A failing catalytic converter can cause a check engine light, reduced power, and emissions problems. At HarrisBoyz Auto in Iowa City, IA, we provide complete catalytic converter diagnostics, repair, and replacement—including theft recovery and anti-theft protection.
What a Catalytic Converter Does
Your catalytic converter reduces harmful emissions from the exhaust system. When clogged or damaged, it can reduce engine performance, cause strong odors, trigger codes (like P0420/P0430), and in extreme cases, lead to overheating or engine damage.
Symptoms of a Bad Catalytic Converter
- Check Engine Light (P0420/P0430
- Sluggish acceleration or power loss
- Rotten egg or sulfur smell
- Drop in fuel economy
- Rattling sounds from under the vehicle
- Exhaust smoke or overheating
- Failed emissions test
Catalytic Converter Services We Offer
- Catalytic converter inspection & diagnostics
- Backpressure testing
- OEM catalytic converter replacement
- EPA-approved aftermarket converter replacement
- Exhaust pipe & flange repair
- O2 sensor testing & replacement
- Heat shield replacement
- Insurance estimates for catalytic converter theft
- Catalytic converter anti-theft plates & shields
Catalytic Converter Theft Protection
Catalytic converter theft is increasing in many areas. We install:
- Anti-theft plates and shields
- Welded protection cages
- Etching / ID marking
- Clamp-on protective barriers
Why Choose HarrisBoyz
- Experienced emissions and exhaust technicians
- EPA-compliant catalytic converters
- Transparent pricing and honest recommendations
- Same-day service available for many replacements
- Warranty on parts and labor
- Trusted locally in Iowa City, Coralville, and North Liberty
Our Repair Process
- Scan for codes like P0420/P0430
- Inspect converter, O2 sensors, and exhaust system
- Backpressure test to confirm blockage or failure
- Provide repair/replacement options with pricing
- Install EPA-compliant converter (OEM or aftermarket)
- Clear codes & road test the vehicle
- Final exhaust & emissions check
Cost Expectations
Catalytic converter costs vary widely depending on the vehicle and whether it’s OEM, aftermarket, or theft-related. Some converters are inexpensive; others—especially on hybrid or late-model vehicles—can be costly. We always provide an estimate before starting work.
Serving Iowa City & Surrounding Areas
We proudly serve Iowa City, IA, Coralville, North Liberty, Tiffin, Riverside, Solon, and University Heights.
Schedule Catalytic Converter Service
If your catalytic converter is failing—or if it’s been stolen—schedule service today. Book online or contact us for availability.
Frequently Asked Questions
A: It’s not recommended. A failing converter can restrict exhaust flow, reduce power, overheat, or break apart internally.
A: Misfires, oil burning, coolant leaks, contamination, or physical damage from road debris or theft.
A: Many catalytic converter replacements can be done the same day.