- Plugged in new cam sensor 7.3 injector driver module manuals#
- Plugged in new cam sensor 7.3 injector driver module driver#
The other ring has only one notch, which causes the other hall effect switch to generate a single "sync-pulse" signal that the ECM uses to calculate rpm and ignition timing.Īnother variation of the combination sensor is the "fast start" system used on GM's 3800 engine. One ring has three notches which causes one of the hall effect switches to generate three crank position signals every revolution. There are two notched interrupter rings on the back of the harmonic balancer. GM calls it a combination sensor because the crank position sensor contains a pair of hall effect switches that generate two separate signals. Ford uses a similar setup on its 5.0L V8 with distributorless ignition.Īnother type of crankshaft position sensor GM uses is the "combination sensor" which you'll find mounted on the front of the 3.0L and 3300 V6. This enables the PCM to determine the correct firing sequence which it then uses to control both injector and ignition timing. The system also uses a separate cam position sensor in place of the original distributor to inform the PCM about valve timing. The crank position sensor provides an on-off signal to the Powertrain Control Module (PCM) that the computer uses to monitor engine rpm and crank position. This was first used on the early GM 3.8L V6 Buick Sequential Fuel Injection (SFI) engines (and turbos) with distributorless Computer Controlled Coil Ignition (C3I). One is a Hall effect crank position sensor that reads a notched metal "interrupter" ring on the back of the harmonic balancer. There are a variety of different types of crankshaft position sensors.
Plugged in new cam sensor 7.3 injector driver module driver#
If the computer senses enough of these, it will illuminate or flash the Check Engine or Service Engine Soon light to signal the driver he has a problem. On 1996 vehicles with Onboard Diagnostics II (OBD II), the crankshaft position sensor is also used to detect variations in crank speed caused by ignition misfire. It also does away timing adjustments (or misadjustments as the case may be). This eliminates ignition timing variations that can result from wear and backlash in the timing chain and distributor gear. These sensors serve essentially the same purpose as the ignition pickup and trigger wheel in an electronic distributor, the only difference being that the basic timing signal is read off the crankshaft or harmonic balancer instead of the distributor shaft.
Plugged in new cam sensor 7.3 injector driver module manuals#
Basics of Crankshaft & Camshaft Position SensorsĪuto Repair Library, Auto Parts, Accessories, Tools, Manuals & Books, Car BLOG, Links, Indexīasics of Crankshaft & Camshaft Position Sensors by Larry Carley copyright 2019 ĭistributorless ignition systems require a crankshaft position sensor (CKP), and sometimes also a camshaft position sensor (CMP).