Catalytic converter replace or clean

BEBOBEBO

MEMBER
2009 FORD ESCAPE HYBRID
2.5L
4 CYL
4WD
AUTOMATIC
144,000 MILES

Hi, I took my car today to replace the defected EGR with new one as it caused check engine and code P0400. I did this and check engine disappeared, but he told me the cause of defected EGR is bad catalytic converter. I plugged my own obd2 tool and this support only graph for o2 sensor bank1 s2.
Which showed the graph down in attached picture. What is your opinion?
If it is bad what do you advise? To clean it? Can be cleaned or not? As you know the cost of new one is above $900.00 in my country.
Thanks lot.

Image (Click to make bigger)

1 Reply

ASEMASTER6371

MECHANIC
52,797 POSTS

Good evening.

Yes, based on the graph, the converter is bad. The graph should be almost a flat line. When it goes up and down like that, it is not processing the faes as it should.

As far as the EGR, was the old one melted?

No, the converter is about $500.00 to $600.00 from Walker. I attached a picture from Rockauto for you of the part.

Roy

Catalytic Converter - 2.5L Manifold, Hybrid

Removal

1. With the vehicle in NEUTRAL, position it on a hoist.

2. Remove the exhaust intermediate pipe. For additional information, refer to Exhaust Intermediate Pipe - 2.5L, Hybrid See: Exhaust Pipe > Removal and Replacement > Exhaust Intermediate Pipe.

3. Remove the 2 exhaust bracket bolts.

4. Disconnect the Heated Oxygen Sensor (HO2S) and the Catalyst Monitor Sensor (CMS) electrical connectors.

5. Remove and discard the 7 catalytic converter manifold nuts.

6. Remove the catalytic converter manifold from the vehicle.
Discard the catalytic converter manifold gasket.

7. Remove and discard the 7 catalytic converter manifold studs.

8. Clean and inspect the catalytic converter manifold.

Installation

1. Install the 7 new catalytic converter manifold studs.
Tighten to 17 Nm (150 lb-in).

2. NOTICE: Failure to tighten the catalytic converter manifold nuts to specification before installing the converter bracket bolts will cause the converter to develop an exhaust leak.

NOTICE: Failure to tighten the catalytic converter manifold nuts to specification a second time will cause the converter to develop an exhaust leak.

Using a new gasket, install the catalytic converter and the 7 exhaust manifold nuts. Tighten in 2 stages in the sequence shown.

Stage 1: Tighten to 47 Nm (35 lb-ft).

Stage 2: Tighten to 47 Nm (35 lb-ft).

ImageOpen In New TabZoom/Print

3. Connect the HO2S and the CMS electrical connectors.

4. Install the 2 exhaust bracket bolts.
Tighten to 25 Nm (18 lb-ft).

5. Install the exhaust intermediate pipe. For additional information, refer to Exhaust Intermediate Pipe - 2.5L, Hybrid See: Exhaust Pipe > Removal and Replacement > Exhaust Intermediate Pipe.

Images (Click to make bigger)