CHANGE Ignition Coil FOR MERCURY MONTEREY 2004
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Filed Under (Honda) by admin on 03-01-2011
Spark Check for spark at secondary coil wire and each spark plug wire using a spark tester. If spark is not present, continue with following tests. Check spark plug wire resistance on suspect wires. Resistance should be less than 25,000 ohms. Ignition Coil Power Source 1. On Civic, remove distributor cap to check power source directly at coil. On all models, disconnect ignition coil primary leads. Turn ignition on. Using voltmeter, check voltage between ground and Black/Yellow wire terminal of ignition coil harness. 2. Battery voltage should be present. If battery voltage is not present, check for open in Black/Yellow wire between coil and ignition switch. Ignitor Power Source Turn ignition off. Disconnect harness connector at distributor. Turn ignition on. Using voltmeter, check for battery voltage between ground and Black/Yellow wire of harness. If voltage is not present, check for open in Black/Yellow wire between ignition coil and harness connector. If wire is okay, check ignition coil resistance (for internal short to ground). Ignitor Check Check TDC/CRANK/CYL sensor resistance values. See TACH PULSE SIGNAL . Check power sources. If no problems are found and spark is not present, replace ignitor. Ignition Coil Resistance (Accord & Prelude) 1. Remove primary and secondary leads from ignition coil. Using an ohmmeter, check resistance between primary terminals “A” and “C” (“A” and “B” for Prelude) of ignition coil. See Fig. 2 . Resistance should be .6-.8 ohm at room temperature. 2. On Accord, check resistance between terminals “B” and “D” of ignition coil (tachometer circuit). Resistance should be about 2090-2310 ohms at room temperature. 3. On all models, check secondary resistance between terminal “A” and secondary output terminal (coil tower). See IGNITION COIL RESISTANCE table. Check for continuity between terminals “A” and “B” (“A” and “C” for Prelude). Continuity should exist. If readings are not within specification, replace coil.
Filed Under (Subaru) by admin on 06-10-2010
rePaIr Procedure/InformatIon Step 1) Ignition Coil Inspection Check the tower portion of the ignition coil for carbon tracks (leakage). If leakage is more than 5mm long, the ignition coil and high tension cables should be replaced (see Figure 1). Figure 1 Example of leakage on ignition coil tower. Step 2) High Tension Cable Inspection Check the high tension cables for carbon tracks (leakage). If leakage is evident, the high ten- sion cables should be replaced and the ignition coil cleaned (see figure 2 and refer to Step 3). Figure 2 Leakage on cable. Step 3) Ignition Coil Cleaning Procedure (if carbon track is less than 5mm) • • • • note: Do not insert the high tension cables until the ignition coil is dry. If there is any evidence of carbon, clean the surface of the ignition coil using a clean, soft rag dampened with water. Permit the ignition coil to dry. Clean the same area of the ignition coil using a clean soft rag dampened with Isopropyl alcohol. Permit the ignition coil to dry.
Filed Under (Nissan) by admin on 16-01-2011
If an applied vehicle exhibits one or more of the following symptoms: • • • MIL “ON” with DTC P0340 (Camshaft Position Sensor) stored in Self Diagnosis results, Engine stumbles momentarily during cruise condition, Engine stops running at idle, The cause of this incident may be the ignition coils. A new resistor assembly (located inside the ignition coil tube) is available to repair the described symptoms, if they should occur. SERVICE PROCEDURE 1. Verify that the vehicle has one or more of the symptoms listed above in the Service Information. 2. Remove all four ignition coils. Refer to the appropriate 2002 Service Manual for removal procedure of the ignition coils (page EM-26 for Altima, page EM-106 for Sentra). 3. Install the new resistor assembly in all four ignition coil tubes as follows: A. Pull the rubber boot away from the ignition coil. Then, twist and pull the ignition coil tube from the ignition coil to separate them (see Figure 1). Rubber boot Tube Ignition coil Figure 1 TP010651 B. Remove the spring from the ignition coil tube and discard. Insert the new resistor assembly into the ignition coil tube exactly as shown in Figure 2 below. C. Assemble the ignition coil tube to the ignition coil. • Rotate the tube while pressing onto the coil. • A “pop” sound will be heard when the rubber boot is seated correctly to the ignition coil. • Ensure there are no gaps and bulges between the coil body and the rubber boot (see Figure 3).
Filed Under (Honda) by admin on 23-04-2010
Ignition Coil Test (Accord 2.3L & CR-V) 1. Turn ignition off. Remove distributor cap, rotor and leak cover. Remove primary leads from ignition coil. Using an ohmmeter, check primary resistance between ignition coil terminals “A+” and “B-”. See Fig. 12 . Resistance should be as specified. See IGNITION COIL RESISTANCE table. 2. Check secondary resistance between ignition coil terminal “A+” and secondary output terminal (ignition coil tower). See IGNITION COIL RESISTANCE table. If readings are not as specified, replace ignition coil.Ignition Control Module (ICM) Input Test (Accord 2.3L) 1. Turn ignition off. Remove distributor cap, rotor and leak cover. Disconnect wires from ICM. See Fig. 14 or Fig. 15 . Turn ignition on. Check for voltage between body ground and ICM Black/Yellow wire. If battery voltage exists, go to next step. If battery voltage does not exist, check for open in Black/Yellow wire between ignition switch and ICM. See WIRING DIAGRAMS article.
Filed Under (GM) by admin on 04-06-2010
Models: 2008-2009 Chevrolet Colorado, TrailBlazer 2008-2009 GMC Canyon, Envoy 2008-2009 HUMMER H3, H3T 2008-2009 Saab 9-7X All Equipped With Engine RPOs LLR, LLV, LL8 Please Refer to GMVIS Condition Some customers may comment that the malfunction indicator lamp (MIL) is illuminated. Some customers may also comment that the engine runs rough. The technician may find DTCs P0300, P0301, P0302, P0303, P0304, P0305, or P0306 set as current or in history, depending on which engine the vehicle is equipped with. Upon further examination, the technician may observe evidence of water intrusion into the spark plug recess area. Cause This condition may be caused by an engine being exposed to a large quantity of water, which may result in some of the water seeping down past the vented threads of an ignition coil bolt, then flowing through the vent opening that is located in the bottom of the related ignition coil bolt hole, and collecting in the spark plug recess area. Correction Important: DO NOT reprogram or replace the engine control module (ECM) for this condition. If evidence of water intrusion in the spark plug recess area/s is not observed, then refer to the appropriate DTC procedures in SI.