Dear MW: I have a 2000 silverado with 5.3 engine. I had it to
a shop for engine light. code p0135 and misfires on #3 and 7. They
replaced the oxygen sensor and plugs. light still on. Also does not
accelerate as good as it used to. Can you help?
MW:
Yes, i think I can help. From my experience with that engine/truck, your problem leads me to
believe that you may have a plugged/restricted catalytic converter on the dr. side.
Backpressure test is the only way to be 100% sure. Have seen this condition before.
The entire assembly will have to be replaced.
It is a 'y' pipe assembly.
Check with your dealer if you have less than 80,000 miles because it should
be covered under factory warranty.
Back
a shop for engine light. code p0135 and misfires on #3 and 7. They
replaced the oxygen sensor and plugs. light still on. Also does not
accelerate as good as it used to. Can you help?
MW:
Yes, i think I can help. From my experience with that engine/truck, your problem leads me to
believe that you may have a plugged/restricted catalytic converter on the dr. side.
Backpressure test is the only way to be 100% sure. Have seen this condition before.
The entire assembly will have to be replaced.
It is a 'y' pipe assembly.
Check with your dealer if you have less than 80,000 miles because it should
be covered under factory warranty.
Back
| Was this information helpful? Is this what you have been searching for? Why not make a small donation to help keep us going. The guys work hard everyday to try and help people like you searching for help on the web. LEARN HOW |
Other related articles:
A customer has already paid for this answer. This is one of our most popular answers. To view it, CLICK HERE to leave a $5 tip/donation. The link to the technicians answer will be E-mailed after completion. |