Lost power while driving

Good morning,

This could be a couple things.

https://www.2carpros.com/articles/engine-has-low-power-output

I would check the fuel pressure as the fuel pump may be failing by not providing enough fuel to the rail.

https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

I would have the back pressure tested for the exhaust to see if the catalytic converter could be clogged, not allowing the engine to breathe.

https://www.2carpros.com/articles/how-to-test-a-catalytic-converter

Roy

WARNING: Do not smoke, carry lighted tobacco or open flame of any type when working on or near any fuel related component. Highly flammable mixtures are always present and may be ignited, resulting in possible personal injury.

CAUTION: Fuel supply lines will remain pressurized for long periods of time after engine shut down. This pressure must be relieved before servicing of the fuel system is begun. A valve is provided on the throttle body for this purpose. Remove the air cleaner and relieve system pressure by using Rotunda pressure gauge tool T80L-9974-A or equivalent and drain the system through the drain tube.

REMOVAL

1. Place vehicle on hoist, do not raise.
2. Perform fuel system release procedure.
3. Drain fuel from fuel tank.
4. Raise vehicle on hoist. Use proper vehicle lifting procedures.
5. Remove fuel tube clips and retainers.
6. Disconnect supply line and return line fittings.
7. Disconnect fuel pump module electrical connector.
8. Remove any dirt that has accumulated around the fuel pump module so that it will not enter the fuel tank during removal and installation.
9. Remove six bolts from around perimeter of fuel pump module.
10. Remove fuel pump module.

REMOVAL
1. Raise vehicle. Use proper vehicle lifting procedures.
2. Remove the retaining bolts at each three-way catalytic converter flange.
3. Remove the three-way catalytic converter to exhaust manifold retaining nuts.
4. Slide the exhaust inlet pipe rearward until the three way catalytic converters can be removed. It may be necessary to obtain sufficient clearance to separate the three way catalytic converter at exhaust manifold connection(s).
5. Discard exhaust converter outlet gaskets and any damaged parts.

INSTALLATION
1. Remove exhaust converter outlet gasket material from exhaust inlet pipe and the three way catalytic converters.
2. Position the three way catalytic converters to the exhaust manifolds. Loosely install retaining nuts.
3. Install new exhaust converter outlet gaskets between the three way catalytic converters and exhaust inlet pipe flanges. Position the exhaust inlet pipe flange to the three-way catalytic converter outlet flange and insert new retaining bolts.
4. Alternately tighten the three way catalytic converter to the exhaust inlet pipe flange retaining bolts to 34-46 Nm (26-33 lb ft).

NOTE: Alternate tightening of the joint fastener is required to provide uniform clamping. This will prevent joint distortion, a major cause of system leaks and misadjustment.

5. Align the system to proper clearance specification.
6. Alternately tighten the exhaust manifold nuts to 34-46 Nm (26-33 lb ft).
7. Check the system for leaks.
8. Lower vehicle.

No, they will not cause a low power issue at all.

Roy

Smoke comes from either burning oil or coolant or it may be running rich.

https://www.2carpros.com/articles/engine-black-smoke

https://www.2carpros.com/articles/blue-smoke-from-engines-exhaust

https://www.2carpros.com/articles/white-smoke-or-steam-coming-from-the-exhaust-pipe

Roy