99 ford explorer fuel pump replacement sohc vs ohv

NOTE: Your multimeter will not register a steady AC voltage.

When the engine is not cranking, you should see 0 Volts AC. Your multimeter should register an AC voltage between 0.5 to 1.2 Volts AC while the engine is cranking. The following links will help you comparison shop for the CKP sensor of known automotive brands (no knockoffs): When the CKP sensor can fails intermittently, the engine starts and runs most of time but now and then it won't. When the CKP sensor suffers a complete failure, the engine will crank but won't start. The sensor functions most of the time, but now and then it won't. In this case the sensor stops functioning. The crankshaft position sensor usually fails in one of two ways: You'll need a repair manual for them (or Google). TIP 5: This tutorial does not cover any remove and replace instruction for accessing or replacing the CKP sensor. So, if you're getting spark, even if in just one cylinder, the CKP sensor is good and this test will not help you. In other words, when the crankshaft position sensor goes bad, you'll get a no-spark no-start condition. Why? Well if even just one spark plug cable has spark, this tells you that the CKP sensor is OK. TIP 4: The first thing you should do, before testing the CKP sensor is checking for spark at all six spark plug wires (high tension cables). Do not trust the jack! Use safety glasses also. Use a jack stand to hold the car up in the air. TIP 3: You'll need to jack up the vehicle to gain access to the CKP sensor.

A low battery will cause the engine to crank slower than normal and you're not gonna' see a good CKP sensor signal result on your multimeter. This is important because you'll be measuring the CKP sensor's signal while the engine is cranking. TIP 2: The battery in your 4.0L Ford Explorer (Mercury Mountaineer) must be fully charged. TIP 1: The CKP sensor is located right behind the crankshaft pulley, since the CKP sensor's reluctor wheel is behind (and part of) the crankshaft pulley. More 4.0L Ford Explorer And Mercury Mountaineer Tutorials.ĪPPLIES TO: This tutorial applies to the following vehicles:.Testing The CKP Sensor Signal With A Multimeter.

99 ford explorer fuel pump replacement sohc vs ohv