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How to check the valves - 2000 Daewoo Leganza

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Compression tester with spark plug hole adapter spin motor 8 times per cyilinder watch the gauge see if it leaks down and write down the pressure per cyilinder any more then 10 psi diff between cylinder you got a bad valve

Posted on May 05, 2010


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Valve clearance

Valve clearance Google search your year make and model valve clearance. Check the attached links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
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Aug 10, 2016 | Cars & Trucks

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What is an IAC Valve

Google is your friend in such questions.

  • Idle air control actuator - Wikipedia, the free encyclopedia An idle air control actuator or idle air control valve (IAC actuator/valve) ... Idle air control actuator; MAP sensor; Mass flow sensor; Oxygen sensor; Starter motor;
  • how to tell if your iac valve is going bad - YouTube
    • BY TIMMY102345
    • 6 MIN
    2009-09-07 · Video embedded · how to tell if your iac valve is going bad timmy102345. ... #372 Better repair method Toyota Camry Idle Air Control Valve - ...
  • 4 Ways to Check an Idle Air Control Valve - wikiHow
    2015-12-11 · How to Check an Idle Air Control Valve. ... Again, an idle air control valve can have an issue or fault without triggering a check engine light. 2.

  • There are also videos in this link. How to check and fix.

  • What is an IAC Valve Bing video

    May 12, 2016 | 1992 Toyota Paseo

    1 Answer

    How do i fix p1130 AND P 1440 code on my 2000 Nissan maxima? It takes about 5-6 minutes to crank up.

    P1130 Swirl Control Valve Circuit Malfunction - With Automatic Transmission Possible Causes
    • Check for air leaks in the Air Induction system (e.g., in the intake manifold)
    • Check for leaks or looseness in hoses and tubes between the intake manifold, vacuum tank and swirl control valve actuator
    • Check for leaks or looseness in the hoses between the air cleaner assembly and the swirl control valve vacuum check valve
    • Crankshaft position sensor (REF) signal problem
    • MAF sensor has failed (it may be dirty or contaminated)
    • One-way check valve has failed
    • Swirl control valve actuator has failed (it may be damaged or sticking)
    • Swirl control valve control connector is damaged (check pins for damage)
    • Swirl control valve circuit is open, shorted to ground or shorted to voltage
    • Swirl control valve has failed
    • PCM has failed
    • Throttle position sensor has failed
    • Vacuum tank has failed

    P1440...EVAP Control System (Small Leak)
    Check your fuel cap & reset code,

    Good luck, hope this helps,,,

    Jul 15, 2011 | 2000 Nissan Maxima

    1 Answer

    Chevrolet Model 2001 Code 1416

    Removal Procedure

    Caution: Allow the engine to cool before servicing the secondary air injection AIR system in order to reduce the chance of severe burns.
    1. Remove the clamp from the check valve.
    2. Disconnect the AIR hose from the check valve.
    3. Remove the check valve from the left side AIR pipe.
    4. Remove the left AIR pipe from the exhaust manifold.
    5. Before replacing a check valve, test the valve for proper operation.
    5.1. Install a vacuum pump to the nipple side of the check valve, AIR pump side.

    5.2. Pump the vacuum pump to 10 inches Hg and observe the gauge.

    5.3. Replace the check valve if the vacuum bleeds down to zero within 5 seconds.

    Installation Procedure

    Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

    1.Install the check valve onto the AIR pipe.
    Tighten the check valve to the AIR pipe to 23 N·m (17 lb ft).
    2.Connect the AIR pipe to the exhaust manifold.
    Tighten the AIR pipe to the exhaust manifold to 20 N·m (15 lb ft).
    3. Install the AIR hose to the check valve.
    4. Install the check valve clamp.

    Jun 27, 2011 | 2001 Chevrolet Silverado

    1 Answer


    Shift Solenoid B Control Circuit High

    Areas to check:
    • Short in shift solenoid valve No. 2 circuit
    • Shift solenoid valve No. 2
    • ECM

    • Check the shift solenoid valve No. 2 when DTC P0976 and P0977 is output.
    • Check harness and connector between ECM and shift solenoid valve No. 1 or No. 2.
    To check the Shift Solenoid Valve No. 2:
    1. Jack up the vehicle.
    2. Remove the oil pan.
    3. Remove the shift solenoid valve No. 1 or No. 2.
    1. Measure the resistance between the solenoid connector terminal and the body ground. Standard: 11 - 15 W at 20°C (68°F)
    2. Connect the battery positive lead to the solenoid connector terminal and the battery negative lead to the solenoid body ground. Standard: Solenoid operation noise is produced. If not, Replace solenoid valve. If the Solenoid operation noise is produced, Check and replace the ECM.

    Mar 03, 2011 | 2007 Toyota Corolla

    1 Answer

    When i turn on the ac the idle goes low and the the car vibrates. When i turn off the ac the car stop vibrating.


    The Idle Air Control (IAC) valve controls the amount of air that bypasses the throttle valve, which controls the engine idle speed. The IAC valve consists of windings, an armature, a return spring, and a rotary slide. The engine control module (ECM) pulses the voltage to the winding, the opposing forces on the armature by the return spring cause it to maintain a fixed position, adjusting the amount of bypass air to maintain the correct idle speed.

    Removal & Installation

    1. Turn the ignition switch to the OFF position.
    2. Disconnect the idle air control valve harness electrical connector.
    3. Using a suitable tool, remove idle air control valve.
    4. Installation is in reverse order of removal.


    Checking Idle Air Control Valve (IAC) Triggering

    1. Check IAC valve is electrically OK.
    2. Slide up boot on the IAC valve connector.

    0900c152801c00a1.jpg enlarge_icon.gifenlarge_tooltip.gif

    Fig. IAC Connector

    1. Use scan tool 'Output Diagnostic Test Mode' function 03 to trigger the IAC valve - N71.
    2. Connect VAG 1527B voltage tester, or equivalent, between terminal 1 and engine ground (GND). Voltage tester must flash.
    3. Connect VAG 1527B voltage tester, or equivalent, between terminal 2 and battery positive voltage (B+). Voltage tester must light up.
    4. If specified results are not obtained:
      1. Connect VAG 1598/19 test box, or equivalent, to ECM harness connector.
      2. Check the wiring between harness and connector terminal 1 (in engine compartment) to test box socket D11 . Then check the wiring between harness connector terminal 2 and test box socket D9 using wiring diagram. Repair as necessary.
      3. If the wiring is okay, but triggering still does not occur, replace the ECM.
      4. If the triggering signal and the wiring are okay and the valve does not react, replace the IAC valve.

    Checking Mechanical Function
    1. Remove the idle air control (IAC) valve.
    2. Visually check the surface of the rotary slide (arrow) for signs of wear.

    0900c152801c00a2.jpg enlarge_icon.gifenlarge_tooltip.gif

    Fig. Showing the IAC Valve

    WARNING Do NOT check for ease of movement by prying on the rotary slide with a screwdriver or other tools that could cause scratching or other damage.

    1. Reconnect the IAC valve, while still removed, to the harness connector.
    2. Use scan tool 'Output Diagnostic Test Mode' function 03 to trigger IAC valve - N71.
    3. Check whether rotary slide moves freely from stop to stop.
    4. If there are signs of scoring, or if the rotary slide does not move freely in both directions, replace the IAC valve.
    5. If the IAC valve does not respond (not triggered) during the Output Diagnostic Test Mode, check triggering.

    Resistance Test
    1. Remove the idle air control valve harness connector.
    2. Use a suitable Digital Multimeter (DMM) to measure the resistance between the 2 terminals of the idle air control valve.
    3. The correct measurement should be 7-11 ohms. If not, replace the idle air control valve.

    NOTE At room temperature, the resistance value will be lower. The resistance value will be higher if the Idle Air Control (IAC) valve is measured at under-hood operating temperatures.
    1. Reconnect the idle air control valve harness connector.
    2. The idle air control valve should hum and vibrate slightly when the ignition is turned 'ON'. If not, the ECM or harness may be defective.

    Testing with VAG1551:
    1. Remove the idle air control valve harness connector.
    2. Connect the VAG 15278 LED tester to terminals 1 and 2 of the harness connector using the jumpers from VW 1594 adaptor kit.
    3. Turn ignition ON, perform steps from output DTM (Diagnostic Test Mode) to activate the IAC valve (N71) LED tester must blink.
    4. If tester does not blink, check wiring using VAG 1598 pin out box, electrical checks, step 26. Repair as necessary.
    5. If wiring is okay, replace the ECM.
    6. If LED tester blinks but the IAC valve does not operate, replace the IAC valve.

    Feb 15, 2011 | 2000 Volkswagen Jetta TDI

    1 Answer

    P0401 egr flow all senors,ports working properly at shop with ase

    check ur egr valve -there are 3 parts to the egr --the dpfe[differential pressure feedback egr ]sensor//egr valve//actuator solenoid--++biggest problem with the egr valve is that it gets carboned up and the valve is stuck remove and clean the valve and tube with a carb cleaner and check valve for movement if faulty replace also check vacuum line and vacuum to egr unit

    Feb 14, 2010 | 2001 Mitsubishi Eclipse

    1 Answer

    All of a sudden, my 2004 Ford Taurus heater control doesn't work. Hot air ALWAYS comes out, no matter where the temp control is set. Even if set in AC mode the air is VERY HOT! Help!

    The valve (called the heater tap) which controls the hot water flow works from engine vacuum. The climate control unit turns vacuum on to close the valve and turns vacuum off to open it, if the vacuum tubing or vacuum service valve has failed, the tap will be open allowing hot water to flow. The same result applies if the heater valve itself has failed (which they do --regularly) Trace the water hoses from the enginebay firewall under the hood and you should find the valve. Check for cavuum at the valve with the climate control set to its coldest setting. If you have vacuum at the valve, replace the valve. No vacuum points to the loss of vacuum source or a faulty vacuum service valve with will be electrically operated from the climate control. Trace the vacuum hose from the heater valve back to the vacuum service valve and check if the valve has vacuum supplied to it. No vacuum means a vacuum hose has blocked, has a hole in it or has been removed from the manifold. If the electrical valve has vacuum, check for power. If power is present but still no vacuum at the heater tap, replace the service valve. If power missing, check fuses. If both wires to the valve show power present, have the climate controll unit checked by a professional..

    Oct 31, 2009 | Ford Taurus Cars & Trucks

    1 Answer

    How do i adjust the valves in a ford 1997tarus with a 3.0 ohv

    Valve Stem to Guide Clearance · Intake
    0.026-0.071 mm (0.001-0.0028 in) · Exhaust
    0.038-0.083 mm (0.0015-0.0033 in) Valve Clearance
    1. With No. 1 piston (6108) on top dead center (TDC) at the end of compression stroke (Position No. 1 in the illustration), check the following valves:
      Position 1
      No. 1 exhaust valve (6505) No. 1 intake valve (6507).
      No. 3 exhaust valve No. 2 intake valve.
      No. 6 exhaust valve No. 4 intake valve.
    1. Rotate crankshaft (6303) 360 degrees to position No. 2 and check the following valves:
      Position 2
      No. 2 exhaust valve No. 3 intake valve.
      No. 4 exhaust valve No. 5 intake valve.
      No. 5 exhaust valve No. 6 intake valve. 4cb038f.gif

    Oct 19, 2009 | 1997 Ford Taurus

    1 Answer

    2003 Ford Ranger 2.3 Diagram

     rough-idling engine can signal a number of positive crankcase ventilation (PCV) valve problems, such as a clogged valve or a plugged hose. But before beginning the functional checks, double check the PCV valve part number to make certain the correct valve is installed. If the correct valve is being used, continue by disconnecting the PCV valve from the valve cover, intake manifold, or hose. Start the engine and let it run at idle. If the PCV valve is not clogged, a hissing is heard as air passes through the valve. Place a finger over the end of the valve to check for vacuum.


    With the engine at idle, vacuum should be felt at the PCV valve. 


    Jan 19, 2009 | 2003 Ford Ranger Regular Cab

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