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repair rough idle in gmc envoy

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HONDA Accord V6, Odyssey, Pilot Idle Vibration or Harsh Shifting Repair Manual

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SYMPTOM There is a vibration at idle or harsh engagement when shifting the transmission between between Park, Drive, and Reverse. PROBABLE CAUSE The front hydraulic engine mount may have deteriorated and torn. PARTS INFORMATION Front Engine Mount Assembly: 1998-02 Accord V6 – P/N 50810-S87-A82, H/C 7981657 1999-04 Odyssey – P/N 50800-S0X-A04, H/C 7978927 2003-05 Pilot – P/N 50800-S3V-A82, H/C 7984560 WARRANTY CLAIM INFORMATION In warranty: The normal warranty applies. Failed Part: P/N 50810-S87-A81 H/C 5438593 Defect Code: 01102 Symptom Code: 04501 Skill Level: Repair Technician Out of warranty: Any repair performed after warranty expiration may be eligible for goodwill consideration by the District Parts and Service Manager or your Zone Office. You must request consideration, and get a decision, before starting work. DIAGNOSIS 1. Bring the engine up to operating temperature, and fully apply the parking brake. 2. Have an assistant view the top of the front engine mount while standing to the side of the vehicle. Shift the transmission to Drive. With your foot firmly on the brake pedal, quickly depress the accelerator pedal and release it. Your assistant should look for contact between the top of the engine mount and the bottom of the front engine mount bracket, and listen for noise from that area. REPAIR PROCEDURE 1. Drive the vehicle onto a lift, but do not raise it. 2. Odyssey – Remove the intake manifold cover and the front ignition coil cover: •See page 9-4 of the 1999-04 Odyssey Service Manual. •Online, enter keyword INTAKE , and select Intake Manifold Removal and Installation from the list. 3. Odyssey – Remove the radiator cover: •See page 10-16 of the 1999-04 Odyssey Service Manual. •Online, enter keyword RADIATOR , and select Radiator and Fan Replacement from the list

2005-2006 (LX) Chrysler 300/ Magnum/ Charger/ Pacifica Multiple Cylinder Misfire Or Rough Idle Repair Manual

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REPAIR PROCEDURE: VALVE ROTATION: 1. Relieve the fuel pressure. Refer to the detailed service information available in TechCONNECTunder: Service Info>14-Fuel System>Fuel Delivery >Standard Procedure>Fuel System Pressure Release Procedure. 2. Remove upper intake manifold. Refer to the detailed service information available in TechCONNECTunder: Service Info >9-Engine>Manifolds>Intake Manifold> Removal. 3. Remove cylinder head cover(s). Refer to the detailed service information available in TechCONNECTunder: Service Info >9-Engine>Cylinder Head>Cylinder Head Cover(s) >Removal. 4. Remove rocker arm and shaft assembly. Refer to the detailed service information available in TechCONNECT under: Service Info >9-Engine>Cylinder Head> Rocker Arm/Adjuster Assembly >Removal). 5. Clean and mark the tip of each exhaust valve stem at the 12 O’clock position witha paint marker. The paint mark will be used later to assist with determining the amount of valve rotation. 6. Remove the sparkplugs. 7. Rotate the crankshaft clockwise, until the number 1 piston is at Top Dead Center (TDC) on the compression stroke. 8. Install the compression tester sparkplug adapter in cylinder#1 sparkplug hole. With air hose attached to sparkplug adapter, apply 620.5 to 689 kPa (90 to 100 psi) air pressure. This is to hold valves into place while servicing components. 9. Using Tool MD 998772A (1) with adapter 6527 (4) or equivalent, slightly compress the exhaust valve spring to release tension against the valve and valve spring retainer ( Fig. 1 ). 10. Remove the valve spring retainer locks and discard the locks. NOTE: It is important that the valve rotation section of this repair procedure be performed.

Honda Idle Fluctuation and/or the MIL Is On With DTC P1129 and/ or P0505 Repair Manual

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DIAGNOSIS 1. Start the engine, and let it idle until it warms up. Does the idle fluctuate, or is there a customer complaint of an intermittent idle fluctuation? Yes – Odyssey : Go to REPAIR PROCEDURE A. Pilot : Go to REPAIR PROCEDURE B. No – Go to step 2. 2. Connect the HDS to the vehicle’s DLC, and check for DTCs. Is DTC P1129 or P0505 stored? Yes – Go to REPAIR PROCEDURE B. No – Continue with normal troubleshooting. REPAIR PROCEDURE A 1. Connect the HDS to the vehicle’s DLC. 2. Start the engine, and turn on the HDS. 3. When prompted, enter the VIN and the odometer reading 4. From the System Selection Menu screen, select PGM-FI . 5. From the Mode Menu, select DATA LIST . 6. Scroll down the list to PSP SWITCH . Watch the reading in the Value column. 7. Check for a broken power steering pressure switch wire by wiggling the P/S pressure switch wire harness at the switch while you check the Value column reading. •If the reading changes between on and off when you wiggle the harness, go to step 8. •If the reading does not change between on and off when you wiggle the harness, go to REPAIR PROCEDURE B. 8. Raise the vehicle on a lift, and remove the right front wheel to access the power steering pressure switch. 9. Disconnect the connector from the switch, and release the harness clip from the body. NOTE: You may need to disconnect the Secondary HO2S connector to free the end of the harness from the body. 10. Lower the vehicle, and pull the harness up for easier access to make the repair. 11. Remove the rubber seal from the connector, and remove the terminals from the connector noting the GRN wire and BLK wire locations. 12. Remove the tape from the corrugated tube and the wires up to the harness clip; mark the wires at the end of the corrugated tube

HONDA CR-V Moan or Groan From the Rear Differential REPAIR PROCEDURE

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REPAIR PROCEDURE: 2002-04 MODELS 1. Replace the rear differential fluid: •Refer to page 15-13 of the 2002-04 CR-V Service Manual , or •Online, enter keywords REAR DIFF, and select Rear Differential Fluid Inspection and Replacement (4WD) from the list. 2. Raise the vehicle on a lift until all four wheels are completely off the ground and can rotate freely. 3. Start the engine, and let it idle until the radiator fan cycles on and off twice. 4. Burnish the rear differential clutches: Automatic transmission models – •Set the parking brake, and shift the transmission to D. Let the engine idle for 5 minutes. •With the shift lever in D, release the parking brake, keep the wheel speed at 10 mph, and let all four wheels rotate freely for 5 minutes. •Apply the brakes to stop the wheels, repeat the bulleted steps one more time, then go to step 5. Manual transmission models – •With the engine idling and the parking brake released, shift the transmission into 1st, release the clutch, and let the wheels rotate for 5 minutes. •Disengage the clutch, and apply the brakes to stop the wheels. Shift the transmission into reverse, release the clutch, and let the wheels rotate for 5 minutes. •Shift the transmission into neutral, then apply the brakes to stop the wheels. •Repeat the bulleted steps one more time, then go to step 5. 5. Shift the transmission to P (A/T) or neutral (M/T), and turn off the engine. 6. Let the rear differential cool for 10 minutes

2000 Pontiac Bonneville V6-3.8L VIN K – A/T 4T65E Harsh Shifts/Shudders/Slips Repair Manual

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Line Pressure Check Procedure Tools Required Important: Before performing a line pressure check, verify that the pressure control (PC) solenoid valve is receiving the correct electrical signal from the PCM. Caution: Keep the brakes applied at all times in order to prevent unexpected vehicle motion. Personal injury may result it the vehicle moves unexpectedly. J 21867Universal Pressure Gauge Set 1. Install a Scan Tool. 2. Start the engine and set the parking brake. 3. Check for a stored Diagnostic Trouble Code (DTC). 4. Repair the vehicle, if necessary. 5. Check the fluid level. Refer to the Transmission Fluid Checking Procedure. 6. Check the manual linkage for proper adjustment. 7. Turn the engine OFF. Remove the oil pressure test hole plug and install the J 21867. 8. Put the gear selector in PARK range and set the parking brake. 9. Start the engine and allow the engine to warm up at idle Notice: Total test running time should not be longer than two minutes, or else transmission damage could occur. Notice: Refer to Fastener Notice in Cautions and Notices. Parts Information 10. Access the PC solenoid valve control test on the Scan Tool. Zoom Sized for Print 11. Increase the PC solenoid as shown actual current from 0.0 to 1.0 amps in 0.1 amp increments. Allow the pressure to stabilize for five seconds after each pressure change. Read the corresponding line pressure on the J 21867. 12. Refer to the Line Pressure specification table. Compare the data to the table. 13. If pressure readings differ greatly from the table, refer to Incorrect Line Pressure. 14. Remove the J 21867. 15. Apply sealant, P/N 12345382 (in Canada, P/N 10953489), to the oil pressure test hole plug. 16. Install the oil pressure test hole plug. Tighten Tighten the oil pressure test hole plug to 12 N.m (106 lb in).