The scan tool should read between 100 and 500 RPM. If you guessed the crankshaft position sensor, then you would be correct. Think safety all of the time and take all necessary safety precautions (including using safety glasses).The one symptom that's gonna' be staring you right in the face is your GM pick up or van or SUV cranking but not starting.More specifically, you'll see one or all of the following symptoms when the crank sensor fails:The thing to remember about having a failed crank sensor, is that if you have spark or fuel injector pulses, the crank sensor is OK and not the cause of your No Start Condition.Check out the following links and comparison shop the original AC Delco (Delphi) crankshaft position sensor on your GM van (pick up or SUV):Not sure if the above crankshaft position sensor fits your particular GM vehicle?

This also means that this type of crank sensor creates an On/Off DC voltage signal that can be easily measured with a multimeter, an oscilloscope, and even an LED Light.

New crank, cam, rods, pistons, etc...I am awaiting a tune because it stalls. Double check eveything.

Anyways.

LS1/LS2 Engine Tech. It's not possible to do a simple resistance test of the crank sensor. Don't worry, once you click on the links and arrive on the site, they'll make sure it fits! If it doesn't, they'll find you the right one.The crankshaft position sensor, on your 4.8L, 5.3L, 6.0L GM vehicle, is a Hall-Effect three wire crankshaft position sensor. Why? I went to plug in the crankshaft sensor, but the connector on the harness doesn't match up to the sensor. Well, it's because this crank sensor is a Hall Effect type and these can not be ohmed (to find out if they're good or not).You'll need to lift the vehicle to gain access to the crank pulley. This is a very accurate and effective test and will help you to know if it's good or bad.Since this crankshaft position sensor test article covers quite a few GM years, makes and models, take a look at the ‘Applies To:’ box on the right and scroll with the ‘Next > >’ button to see all of the applications. How To Test The Crank Sensor (GM 4.3L, 5.0L, 5.7L) SUGGESTION 1: The crank sensor test I'm gonna' show you in this article, is one of the most accurate ways to test the crank sensor without an oscilloscope (and using only a multimeter) only if you turn …

within the Computer & Tuning forums, part of the LSx Technical Help Section category; I just COMPLETELY rebuilt my motor.

It runs just fine without it, you can unplug the it and the engine doesn't miss a beat, just turns on the SES. Crankshaft Position Sensor (P0335) ... have a bad sensor, or even pinched the wiring near the starter. Once that is done, you can compare the readings with manufacturer specifications.

The crankshaft position sensor, on your 4.8L, 5.3L, 6.0L GM vehicle, is a Hall-Effect three wire crankshaft position sensor. Could still be a bad sensor. Use jack stands to hold up the vehicle. A bad reading indicates that the crankshaft sensor isn't working right. If this is the case, in your particular case, the following tutorial may be of help:The following links will help you comparison for a new crankshaft position sensor: Step 2 - Wiring the Voltmeter. Your vehicle is equipped with a crankshaft position sensor. Below is a simple list of more specific symptoms that accompany a bad crank sensor:The most important thing to remember, is that if you get spark from any spark plug wire, the crank sensor is working and the test in this article won't help you. The sensor sends the rate to the engine computer, which then synchronizes the ignition timing and fuel injection accordingly. DO NOT trust the jack. Do I need a crank sensor relearn? Also, the info in this article is geared towards diagnosing and troubleshooting a You don't need any expensive tools to test the crank sensor on your 4.3L, 5.0L, 5.7L engine.The most common symptom of a bad crank sensor is a ‘cranks but does not start’ problem. Crank Sensor Test -No Spark No Start Tests (GM 4.8L, 5.3L, 6.0L)

This article will help you to troubleshoot and diagnose a bad crankshaft position sensor on your 4.3L, 5.0L and 5.7L Vortec equipped GM Pick Up or SUV.Since the 3-wire crankshaft position (CKP) sensor can not be tested by a multimeter resistance test (Ohms), I've written this article to show you how to do it with just a multimeter in Volts DC mode. This year I've switched engines to a 2006 LS2 out of a GTO. In this article, I'll show you how to test the crank sensor with a multimeter.Each one of the three wires that connect to it have a specific job to do. If the voltmeter is equipped with needle probes, the wires at the sensor connector need to be back probed. If the crank sensor fails, in your 4.8L, 5.3L or 6.0L GM vehicle, it's not gonna' start. This is a discussion on Do I need a crank sensor relearn? I thought the crank position sensor is only for misfire detection?

In a nutshell this is what happens when you turn the key and crank the engine:The most important thing to know, is that if the crank sensor goes bad, your 4.8L, 5.3L, 6.0L GM vehicle vehicle will ‘Crank but Not Start’.

You can find this tutorial in Spanish here: Cómo Probar El Sensor De La Posición Del Cigüeñal (P0336, P0337, P0338, P0339) (at: autotecnico-online.com). Important Suggestions.