Oldsmobile Note: These Cams Use .000" Intake and Exhaust Valve Lash
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DTC P0341 Camshaft Position (CMP) Sensor Performance
1998 Chevrolet/Geo Malibu DTC P0341 Camshaft Position (CMP) Sensor Performance Circuit Description During cranking, the Ignition Control Module (ICM) monitors the 7X crankshaft position sensor signal. Once the ICM determines spark synchronization, 3X reference signals are sent to the PCM. The PCM will command all six injectors ON for one priming shot of fuel in all cylinders. After the priming, the injectors are left OFF for the next six fuel control reference signals (two crankshaft revolutions). This allow each cylinder a chance to use the fuel from the priming shot. During this waiting period, a cam pulse will have been received by the PCM. The PCM uses the Cam signal pulses to initiate sequential fuel injection. The PCM constantly monitors the number of pulses on the Cam signal circuit and compares the number of Cam pulses to the number of 24X reference pulses and the number of 3 X reference pulses being received. If the PCM receives an incorrect number of pulses on the Cam reference circuit, DTC P0341 will set and the PCM will initiate injector sequence without the Cam signal with a one in six chance that injector sequence is correct. The engine will continue to start and run normally, although the misfire diagnostic will be affected if a misfiring condition occurs. Conditions for Setting the DTC z The engine is running (3X reference pulses are being received). z CMP sensor reference pulse is not detected every engine cycle. Action Taken When the DTC Sets z The PCM will illuminate the malfunction indicator lamp (MIL) during the second consecuitive trip in which the diagnostic has been run and failed. -
Table of Contents Table of Contents
Table of Contents Table of Contents.......................................................................... 1 Terms and Conditions .................................................................. 5 Direct Sales and Value Added Dealers........................................................................... 5 Warranty ......................................................................................................................... 5 Repairs and Returns ........................................................................................................ 5 Pricing Policies ............................................................................................................... 5 Legal Disclaimer............................................................................................................. 6 Forward ......................................................................................... 7 3 A. Installing the TEC System .................................................... 9 A.1. How it All Works: The Two Pages You Need to Read ......................................... 9 A.2. Pre-Installation Checklist..................................................................................... 11 A.3. Mounting the Main Computer and DFU.............................................................. 12 A.4. Trigger Wheel and Sensor Installation................................................................. 14 A.4.a. Crankshaft Trigger Installation for 60(-2) Tooth Wheel............................... 14 A.4.b. Magnetic -
Technology Overview
VQ35HR•VQ25HR Engine Technology Overview V6 GASOLINE ENGINE Advanced technology takes the next generation of Nissan’s world-renowned VQ engine to new pinnacles of high-rev performance and environmental friendliness. Nissan’s latest six-cylinder V-type Major technologies engine inherits the high-performance DNA that has made Nissan’s VQ Taking the award-winning VQ series another step series famous. Taking the acclaimed toward the ultimate powertrain, Nissan’s next- VQ engine’s “smooth transition” generation VQ35HR & VQ25HR are thoroughly concept to higher revolutions than reengineered to boost the rev limit and deliver greater ever, this VQ is a powerful and agile power, while achieving exceptional fuel economy and new powerplant for Nissan’s front- clean emissions. engine, rear-wheel-drive vehicles. Higher revolution limit By greatly reducing friction, Nissan engineers achieved a smooth transition to the high-rev limit, New VQ Engine which has been boosted to a 7,500rpm redline. Advantages Lengthened connecting rods Smooth transition up to high-rev redline Lengthening the connecting rods by 7.6mm reduces Lengthened connecting rods, addition of a ladder piston sideforce on the cylinder walls. This reduces frame and other improvements greatly reduce friction for smoother piston action to support high- friction. The result is effortless throttle response rev performance. all the way to the 7500-rpm redline. New ladder frame Top level power performance in class The lower cylinder block that supports the crankshaft Improved intake and exhaust systems, raised uses a ladder-frame structure for increased stiffness. combustion efficiency, and other enhancements This suppresses vibration to minimize friction at high achieve class-leading power. -