I have a 1989 240sx with a 2.4 liter engine and I looked into this problem, and found that the only wrench I had that could fit it was 1-1/4 inches. I think that it is really 30 mm. I would think that yours would be the same size. Its located really close to the firewall though, so its a pain to remove with so little room.
that my friend is the tube that goes from the exhaust manifold to the egr valve make...
as hot as the exhaust manifold there are exhaust gases passing through it
To replace the EGR tube on a 2007 Dodge Dakota, first, ensure the engine is cool and disconnect the battery. Remove any components obstructing access to the EGR tube, such as the intake manifold or heat shield. Unscrew the old EGR tube from the EGR valve and the exhaust manifold, then install the new tube by securing it to both connections. Finally, reassemble any removed components and reconnect the battery.
To replace the EGR tube on a 1996 Cadillac STS, first ensure the engine is cool and disconnect the negative battery terminal. Remove the EGR valve and any mounting bolts or brackets securing the EGR tube to the exhaust manifold. Carefully detach the old EGR tube, clean the mounting surfaces, and install the new tube, securing it with the bolts. Finally, reattach the EGR valve, reconnect the battery, and start the engine to check for any leaks.
Disconnect the frontand rear o2 sensor electrical connectors. Separate the catalytic converter from the flex-pipe. Remove the fasteners between the catalytic converter and the exhaust manifold. Disconnect the EGR tube from the catalytic converter. Remove band from the front of the catalytic that holds it to the bracket on the front of the engine block. Remove fasteners holding exhaust manifold to head.
The EGR valve is easy to remove. Just take out the two bolts holding it in. The problem is the exhaust tube leading into it. Follow the tube to the exhaust manifold. There you will see two nuts holding it on. Remove those two nuts and then all you have to do is maneuver the assy from the engine compartment...
egr valve is located on left rear of cylinder head. to find it just look for the metal tube running from the exhaust manifold to the back of the intake manifold... the thingie there where the metal tube joins the intake manifold is the egr valve
4.2L, 4.6L, 5.4L and 6.8L Engines 1. Disconnect the negative battery cable. 2. Remove the vacuum hose from the EGR valve. 3. On the 4.6L engine, remove the nut and brake booster bracket. 4. On the 5.4L engine, remove the DPFE sensor retaining nuts and place the sensor to the side to allow access to the EGR tube. 5. Disconnect the EGR valve-to-exhaust manifold tube from the EGR valve. 6. Remove the EGR valve mounting bolts, then separate the valve from the 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: 8. Install the EGR valve, along with a new gasket, on the manifold, then install and tighten the mounting bolts. 9. Connect the EGR valve-to-exhaust manifold tube to the valve, then tighten the tube nut to 25-35 lbs. (34-47 Nm). 10. Connect the vacuum hose to the EGR valve. 11. On the 5.7L engine, install the DPFE sensor. 12. On the 4.6L engine install the brake booster bracket and the retaining nut. 13. Connect the negative battery cable. 4.2L, 4.6L, 5.4L and 6.8L Engines 1. Disconnect the negative battery cable. 2. Remove the vacuum hose from the EGR valve. 3. On the 4.6L engine, remove the nut and brake booster bracket. 4. On the 5.4L engine, remove the DPFE sensor retaining nuts and place the sensor to the side to allow access to the EGR tube. 5. Disconnect the EGR valve-to-exhaust manifold tube from the EGR valve. 6. Remove the EGR valve mounting bolts, then separate the valve from the 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: 8. Install the EGR valve, along with a new gasket, on the manifold, then install and tighten the mounting bolts. 9. Connect the EGR valve-to-exhaust manifold tube to the valve, then tighten the tube nut to 25-35 lbs. (34-47 Nm). 10. Connect the vacuum hose to the EGR valve. 11. On the 5.7L engine, install the DPFE sensor. 12. On the 4.6L engine install the brake booster bracket and the retaining nut. 13. Connect the negative battery cable.
On a 1987 Cutlass Supreme with a 4.0L V8 engine, the EGR (Exhaust Gas Recirculation) valve is typically located on the intake manifold, near the rear of the engine. It is usually mounted to the intake manifold and connected to the exhaust system via a tube. You may need to remove some components for better access, but it should be relatively easy to identify by following the exhaust gas recirculation tube from the exhaust manifold to the valve.
= EGR Valve = 4.2L, 4.6L, 5.4L and 6.8L Engines 1. Disconnect the negative battery cable. 2. Remove the vacuum hose from the EGR valve. 3. On the 4.6L engine, remove the nut and brake booster bracket. 4. On the 5.4L engine, remove the DPFE sensor retaining nuts and place the sensor to the side to allow access to the EGR tube. 5. Disconnect the EGR valve-to-exhaust manifold tube from the EGR valve. 6. Remove the EGR valve mounting bolts, then separate the valve from the 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: 8. Install the EGR valve, along with a new gasket, on the manifold, then install and tighten the mounting bolts. 9. Connect the EGR valve-to-exhaust manifold tube to the valve, then tighten the tube nut to 25-35 lbs. (34-47 Nm). 10. Connect the vacuum hose to the EGR valve. 11. On the 5.7L engine, install the DPFE sensor. 12. On the 4.6L engine install the brake booster bracket and the retaining nut. 13. Connect the negative battery cable.
Removal Remove the air cleaner outlet tube. Disconnect the mass air flow (MAF) sensor electrical connector. Disconnect the breather pipe. Remove the air cleaner. Fully loosen the exhaust gas recirculation (EGR) valve to exhaust manifold tube nut from the bottom of the EGR valve. Disconnect the vacuum line from the top of the EGR valve. Remove the EGR valve. Remove and discard the EGR valve gasket. Installation NOTE: Use a new EGR valve gasket when installing the EGR valve. To install, reverse the removal procedure.
EGR (Exhaust Gas Recirculation) look for it to be attached to the exhaust manifold or a pipe from the exhaust manifold