Question about 1991 Chevrolet Corvette

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On an 89 Corvette motor, there is a tube that goes from the rear of the intake manifold by the EGR valve over the valve cover to the exhaust manifold. In that tube is a brass fitting with a wire coming off of it. What is that part called? What is it for and is the wire supposed to have power to it and if so, how many volts. If it does take power is it ignition switched or from the computer. I did an engine swap and that's 1 of only a couple of hurdles left. any help would be appreciated.

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That brass fitting and wire is an exhaust tepurature sensor, if youre docar es not have an exhaust tempurature gauge disregard.

Posted on Dec 10, 2008

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What is a egr valve


  1. Install a tachometer on the engine, following the manufacturer's instructions.
  2. Detach the engine wiring harness connector from the Idle Air Control (IAC) solenoid.
  3. Disconnect and plug the vacuum supply hose from the EGR valve.
  4. Start the engine, then apply the parking brake, block the rear wheels and position the transmission in Neutral.
  5. Observe and note the idle speed.
If the engine will not idle with the IAC solenoid disconnected, provide an air bypass to the engine by slightly opening the throttle plate or by creating an intake vacuum leak. Do not allow the idle speed to exceed typical idle rpm.
Using a hand-held vacuum pump, slowly apply 5-10 in. Hg (17-34 kPa) of vacuum to the EGR valve nipple.
  1. If the idle speed drops more than 100 rpm with the vacuum applied and returns to normal after the vacuum is removed, the EGR valve is OK.
  2. If the idle speed does not drop more than 100 rpm with the vacuum applied and return to normal after the vacuum is removed, inspect the EGR valve for a blockage; clean it if a blockage is found. Replace the EGR valve if no blockage is found, or if cleaning the valve does not remedy the malfunction.


EGR Valve Removal & Install
3.0L OHV (2 valve) and 3.4L SHO engines

b9175c5.jpg

Fig. : EGR mounting-3.0L OHV (2 valve) engine

5fcd84e.jpg

Fig. : EGR mounting-3.4L (SHO) engine

4552fc2.jpg

Fig. : Remove the two retaining bolts and...

b849310.jpg

Fig.: ... remove the valve from the intake manifold

795549d.jpg

Fig.: Thoroughly clean the mating surfaces of the manifold and the EGR valve (if being reused)
  1. Disconnect the negative battery cable.
  2. Remove the vacuum hose from the EGR valve.
  3. Using a 22mm wrench or crowfoot, disconnect the EGR valve-to-exhaust manifold tube from the EGR valve.
  4. Remove the EGR valve mounting fasteners, then separate the valve from the intake manifold.
  5. Remove and discard the old EGR valve gasket, and clean the gasket mating surfaces on the valve and the intake manifold.
To install:
  1. Install the EGR valve, along with a new gasket, on the upper intake manifold, then install and tighten the mounting bolts to 15-22 ft. lbs. (20-30 Nm).
  2. Connect the EGR valve-to-exhaust manifold tube to the valve, then tighten the tube nut to 26-47 ft. lbs. (35-65 Nm).
  3. Connect the vacuum hose to the EGR valve.
  4. Connect the negative battery cable.

3.0L OHC (4 valve)

d8a563e.jpg

Fig. : EGR mounting-3.0L OHC (4 valve) engine
  1. Disconnect the negative battery cable.
  2. Remove the vacuum hose from the EGR valve.
  3. Remove the two EGR tube-to-EGR valve retaining nuts.
  4. Remove the EGR valve mounting fasteners, then separate the valve from the intake manifold.
  5. Remove and discard the old EGR valve gasket, and clean the gasket mating surfaces on the valve and the intake manifold.
To install:
  1. Install the EGR valve, along with a new gasket, on the upper intake manifold, then install and tighten the mounting bolts to 15-22 ft. lbs. (20-30 Nm).
  2. Connect the EGR valve-to-EGR tube, then tighten the retaining nuts.
  3. Connect the vacuum hose to the EGR valve.
  4. Connect the negative battery cable.

Tell us news.

Oct 12, 2012 | 1998 Nissan Maxima

1 Answer

Auto part store says there is no egr valve on 08 dodge ram 1500 4.7. True?


25 - Emissions Control/Exhaust Gas Recirculation, Gas/VALVE, Exhaust Gas Recirculation (EGR), 4.7L/Removal REMOVAL collapse.gif Labor Operations: Click to display a list of Labor Operations associated with this procedure

2431021.jpg The electronic EGR valve and solenoid assembly is attached to the rear of the left cylinder head. An exhaust gas routing tube connects the EGR valve to the intake manifold.
1. Use a diagnostic scan tool to record any Diagnostic Trouble Codes (DTC). 2. Remove the throttle body resonator. 3. Perform the fuel system pressure release procedure (Refer to 14 - Fuel System/Fuel Delivery - Standard Procedure) 4. Disconnect and isolate the negative battery cable.


2430847.jpg 5. Disconnect the power brake booster vacuum hose (1) and the vapor canister purge hose (2) at the intake manifold.


2430720.jpg 6. Disconnect the EGR valve solenoid electrical connector (1).


2430801.jpg 7. Remove the EGR valve assembly retaining bolts (1). 8. Remove the EGR valve and the EGR routing tube from the engine as an assembly. 9. Remove and discard the metal gasket located between the cylinder head and the EGR valve assembly.


2433378.jpg 10. Remove the EGR valve routing tube retaining bolts (1) at the EGR valve assembly 11. Remove the EGR valve routing tube and discard the gasket.

Feb 14, 2012 | 2008 Dodge Ram 1500 2WD

1 Answer

Torque setting for a 1998 ford taurus 3.0 intake manifold


TORQUE SPECIFICATIONSDescriptionNmLb-FtLb-InEngine Air Cleaner Tube Clamps1.6-2.2-14-19Engine Control Sensor Wiring Through Bolts2.5-3.5-23-30Generator to Bracket Bolt3727-Generator to Cylinder Head Bolt4835-Generator Brace to Upper Intake Manifold Bolts and Nut12-209-14-Intake Manifold Support to Throttle Body8-12-71-106Intake Manifold Support to RH Cylinder Head40-5530-40-Degas Tube to Upper Intake Manifold Bolts8-12-71-106Camshaft Sprocket to Camshaft Bolt50-7037-51-Camshaft Thrust Plate Bolt10-88Coil and Bracket to Cylinder Head Bolt40-5530-40-Connecting Rod Nut31-3923-28-Crankshaft Damper to Crankshaft Bolt125-16593-121-Crankshaft Pulley to Damper (4 Bolts)40-6030-44-Cylinder Head Retaining Bolt(1)(1)-Accelerator Cable Shield Bolts1.4-13Camshaft Position Sensor Housing Retaining Bolt2417-EGR Tube Connector to Exhaust Manifold40-4730-34-EGR Valve to Upper Intake Manifold Bolt20-3015-22-EGR Tube to EGR Valve and Exhaust Manifold35-6526-47-Exhaust Manifold Bolt/Stud20-2515-18-Flywheel to Crankshaft Bolt73-8754-64-Fuel Injection Supply Manifold to Intake Manifold8-12-71-106Throttle Cable Bracket1713-Dual Converter Y Pipe to Exhaust Manifolds34-4725-34-Crankshaft Position Sensor Bolts5-7-45-61Intake Manifold to Cylinder Head Bolt (5)(2)(2)-Main Bearing Cap Bolt75-8556-62-Oil Drain Plug11-169-11-Oil Filter Insert to Cylinder Block27-4020-29-Oil Filter to Oil Filter Adapter(3)(3)-Oil Galley and Cooling Jacket Plugs2014-Oil Level Indicator Tube to Exhaust Manifold Nut16-2012-14-Engine to Transaxle/Torque Converter Assembly Bolts40-6030-44-Torque Converter Nuts27-4620-33-Transmission Range Sensor Nut16-2212-16-Front Sub-Frame-to-Body Bolts77-10357-75-Oil Pressure Sensor16-2212-16-Oil Pump to Cylinder Block Bolt40-5530-40-Power Steering Bracket to Cylinder Head Bolt40-5530-40-Valve Cover to Cylinder Head Bolts/Studs (5)10-14-89-123Right Exhaust Manifold Heat Shield Retaining Bolts8-12-71-106Rocker Arm Seat to Cylinder Head Bolt(4)(4)-Water Outlet Connection to Intake Manifold Bolt10-14-89-123Upper Intake Manifold to Lower Intake Manifold Bolt/Stud20-3015-22-Engine Front Cover to Cylinder Block Bolt (No. 1-10)2518-Engine Front Cover to Cylinder Block Bolt (No. 11-15)10-88Water Pump Pulley to Hub (4 Bolts)20-3015-22-Water Pump to Front Cover Bolt8-12-71-106Wiring Retainer Bracket Nut20-3015-22-Valve Tappet Guide Plate to Cylinder Block10-14-89-123Ignition Coil Bracket40-5530-40-Oil Pan to Cylinder Block Bolt10-14-89-123Water Bypass Tube Nut20-3015-22-Crankshaft Pulley Bolts40-5530-40-


  1. Tighten in four steps (refer to illustration in Cylinder Head Installation for tightening sequence):
    • Tighten in sequence to 70-90 Nm (52-66 Lb-Ft)
    • Then back off all bolts 360 degrees
    • Tighten in sequence to 45-55 Nm (34-40 Lb-Ft)
    • Tighten in sequence to 85-99 Nm (63-73 Lb-Ft)
  2. Tighten in two steps
    • 20-30 Nm (15-22 Lb-Ft)
    • 26-32 Nm (20-23 Lb-Ft)
  3. Advance 3/4 to 1 turn after gasket contacts sealing surface or tighten to 13-15 Nm (10-11 Lb-Ft).
  4. Tighten in two steps:
    • 7-15 Nm (6-11 Lb-Ft)
    • 26-38 Nm (20-28 Lb-Ft)
  5. Refer to illustration in the Cylinder Head Installation procedure for tightening sequence.

Jan 10, 2012 | 1998 Ford Taurus

1 Answer

Starter needs to be replaced. Need instruction procedure for a do it yourselfer.


Hi, I have pasted the procedure from autozone.com below. Because this requires removal of the intake manifold, please be as sure as possible that your starter needs replacement. If you have any doubt, please let me know what your symptoms are and what troubleshooting you have done that led you to believe your starter is bad. Also, if you have any questions about the procedure below, please let me know. Thanks for using FixYa.


Removal & Installation


Disconnect the Negative battery cable


Relieve the fuel system pressure (you can do this by placing a rag over the schrader valve on the fuel rail and pressing in the valve stem--just be careful not to spray fuel on your eyes).


Drain the cooling system.


Remove or disconnect the following:


  • Intake manifold heat shield
  • Sight shield
  • Coil module connectors from the coil modules located on the valve covers
  • Positive Crankcase Ventilation (PCV) hose and valve from the valve cover
  • Fuel regulator vacuum tube
  • Vacuum tubes from the AIR solenoid
  • Fuel inlet and return lines
  • Fuel rail bracket retaining nut at the rear lift bracket
  • 2 pushnuts attaching the engine coolant heater wire and set it aside, if equipped
  • Fuel injector electrical connections
  • Fuel rail and injectors
  • Plenum duct clamp at the rear of the intake manifold, loosen
  • Intake manifold bolts and the manifold
Clean the manifold mating surfaces.


Remove or disconnect the following:
Starter electrical connectors Starter motor

jturcotte_1382.gif


Fig. View of starter motor removal and wires



To install:

Install or connect the following:

  • -S- terminal wire. Torque the nut to 35 inch lbs. (4 Nm).
  • Starter electrical connectors. Torque the nut to 89 inch lbs. (10 Nm).
  • Starter motor
  • Mounting bolts. Torque the bolts to 22 ft. lbs. (30 Nm).


jturcotte_1383.gif


Fig. Intake manifold torque sequence- 4.6L engines

  1. Grease the inside edge of the rubber plenum duct.
  2. Position the intake manifold by performing the following sub-steps:
    1. Place the rear of the intake manifold into the plenum duct.
    2. Place the front of the intake manifold downward on to the cylinder heads.

  3. Install the intake manifold bolts and torque to 89 inch lbs. (10 Nm) in the sequence illustrated. DO NOT torque the intake manifold bolts when the engine is HOT or at operating temperature.
  4. Make sure the plenum duct is fully attached to the rear of the intake manifold and tighten the plenum duct clamp to 20 inch lbs. (2.25 Nm).
  5. Install or connect the following:

    Fuel rail and injectors and tighten the rail retainers to 89 inch lbs. (10 Nm) Fuel injector electrical connections Alternator coolant pipe/surge tank pipe and position onto the fuel rail studs Engine coolant heater wire onto the studs and install the pushnuts, if equipped Fuel rail bracket retaining nut at the rear lift bracket and tighten to 89 inch lbs. (10 Nm) Fuel inlet and return lines Vacuum tubes to the AIR solenoid Fuel regulator vacuum tube Positive Crankcase Ventilation (PCV) valve and hose to the valve cover Coil module connectors to the coil modules located on the valve covers Sight shield Intake manifold heat shield Negative battery cable
  6. Fill and bleed the cooling system.

Mar 31, 2011 | 2002 Cadillac Deville

1 Answer

How can I change the egr valve on my 95 lincoln towncar myself


The EGR valve is located on the rear right area of the intake manifold. The egr valve connected to the right exhaust manifold.It is connected via a metal tube. The valve and the tube has to be removed as an assembly, and separated once it is off the car. The EGR stands for Exhaust Gas Recirculation. It is part of the vehicle emissions system.There are generally three parts to the EGR system: the EGR Valve, an actuator solenoid, and a pressure sensor EGR (DPFE). These things work together.They are easily cleaned by removing the cover on the rear of the intake manifold. these ports are small, and easily clogged by carbon, and oil residue.There are two ways to replace the egr valve. To replace the EGR valve get ahold of a 11mm Gear Wrench and do it from the top. Or If you have a lift, the jack up the vehicle of jack stands and you can drop the exhaust from the bottom and get it that way. -------------- Keep updated for any further queries.Thanks.

Oct 14, 2010 | 1995 Lincoln Town Car

1 Answer

Picture of egr valve and were it is located


dffc43b.jpg

Fig. 11: EGR valve and component mounting-3.0L engine


da251ab.jpg

Fig. 12: EGR valve and component mounting-3.8L engine

Removal:
  1. Disconnect the negative battery cable.
  2. If necessary, remove the air inlet tube from the throttle body and air cleaner housing.
  3. Label and detach all vacuum hoses from the EGR valve.
  4. Label and detach any electrical wiring harness connectors from the EGR valve.
  5. Disconnect the EGR valve-to-exhaust manifold tube from the EGR valve.
  6. Remove the EGR valve mounting fasteners, then separate the valve from the upper intake manifold.
  7. Remove and discard the old EGR valve gasket, and clean the gasket mating surfaces on the valve and the intake manifold.
To install:
  1. Install the EGR valve, along with a new gasket, on the upper intake manifold, then install and tighten the mounting bolts to 15-22 ft. lbs. (20-30 Nm) on 3.8L engines, or to 106-159 inch lbs. (12-18 Nm) on 5.0L engines.
  2. Connect the EGR valve-to-exhaust manifold tube to the valve, then tighten the tube nut to 30 ft. lbs. (41 Nm).
  3. Connect all wiring or hoses to the EGR valve.
  4. Install the air inlet tube.
  5. Connect the negative battery cable.

Hope this helps (remember comment and rated this).

Jul 27, 2010 | 1995 Ford Windstar

3 Answers

EGR Valve not working


EGR Valve Testing
  1. Install a tachometer on the engine, following the manufacturer's instructions.
  2. Detach the engine wiring harness connector from the Idle Air Control (IAC) solenoid.
  3. Disconnect and plug the vacuum supply hose from the EGR valve.
  4. Start the engine, then apply the parking brake, block the rear wheels and position the transmission in Neutral.
  5. Observe and note the idle speed.
If the engine will not idle with the IAC solenoid disconnected, provide an air bypass to the engine by slightly opening the throttle plate or by creating an intake vacuum leak. Do not allow the idle speed to exceed typical idle rpm.
Using a hand-held vacuum pump, slowly apply 5-10 in. Hg (17-34 kPa) of vacuum to the EGR valve nipple.
  1. If the idle speed drops more than 100 rpm with the vacuum applied and returns to normal after the vacuum is removed, the EGR valve is OK.
  2. If the idle speed does not drop more than 100 rpm with the vacuum applied and return to normal after the vacuum is removed, inspect the EGR valve for a blockage; clean it if a blockage is found. Replace the EGR valve if no blockage is found, or if cleaning the valve does not remedy the malfunction.


EGR Valve Removal & Install
3.0L OHV (2 valve) and 3.4L SHO engines

b9175c5.jpg

Fig. : EGR mounting-3.0L OHV (2 valve) engine

5fcd84e.jpg

Fig. : EGR mounting-3.4L (SHO) engine

4552fc2.jpg

Fig. : Remove the two retaining bolts and...

b849310.jpg

Fig.: ... remove the valve from the intake manifold

795549d.jpg

Fig.: Thoroughly clean the mating surfaces of the manifold and the EGR valve (if being reused)
  1. Disconnect the negative battery cable.
  2. Remove the vacuum hose from the EGR valve.
  3. Using a 22mm wrench or crowfoot, disconnect the EGR valve-to-exhaust manifold tube from the EGR valve.
  4. Remove the EGR valve mounting fasteners, then separate the valve from the intake manifold.
  5. Remove and discard the old EGR valve gasket, and clean the gasket mating surfaces on the valve and the intake manifold.
To install:
  1. Install the EGR valve, along with a new gasket, on the upper intake manifold, then install and tighten the mounting bolts to 15-22 ft. lbs. (20-30 Nm).
  2. Connect the EGR valve-to-exhaust manifold tube to the valve, then tighten the tube nut to 26-47 ft. lbs. (35-65 Nm).
  3. Connect the vacuum hose to the EGR valve.
  4. Connect the negative battery cable.

3.0L OHC (4 valve)

d8a563e.jpg

Fig. : EGR mounting-3.0L OHC (4 valve) engine
  1. Disconnect the negative battery cable.
  2. Remove the vacuum hose from the EGR valve.
  3. Remove the two EGR tube-to-EGR valve retaining nuts.
  4. Remove the EGR valve mounting fasteners, then separate the valve from the intake manifold.
  5. Remove and discard the old EGR valve gasket, and clean the gasket mating surfaces on the valve and the intake manifold.
To install:
  1. Install the EGR valve, along with a new gasket, on the upper intake manifold, then install and tighten the mounting bolts to 15-22 ft. lbs. (20-30 Nm).
  2. Connect the EGR valve-to-EGR tube, then tighten the retaining nuts.
  3. Connect the vacuum hose to the EGR valve.
  4. Connect the negative battery cable.

Tell us news.

May 04, 2010 | 1999 Mercury Sable

1 Answer

EGR VALVE 1999 MERCURY COUGER


SECTION 303-08: Engine Emission Control 1999 Cougar Workshop Manual REMOVAL AND INSTALLATION Exhaust Gas Recirculation (EGR) Valve Removal
  1. Remove the air cleaner outlet tube.
    1. Disconnect the intake air bypass hose.
    1. Disconnect the positive crankcase ventilation hoses.
    1. Remove the air cleaner outlet tube.
  1. Disconnect the tube from the exhaust gas recirculation valve.
  1. Remove the exhaust gas recirculation valve.
    • Disconnect the vacuum hose.
Installation
  1. sxu~us~en~file=ani_caut.gif~gen~ref.gif CAUTION: When cleaning the gasket faces, do not allow debris to enter the intake manifold or exhaust gas recirculation valve.
    Clean the gasket faces of the intake manifold and exhaust gas recirculation valve.
  1. Install a new exhaust gas recirculation valve gasket.
  1. Position the EGR valve and install the bolts.
    • Install the vacuum hose.
  1. Connect the EGR tube.
  1. Install the idle air control valve. For additional information, refer to Section 303-14A . For additional information, refer to Section 303-14B .

Sep 15, 2009 | 1999 Mercury Cougar

2 Answers

Where is the EGR valve located on a 1985 corvette


Located on intanke manifold. What are you doing?

Typically. there is a build up in the exhaust cross over port that is centered front to back and passes directly under the choke and carb. Be sure the valve at the end of the right (usually) exhaust manifold, is free and working.

The EGR valve is subject to problems from exhaust particles, that sometimes jamb it open.

Sep 11, 2009 | 1985 Chevrolet Corvette

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