how to adjust cold idle setting on 99 pontiac grand prix gtp


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2003 Honda PILOT Idle Control System Malfunction

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Filed Under (Honda) by admin on 21-12-2010

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NOTE: If DTC P1519 is stored at same time as DTC P0505, troubleshoot DTC P1519 first, then recheck for DTC P0505. 1. Start the engine. Hold the engine at 3,000 rpm with no load (in Park or neutral) until the radiator fan comes on. 2. Check the engine speed at idle with no-load conditions: headlights, blower fan, rear window defogger, radiator fan, and air conditioner off. Is the engine running at 730+/-50 rpm? YES – Intermittent failure, system is OK at this time.? NO – If the idle speed is less than 680 rpm, go to step 3; if it’s 780 rpm or higher, go to step 4. 3. Disconnect the idle air control (IAC) valve 3P connector. Does the engine speed increase or fluctuate? YES – Adjust the idle speed. If the idle will not adjust properly, clean the passage in the throttle body, and then adjust the idle.? NO – Replace the IAC valve.? 4. Turn the ignition switch OFF. 5. Remove the intake air duct from the throttle body. 6. Start the engine and let it idle. 7. Put your finger on the lower port (A) in the throttle body. Does the engine speed drop below 780 rpm? YES – Adjust the idle speed. If the idle will not adjust properly, replace the IAC valve, and then adjust the idle.? NO – With the throttle valve completely closed, check for vacuum leaks, and repair as necessary.?

1997 Dodge RAM 3500 Idle Speed Adjustments

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Filed Under (Dodge) by admin on 31-10-2010

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The high-speed idle screw is factory sealed and cannot be adjusted. Low-speed idle can be adjusted. 1. Use an optical tachometer such as Snap-on No. MT139 or MTE (Cummins tool division) No. 3377462 to read the engine RPM. 2. Bring the engine to normal operating temperature. 3. Adjust the low idle speed at the low idle speed screw. The screw and locknut are located at the rear of the fuel injection pump. 4. Loosen the idle screw lock nut. Adjust idle screw to obtain specified RPM. LOW IDLE SPEED With automatic transmission: 750-800 RPM with transmission in drive and air conditioning on. With manual transmission: * 780 RPM with transmission in neutral and air conditioning on. * With engine at operating temperature. HIGH IDLE SPEED Do not attempt to adjust high idle speed. High idle speed adjustment screw is factory sealed. Breaking seal will void injection pump warranty 5. Tighten the locknut after adjustment.

2003 PILOT – DTC Troubleshooting: Idle Control System Malfunction

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Filed Under (Honda) by admin on 21-05-2010

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DTC P0505: Idle Control System Malfunction NOTE: If DTC P1519 is stored at same time as DTC P0505, troubleshoot DTC P1519 first, then recheck for DTC P0505.1.Start the engine. Hold the engine at 3,000 rpm with no load (in Park or neutral) until the radiator fan comes on.
2.Check the engine speed at idle with no-load conditions: headlights, blower fan, rear window defogger, radiator fan, and air conditioner off.Is the engine running at 730+/-50 rpm? YES – Intermittent failure, system is OK at this time. NO – If the idle speed is less than 680 rpm, go to step 3; if it’s 780 rpm or higher, go to step 4. 3.Disconnect the idle air control (IAC) valve 3P connector.
Does the engine speed increase or fluctuate? YES – Adjust the idle speed. If the idle will not adjust properly, clean the passage in the throttle body, and then adjust the idle.NO – Replace the IAC valve.

1995 Mercedes Benz E 300 Testing, Adjusting Idle Speed

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Filed Under (Mercedes-Benz) by admin on 14-08-2010

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A Engine 605.911 B Engine 606.910 Connect digital tester (001), TDC pulse generator (021). Check accelerator control for ease of movement. Check Idle speed stop at Bowden cable (32); the dished washer (29/7) must be resting free of tension against the compression spring (29/8). If necessary, adjust Bowden cable from inside car. Warm engine up to coolant temperature of 60 – 80°C . Engine 605.911 with pneumatic idle speed increase (PLA) Check idle speed; adjust if necessary by turning the vacuum unit (12/3). To do this, slacken lock nut (arrow). Refer to table for test data. Engine 606.910 with electronic Idle speed control (ELR) Unplug 2-pin coupling of ELR actuator (22). Check idle speed; adjust if necessary. To do this, slacken lock nut (arrow) and turn adjusting bolt (ring wrench). Refer to table for test data. To the left: higher engine speed To the right: lower engine speed All models Check smooth engine running. Operate service brake. Move selector lever into drive position. Switch on AC compressor. Turn power steering to full lock. Engine must continue to run smoothly when this is done. Test and adjustment data

2000 Pontiac Grand Prix GTP Trouble Shooting – Basic Procedures

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Filed Under (Pontiac) by admin on 06-10-2010

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CONDITION & POSSIBLE CAUSE CORRECTION Hard Starting Binding carburetor linkage Eliminate binding Binding choke linkage Eliminate binding Binding choke piston Eliminate binding Restricted choke vacuum Check vacuum lines for blockage Worn or dirty needle valve and seat Clean carburetor, see ENGINE PERFORMANCE Float sticking Readjust or replace float see the ENGINE PERFORMANCE section Incorrect choke adjustment Reset choke adjustment see ENGINE PERFORMANCE Defective coil Replace coil Improper spark plug gap Regap spark plugs Incorrect ignition timing Reset ignition timing see ENGINE PERFORMANCE Detonation Over-advanced ignition timing Reset ignition timing see ENGINE PERFORMANCE Defective spark plugs Replace spark plugs Fuel lines clogged Clean fuel lines EGR system malfunction Check and repair EGR system PCV system malfunction Repair PCV system Vacuum leaks Check and repair vacuum system Loose fan belts Tighten or replace fan belts, see ENGINE PERFORMANCE Restricted airflow Remove restriction Vacuum advance malfunction Check distributor operation Dieseling Binding carburetor linkage Eliminate binding Binding throttle linkage Eliminate blinding Binding choke linkage or fast idle cam Eliminate binding Defective idle solenoid Replace idle solenoid see ENGINE PERFORMANCE Improper base idle speed Reset idle speed, see see ENGINE PERFORMANCE Incorrect ignition timing Reset ignition timing see ENGINE PERFORMANCE Incorrect idle mixture setting Reset idle mixture, see ENGINE PERFORMANCE Faulty Acceleration Incorrect ignition timing Reset ignition timing see ENGINE PERFORMANCE Engine cold and choke too lean Adjust choke and allow engine to warm-up Defective spark plugs Replace spark plugs Defective coil Replace coil