on the intake manifold. You can try using a screwdriver or other tool to move the actuators to see if one is stuck in the open position. Do not use your fingers to do this, because if one is open and decides to close it has a bit of force behind it and can injure you. If the IMRC is stuck open, it is usually due to deposits in the intake manifold. Repair involves removing the upper intake manifold and cleaning out any deposits in the IMRC plate area. I would try running some Techron Concentrate in 2 tanks of gas to see if it dissolves enough of the gunk on the plates to free up the stuck one. Certainly a lot cheaper than having to pull the intake manifold and cleaning the plates. Always run tier one gasoline like Shell or Chevron to reduce the buidup of deposits.
Posted on Dec 19, 2008
this a map sensor, probably just need the sensor replaced, it measurese intake vaccum and adjusts air/fuel mixture accordingly
Posted on Oct 07, 2009
Testimonial: "MANY THANKS TO HONDABOY 47. SPOT - ON. PROBLEM SOLVED!"
LOOKING IN CODE BOOK.POSSIBLE CAUSE TO YOUR PROBLEM THE IMRC COULD BE STUCK OPEN.OR THE IMRC ACTUATOR IS DAMAGED OR HAS FAILED.ALSO THE IMRC MONITOR SIGNAL CIRCUIT COULD BE SHORTED TO POWER GROUND OR SHORTED TO SIGNAL GROUND RETURN.
Posted on Oct 23, 2009
I assume it is a turbo diesel? Then:
Location of the sensor:
- in early cars is in the ECU, with vacuum pipe going from intake maniforld duct to the ECU
- later models on the air intake duct, with wiring going to the ECU.
The fault may often be caused by:
- air leaks in MAP sensor line to the ECU (early ones only) or any of the vacuum control line hoses. This normally due to perished/loose flexi pipes, etc).
- leaks in the air hoses going between turbo/engine/intercooler. Can be spotted by slight oil contamination at the point of leak.
Or it's variable vaine sticking (even intermittently) in the turbo due to contamination, preventing the turbo from performing according to the ECU demand, and hence being 'shut-off' by th ECU
So - check all vacum line for leaks, ensure turbo actuator is free to move, all air hoses are intact and secure, intercooler not leaking.
Posted on Jan 24, 2010
First, to read VW codes you will want to get yourself a $50 VAG tool. It will read all your systems, not just the ECU.
Electronic Power Control can go out for several reasons. Check your brake lights with the car running. Check you radiator fluid level. If the car is running bad, you could have bad spark plugs/ wires or ignition coil.
The traction control is tied into the ABS system and often causes problems here as well. Each wheel has a speed sensor and magnet wheel in the hub. You can check these for damage by removing the tires for access. The sensors come out by hand, and inside the hole they come out of is the place to check the magnets with a flash light. Apply a small amount of wheel bearing grease to the sensor.
The control unit goes out in these systems at an alarming rate. They can be easily removed, and repaired for under $200 at modulemaster.com
Since it is intermit, I suspect most likely a loose sensor, or electrical connector.
If your brakes feel squishy at all, bleed the brake lines of air and contaminants.
Posted on Feb 23, 2010
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