To replace the catalytic converter on your F-150 we’re here to help. You’ll need to lift the vehicle, disconnect the oxygen sensor, remove the catalytic converter as well as carry out a few other steps. You can carry out this tutorial of 16 chapters in 240 minutes. Take your extender and your gimbal and let’s get started!
240 minutes
16
4
$200
Open the hood
Turn off your vehicle’s ignition, set the parking brake, pull the hood release handle and open the hood.
Lift the vehicle
Raise the front of your vehicle high enough, which will allow you to remove the catalytic converter later.
We strongly suggest watching our video on ‘How to jack your Ford F-150 safely” before carrying out this step.
Place the vehicle on the jack stands. Position yourself under the vehicle.
Dévisser la ligne d’échappement
Brush and spray the two screws that hold the exhaust line to the catalytic converter with penetrating oil.
Next, using a ratchet and a 13 mm socket, unscrew the two screws.
Retirer la traverse métallique
You will now have to remove the metal crosspiece that supports the gearbox. Brush the two screws in the middle of the crosspiece and lightly spray them with penetrating oil. Then, using a ratchet and an 18 mm socket, unscrew the two nuts from the Gearbox mount.
Using a jack, come to rest against the transfer case in order to hold the gearbox assembly in place when removing the metal crosspiece. Brush the four nuts located at the ends of the metal crosspiece, and lightly spray them with penetrating oil.
Then using two ratchets, an 18 mm socket and a 15 mm socket, unscrew the nuts. Then remove the screws. Before being able to remove the metal crosspiece, you need to remove the two screws holding the heat shields on each side of the crosspiece using a ratchet and a 10 mm socket.
You can now remove the metal crosspiece.
Dévisser le driveshaft
You also need to remove the Gearbox mount, which is held by four screws. In order to remove the two screws on the driver’s side, you need to remove the driveshaft which connects the transfer case to the front differential in order to access the two screws.
On the transfer case side, start by drawing a mark on the driveshaft that will allow you to position it correctly when reassembling. Then, using a ratchet, an extender and a long 10 mm socket, unscrew the 6 retaining screws on the transfer case side.
You can rotate the driveshaft as you unscrew to access all the screws. Perform the same operation on the front differential side. Once all the screws have been removed, tap the driveshaft lightly at the ends in order to uncouple it.
Dévisser le gearbox mount
To access the two retaining screws of the driver’s side gearbox support, you need to remove the retaining screw of the upper silent block using a 15 mm wrench, finish the unscrewing by hand.
Shift the driveshaft to make it easier for you to access. You can now remove the two screws holding the Gearbox mount on the driver’s side using a ratchet, an extender and a 15 mm socket. Do the same on the passenger side.
Disconnect the oxygen sensor
Using a flathead screwdriver, disconnect the two connectors of the oxygen sensors on the driver’s side.
You can shift the driveshaft to make it easier for you to access.
Dévisser le catalyseur
Using a ratchet, two large extenders and a 15 mm socket, unscrew the two nuts that hold the driver’s side catalytic converter to the exhaust manifold. You can shift the driveshaft to facilitate access to the different screws.
Using a flathead screwdriver, disconnect the two oxygen sensor connectors on the passenger side.
Using a ratchet, two large extenders and a 15 mm socket, unscrew the two nuts that hold the passenger side catalytic converter to the exhaust manifold. You can use a gimbal to help you for the second.
Remove the catalytic converter
We advise you to have someone help you to hold the catalytic converter assembly in place to prevent it from falling when unscrewing. Once the two screws have been removed, you can extract the catalytic converter from its location.
You can now remove the Gearbox mount from the old catalytic converter.
Install the oxygen sensor
Start by putting the new oxygen sensors back in place by screwing them back in using a 22 mm wrench. Each oxygen sensor has a different cable length.
Take the example of the old line so as not to invert the sensors. Take the passenger part of the catalytic converter, and install it on the exhaust manifold.
Prepare the installation of the new catalytic converter
Briefly retighten the two catalytic converter retaining nuts on the exhaust manifold to hold the assembly together.
You can coat the junction tube of the two catalytic converters with exhaust sealant. Then put on the holding clamp provided in the kit, then the second tube.
Briefly screw the holding clamp back on. Then coat the second tube with exhaust sealant.
Get the catalytic converter on the driver’s side. Install it in its location. Then thread it into the tube. Briefly retighten the two catalytic converter retaining nuts on the exhaust manifold to hold the assembly together.
You can now correctly thread the catalytic converter into the tube. Briefly screw the holding clamp back on. The final tightening will take place once all the elements have been put back in place.
Reconnect the sensor
Replace the Gearbox mount on the exhaust line retaining rods.
Reconnect the first oxygen sensor on the passenger side. Then clip it back on its support to prevent the boot from melting and to allow the sensor to operate properly.
Reconnect the second oxygen sensor, taking care to first pass it through the hole in the heat shield. Reconnect the two oxygen sensors on the driver’s side, then clip the cables back in their location. Shift the driveshaft to facilitate access to the screws.
Revisser le geabox mount
Lift the catalytic converter assembly in order to be able to replace the Gearbox mount retaining screws, first screw the two screws on the passenger side by hand. Finish tightening using a torque wrench.
Tighten the two screws on the driver’s side. Finish tightening using a torque wrench.
Refit the screw retaining the upper silent block.
Finalise the reassembly
Coat the junction between the exhaust line and the catalytic converter with exhaust sealant. Screw the two holding screws back in.
You can now finish the tightening of the two holding clamps with the torque wrench.
Then finish the tightening of the catalytic converter on the exhaust manifold on the passenger side with the torque wrench. Do the same on the driver’s side.
Reassemble the different parts
Replace the driveshaft on the front differential and on the transfer case, following the markings you made during disassembly. Then tighten the screws on each side. Finish tightening using a torque wrench.
Brush and grease the location of the metal crosspiece. Replace the metal crosspiece. Then tighten the four screws. Finish tightening using a torque wrench.
Tighten the two Gearbox mount retaining nuts. Finish tightening using a torque wrench.
Tighten the two heat shield retaining screws on the metal crosspiece. You can now lower the jack and put the gearbox assembly on the metal crosspiece.
Put the vehicle back on the ground
Then you can rest your vehicle on the ground. Operation complete.