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Location egr sensor 1998 z71 pickup - Cars & Trucks

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Should be two on the manifold and two on the exhaust.

Posted on Dec 11, 2014


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The EGR (Evaporative Gas Recirculation) system has several components. The most likely one to cause an error is the EGR Position Sensor, located at the throttle body. If the EGR Sensor has become disconnected, has failed, or is sensing that the EGR valve has become stuck, it will generate an error. Check the EGR valve to be sure it isn't stuck, and check the EGR Position Sensor to be sure it is operating properly.

Also, in some cases, if the Canister Purge Valve has failed, it will generate an error. The Canister Purge Valve is usually located at one of the front fenders near the Carbon Canister.

Jul 19, 2014 | 1998 Toyota 4Runner

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Pintle sensor location 1998 buick park ave remove egr value

i took my car to NA Auto Repair they did a great job at very resonable rates

Feb 13, 2013 | 1998 Buick Park Avenue

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1998 chev.s-10 2.2 lt codes # 107...172..404..405 truck stalls at lights..jerks..won't take gas..pedal to and on problem...sometimes good for hours , than comes back

Hi, you may have 2 separate problems here. 107 indicates the MAP sensor, and that may be also causing the 172 code. The other codes indicate the EGR valve position sensor, which is integral to the valve itself. I would test both of these before replacing (the EGR valve is about $150 and the MAP sensor about $60-70). First check the connectors on them for any corrosion or poor connection. The MAP sensor is mounted to the top of the intake manifold. The EGR valve is at the back of the engine near the brake booster. Please let me know if you have any questions, and thanks for using FixYa.

See Figures 1, 2 and 3 jturcotte_1442.gif

Fig. Fig. 1: Typical Manifold Absolute Pressure (MAP) sensor wiring diagram (wire color, terminal identification/location may vary on certain models)

  1. Backprobe with a high impedance voltmeter at MAP sensor terminals A and C .
  2. With the key ON and engine off, the voltmeter reading should be approximately 5.0 volts.
  3. If the voltage is not as specified, either the wiring to the MAP sensor or the VCM may be faulty. Correct any wiring or VCM faults before continuing test.
  4. Backprobe with the high impedance voltmeter at MAP sensor terminals B and A .
  5. Verify that the sensor voltage is approximately 0.5 volts with the engine not running (at sea level).
  6. Record MAP sensor voltage with the key ON and engine off.
  7. Start the vehicle.
  8. Verify that the sensor voltage is greater than 1.5 volts (above the recorded reading) at idle.
  9. Verify that the sensor voltage increases to approximately 4.5. volts (above the recorded reading) at Wide Open Throttle (WOT).
  10. If the sensor voltage is as specified, the sensor is functioning properly.
  11. If the sensor voltage is not as specified, check the sensor and the sensor vacuum source for a leak or a restriction. If no leaks or restrictions are found, the sensor may be defective and should be replaced.


Fig. Fig. 2: Using jumper wires and a high impedance voltmeter test between MAP sensor terminals A and C with the key ON and engine off. The voltage should be approximately 5 volts


Fig. Fig. 3: Next test between MAP sensor terminals A and B with the key ON and engine off. The voltage should be approximately 0.5 volts

EGR test: requires a GM scan tool:


EGR replacement:

Linear EGR Valve

  1. Disconnect the negative battery cable.

Note the position of the EGR valve prior to removal. Do not rotate the valve 180?.
  1. Unplug the valve electrical connection..
  2. Unfasten the valve retainers, then remove the valve and the gasket.

To install:

  1. Clean all gasket residue from the gasket mating surfaces.
  2. Install a new gasket and the valve.
  3. Install the valve retainers.
  4. On 1998-99 2.2L models, tighten the retainers to 19 ft. lbs. (26 Nm).
  5. Attach the valve electrical connections and connect the negative battery cable.

Component locations:


EGR valve wiring:

EGR valve pic;


MAP sensor pic:


Apr 03, 2011 | 1998 Chevrolet S-10 Pickup

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How to install a 1992 chevy pickup camshaft sensor 1992 chevy pickup 1500 z71 and where is it located? i have no spark coming from my coil so this is my next task? any other answers?

There isn't a camshaft sensor. The distributor has a control module and a pick up coil inside of it, 1 or both could be bad, it's usually best to replace both. Some parts stores can test them. The is also an Electronic Spark Control Module. I would check the pick up coil and control module.

Apr 30, 2010 | 1992 Chevrolet K1500

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Troubleshooting codes 1998 chevy truck S10 pick up were to find parts on truck ; codes p0171,p0401 ,p0452,p0131

p0171-System Adaptive Fuel Too Lean


p0452-EVAP Fuel Tank Pressure Sensor Low Input

p0131-Upstream Heated 02 Sensor Circuit

Hope That Helps.

Jan 15, 2010 | 1998 Chevrolet S-10 Pickup

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Where is the EGR sensor located on a 1998 ford contour se

It's a valve not a sensor.
Where? it depends what engine do you have 4 cyl 6 cyl?
How do you know the EGR valve could be bad? check engine light on? OBD code? diagnostic made?
Help us to help you please provide more information
Hope it will help

Dec 28, 2009 | 1998 Ford Contour

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My 1998 s-10 is idling high and low, keeps switching back and forth when in neutral, also it sounds like a pump or something is running sometimes from underneath the truck.. just recently had my tranny...

If you have an egr code, check that and clean/replace as needed. be sure passages to and from it are clear and that any electrical and vacuum connections are good. Likely that will solve the "searching" problem, but if not, next item to check would be your mass air flow sensor.

Oct 08, 2009 | 1998 Chevrolet S-10 Pickup

2 Answers


Bank two oxygen sensor, located in front of the catalytic converter on the passenger side has failed. The actual code reads: P0151 - Heated Oxygen Sensor (HO2S) Circuit Low Voltage Bank 2 Sensor 1.

Aug 05, 2009 | 1998 Chevrolet K1500

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