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How do i use a digital-830B multimeter?

I want to check for resistance on a 2 wire crankshaft position sensor what number do i reset the meter on and what the resistance numbers are can you send me pictures showing how to do this test? 2004 gmc envoy slt 4.2l

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Set the meter mode to the ohms sign ( omega sign) set the scale to position the decimal point if the resistance is to large for the standard setting
to know what you are reading you will need to get the numbers from a workshop manual so that you can compare what you have to what it should be
it the sensor is working you should get a reading but if it goes straight all 000000 then there is a dead short or if it reads what you have when you switch the meter on it will be an open circuit --broken wire --
the test procedure is in the workshop manual

Posted on Dec 17, 2016

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2000 dodge 1500 sudenly died won't start back. Got fuel pressure but it sparks then don't then sparks then don't


Intermittent ignition is usually caused by a weak crankshaft position sensor signal. Check for proper installation and inspect wiring and connector. Turn the key on and check the voltage on the third terminal. This should be 5 volts dc. Also check the other terminals as stated below.
TESTING

On the 2.5L engine, the Crankshaft Position (CMK) sensor is located near the outer edge of the flywheel (or starter ring gear). On other models it is fitted to the right side of the engine block.
The only test you can perform without a DRBII scan tool, or equivalent, is a basic check of the sensor only.
  1. Disconnect the sensor harness connector from the main wire harness connector.
  2. Place an ohmmeter across terminals 1 and 2 (see the illustration). The meter reading should be open (infinite resistance). If a low resistance is read, replace the camshaft position sensor.

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Aug 25, 2017 | Dodge Cars & Trucks

1 Answer

How do i check for resistance on a 2 wire crankshaft position sensor and a 3 wire cam sensor with a digital multimeter?


If you have a meter, select the amps reading and place each lead to each terminal. if you have a reading, its good, if you do not (open circuit), sensor bad.

Dec 16, 2016 | GMC Cars & Trucks

1 Answer

Testing neutral battery cable, crank and camshaft sensors for ground, wire connectivity, etc.?


Put it on the Ohms reading, lowest setting. Touch the leads from the negative side of the battery to the engine and also the body.. Should have less than 5 ohms. To test the positive side you have to go to the starter and battery. To test the sensors your meter has to be able to read hertz. Put the leads to the positive and signal return. Tap the end of the sensor with a piece of metal(screwdriver, wrench) rapidly. It it reads any numbers, it is good.

Sep 03, 2016 | 2002 Kia Optima

1 Answer

Was getting gas & spark & now no spark on any plugs


Crankshaft position sensor , possibly !
Crankshaft Position (CKP) Sensor
The crankshaft position (CKP) sensor is a three wire sensor based on the magneto resistive principle. A magneto resistive sensor uses two magnetic pickups between a permanent magnet. As an element such as a reluctor wheel passes the magnets the resulting change in the magnetic field is used by the sensor electronics to produce a digital output pulse. The PCM supplies a 12-volt, low reference, and signal circuit to the CKP sensor. The sensor returns a digital ON/OFF pulse 24 times per crankshaft revolution.
There are a lot of videos on youtube on testing crankshaft position sensors an Cam sensors !
There

Dec 18, 2015 | 2004 Chevrolet Tahoe

1 Answer

My mother has a 1993 Oldsmoblile Cutlass Cierra. It's a 3.3. She had a new engine put in it last year. Now her car died yesterday. She had to have it towed home so my brother could look at it. He got...


Check for spark. My guess would be the ignition module going out, but could also be the crank sensor. The module sits under the coils. Check all coils for spark. If any coil doesn't spark, you can try replacing just that coil, but the problem may still be the module underneath. If you have a meter, run a resistance check on each coil from the terminals to ground. If the same coil that doesn't fire aslo has a different resistance, replace that coil.
If you have a meter, check the AC voltage on each of the crank sensor wires shown as compared to ground or battery positive. If the AC voltages are different on the three wires, suspect the sensor is bad, but also check the tone ring on the pulley (Fig 2 below) for any damage.
Please see my tip at http://www.fixya.com/cars/r5821173-doesnt_car_start_gasoline_engines for how to check for spark. These are genericinstructions.
The 3.3L engine is the only one with the C 3 I system. REMOVAL and INSTALLATION C3I Module See Figure 1
  1. Disconnect the negative battery cable.
  2. Unplug the 14-way connector at the ignition module.

jturcotte_1656.gif
Fig. Fig. 1: Distributorless C 3 I coils and module system - 3.3L engine
  1. Tag and disconnect the spark plug wires at the coil assembly.
  2. Remove the nuts and washers securing the C 3 I module assembly to the bracket.
  3. Remove the 6 bolts attaching the coil assemblies to the ignition module.

To install:
  1. Install the coil assemblies to the ignition module and install the 6 attaching bolts.
  2. Install the nuts and washers attaching the assembly to the bracket.
  3. Connect the spark plug wires.
  4. Engage the 14-way connector to the module.
  5. Connect the negative battery cable, then reset the clock, radio and any other accessories.

Ignition Coil(s)
  1. Disconnect the negative battery cable.
  2. Tag and disconnect the spark plug wires.
  3. Remove ignition coil attaching bolts, then the ignition coil from the module.

To install:
  1. Install the coil(s) and attaching bolts.
  2. Connect the spark plug wires.
  3. Connect the negative battery cable, then reset the clock, radio and any other accessories.

Dual Crankshaft Sensor
See Figures 2, 3 and 4
  1. Disconnect battery negative cable.
  2. Remove serpentine belt from crankshaft pulley.
  3. Raise and safely support the vehicle.
  4. Remove right front tire and wheel assembly, then the inner access cover.
  5. Remove crankshaft harmonic balancer retaining bolt and crankshaft harmonic balancer.
jturcotte_1657.gif

Fig. Fig. 2: Harmonic balancer with interrupter rings on C 3 I system
  1. Unplug the electrical connector from the sensor and remove the crankshaft sensor from the vehicle.

To install:
  1. Loosely install the crankshaft sensor on the pedestal.
jturcotte_1658.gif

Fig. Fig. 3: Dual crankshaft sensor - C 3 I system
  1. Position the sensor with the pedestal attached on special tool J-37089.
  2. Position the tool on the crankshaft.
  3. Install the bolts to hold the pedestal to the block face. Tighten to 14-28 ft. lbs. (20-40 Nm).
  4. Tighten the pedestal pinch bolt to 30-35 inch lbs. (3-4 Nm).
  5. Remove special tool J-37089.
  6. Place special tool J-37089 on the harmonic balancer and turn. If any vane of the harmonic balancer touches the tool, replace the balancer assembly.

A clearance of 0.025 inch is required on either side of the interrupter ring. Be certain to obtain the correct clearance. Failure to do so will damage the sensor. A misadjusted sensor of bent interrupter ring could cause rubbing of the sensor, resulting in potential driveability problems, such as rough idle, poor performance, or a no start condition.
  1. Install the balancer on the crankshaft and install the crankshaft balancer bolt. Tighten to 200-239 ft. lbs. (270-325 Nm).
  2. Install the inner fender shield.
  3. Install the tire and wheel assembly. Tighten to 100 ft. lbs. (140 Nm).
  4. Lower the vehicle.
  5. Install the serpentine belt.
  6. Connect the negative battery cable, then reset the clock, radio and any other accessories.
jturcotte_1659.gif

Fig. Fig. 4: Distributorless C 3 I positioning tool J-37089 for installing dual crankshaft sensor.system - 3.3L engine

May 07, 2011 | 1990 Oldsmobile Cutlass Ciera

1 Answer

Can I reset the check engine lamp myself? I recently dropped the gas tank lid. It appears to be fine, but can a damaged gas tank lid cause issues like this? The most consistent issue is the inability...


Please don't forget to rate me.. this will help me



The Crankshaft Position (CKP) sensor monitors crankshaft position and speed. Your vehicle computer uses this information, along with data from other vehicle sensors, to maintain ignition timing. As a result, problems with the crank sensor or circuit will prevent the engine from starting. If you suspect a bad CKP on your car, follow this guide to test the unit and, if necessary, replace it.

    Testing
  1. With your CKP sensor, you can test for voltage output and compare the results to manufacturer specifications. If your voltmeter comes with needle probes, back probe the wires at the sensor connector. If this is not possible, unplug the sensor electrical connector and plug the two halves to a test connector or a couple of jumper wires. Then plug back the connector.

    Set your digital multimeter to AC milivolts range and have a helper crank the engine. A typical sensor will have an output above 200 mV. However, you should compare your results with the specifications listed in the service manual for your particular vehicle.

    If your service manual gives a resistance value, you can test the sensor without having to crank up the engine. Unplug the sensor and connect the meter probes to each sensor wire connector. Set your meter to Ohms and compare your reading to the resistance value specified in your service manual. If your voltage or resistance values are out of specifications, replace the sensor.

    If your test results are within specifications, check the sensor electrical connector and wiring harness. It is common for loose connectors or broken wires to keep the sensor from communicating with the Engine Management System (EMS). Also, make sure to check the trigger wheel. The wheel, located on the crankshaft or damper, may have missing or damaged teeth. Any of these parts or components may trigger a CKP sensor or circuit trouble code. Replacing the Sensor
  2. Look for the CKP sensor at the front or side of the engine (see Resources). It is usually held in place by a single bolt. Lift the front of your vehicle using a floor jack and support it on two jack stands. Then unplug the sensor electrical connector and remove the bolt with a ratchet and socket.

    When installing the new unit, make sure the mounting surface is completely clean to keep the exact distance from the tip of the sensor to the trigger wheel. On some particular models, you might need to adjust the sensor air gap, or its distance from the wheel, before locking the unit in place. If necessary, follow the instructions on your particular vehicle manual for this adjustment.

Mar 03, 2011 | 2003 Chrysler 300M

1 Answer

Where is the location of crankshaft sensor in VW passat,1995,2,8?


OPERATION
The crankshaft position sensor detects gaps in the sensor ring corresponding to TDC of each cylinder. The sensor uses a permanent magnet, core and coil. The changing gap causes the magnetic field near the sensor to change. This in turn varies the voltage signal to the ECM. The ECM uses the signals for ignition timing and fuel synchronization.
TESTING
Audi A4 2.8L
  1. Disconnect the electrical harness connector.
  2. Switch the DMM to its resistance range and connect it between the CKP sensor connector terminals 1 and 2 , using jumper wires from VW 1594 test kit. The DMM should show approximately 1,000 ohms.
  3. If the specified value is not obtained, replace the crankshaft position sensor.
  4. If the specified value is obtained, connect the DMM between terminal 1 and 3 (GND), then between terminals 2 and 3 (GND). The DMM should show infinite ohms (open).
  5. If the specified value is not obtained, replace the crankshaft position sensor.
  6. If the specified value is obtained, check the wiring for continuity or short between crankshaft position sensor and ECM, using a wiring diagram.
  7. Connect a VAG 1598/19 test box to the ECM harness connector.
  8. Check the CKP sensor shielding for continuity by connecting a DMM between terminal 3 and engine ground (GND). The DMM should show a maximum of 1 ohm.
  9. Check the wiring for continuity between the CKP sensor connector terminal 1 and the test box socket A9 , then between the CKP sensor connector terminal 2 and test box socket A10 . There should be a maximum of 1 ohm.
  10. If the specified values are not obtained, check and eliminate any short or open circuits in the wiring.
  11. If the wiring is OK, replace ECM.

Passat 2.8L
  1. Disconnect the harness connector from the crankshaft position sensor.
  2. Switch the DMM to its ohms range.
  3. Connect the DMM to terminals 1 and 2 of CKP sensor harness, using adaptor leads from VW 1594 adaptor kit.
  4. Resistance between terminals 1 and 2 must be 500-700 ohms.
  5. Connect the DMM to terminals 1 and 2 , then 1 and 3 of the CKP sensor harness, using adaptor leads from VW 1594 adaptor kit.
  6. The resistance must be infinite ohms.

REMOVAL & INSTALLATION
  1. Disconnect the electrical connector from the sensor.
  2. Remove the crankshaft sensor retaining bolt and remove the sensor.
  3. Replace the O-ring and lightly lubricate it with clean engine oil.
Installation is reverse of removal.

---
To remove the sensor:

  • Disconnect the wiring harness.
  • Unbolt the sensor mounting bolt.
If the crankshaft timing sensor or the camshaft reference sensor is removed, follow this procedure when the sensor is replaced:
  • Thoroughly clean the sensor tip and install a new spacer on the sensor tip. New sensors should be supplied with the spacer installed.
fr_24.15.gif

Spacer on crankshaft timing sensor and camshaft position sensor.

  • Install the sensor until the spacer lightly touches the sensor ring, and tighten the sensor mounting bolt 105 in.lb.
---
Look for the sensor on the axis of the crankshaft near either end of the engine.

Good luck on locating this sensor.

Jan 17, 2011 | Volkswagen Passat Cars & Trucks

2 Answers

What is malfuntion code P2127?


the (app sensor)accelerator pedal position. to test unplug the electrical connector at the accelerator pedal position sensor. Using a digital multimeter and with the key in the RUN position, check the Green wire for 5 volts (pos lead from meter to green wire, neg lead to ground). Then check the black/white wire for good ground (pos lead from meter on Green wire, neg lead to black/white wire)--should read 5 volts. Reconnect electrical connector to sensor.






TIM.........

Oct 26, 2010 | 2004 Hyundai Santa Fe

1 Answer

My car got FS engine. it cranks but no spark on plugs.replaced another distributor still got same problem.supply is on connector.


TESTING
  1. Disconnect the crankshaft position sensor wire harness plug.
  2. Connect an ohmmeter to the sensor terminals A and B and measure the resistance. Fig. 1: Crankshaft position sensor connector terminals. Measure the resistance across the A and B terminals 89544g27.gif
    Fig. 2: Measure the air gap between the crankshaft position sensor and the crankshaft pulley 89544g28.gif

  3. The reading should be 520–580 ohms at 68°F (20°C).
  4. If not as specified, replace the sensor.
  5. Measure the air gap of the sensor between the crankshaft pulley and the sensor.
  6. Proper air gap should be 0.040–0.080 in. (1–2 mm).
  7. If not as specified, inspect the crankshaft pulley and/or replace the sensor.
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Aug 02, 2010 | 1993 Mazda 626

1 Answer

Where would i find the crank sensor in a 2.4l twin cam motor


the crank sensor is usually located near the crankshaft of the engine, not on the transmission with wires leading to it.

TESTING Fig. 1: Attach suitable jumper wires between the CKP sensor and CKP sensor harness. A DC volt meter can then be attached to the necessary terminals to test the sensor as the engine is being cranked 91114p21.jpg
Typically, when a crankshaft position sensor DTC is set, checking the integrity of the wiring connecting the sensor (using a digital volt meter) to the PCM harness connector is the best way to determine if the sensor is faulty. If the wires all have continuity, and a DTC is set, it is probable that the sensor is faulty. Although a procedure is given here for testing of the crankshaft sensor itself, it is generic, and may not apply to every vehicle. Typically, the crankshaft position sensor harness connector wire leads are labeled. However, it is advisable to use this procedure in conjunction with the wiring diagrams in Section 6 to identify the terminals on the crankshaft sensor before connecting test leads.
  1. Turn the ignition key OFF.
  2. Unplug the sensor electrical harness and check the terminals for corrosion and damage.
  3. Check the sensor wiring harness wires for continuity and repair as necessary.
  4. Attach the sensor harness making sure it is firmly engaged.
  5. Using a Digital Volt Ohm Meter (DVOM) set on the DC scale, backprobe the sensor signal terminal (terminal A) with the positive lead of the meter and backprobe the sensor ground terminal (terminal B) with the negative lead of the meter.
  6. Have an assistant crank the engine and observe the meter.
  7. You should have approximately a 5 volt reference signal pulse. If not the sensor may be defective.
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Jul 22, 2010 | 1997 Pontiac Grand Am

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