Engine Diagnostics and Performance
Your vehicle’s engine management system monitors performance to detect potential issues. A check engine light or reduced power output could indicate a problem. Our expert diagnostics pinpoint the issue, ensuring your engine runs at peak efficiency and reliability.
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Description of Engine Diagnostics and Performance
Every vehicle built since 1996 has been equipped with an On-Board Diagnostics System that monitors engine performance. Discrepancies in performance levels are reported through your vehicle’s computer system. Once the “check engine” or “service engine” light is displayed, your next step should be to seek out an engine diagnostic service or an engine tune-up. Engine diagnostics allow our staff to gather helpful information about the operating condition of your engine. The insights obtained during an engine diagnostic will determine the extent of suggested engine repairs. The most common diagnostic trouble codes are generated in response to malfunctions in the powertrain. Ultimately, regular engine tune-ups are necessary to optimize engine performance. A tune-up is also one of the most effective ways to prevent unexpected engine trouble. During an engine tune-up, our staff may replace the spark plugs, spark plug wires, air filter, fuel filter, and distributor cap and rotor in your vehicle. Our experts will also check emission levels, fuel lines, and belts and hoses. Engine diagnostics and regular engine tune-ups can help extend the life of your vehicle and improve the health of your engine.
Benefits of Engine Diagnostics and Performance
While regular engine maintenance will help ensure that your engine always performs at peak conditions, there are also signs you can look for that indicate an engine repair service is needed. The “check engine” or “service engine” light is a sure sign that your engine should be looked at by an expert sooner than later. Most of the time, your vehicle’s On-Board Diagnostics System will detect an engine issue and store the corresponding repair code, which can be accessed by a member of our service staff. Slow-cranking, rough idling, stalling, knocking, or pinging while accelerating are all signs that you should seek engine repairs or engine diagnostics to determine the full extent of your engine trouble. A decrease in gas mileage and detectable loss of power during acceleration are also signs of an impending engine tune-up or engine repair service. Engine warning lights help alert drivers to minor issues before they become major repairs. Be sure to follow up with our staff once your vehicle's On-Board Diagnostics System detects a problem with your engine.
JR's Speed & Tire Shop proudly serves the Engine Diagnostics and Performance needs of customers in Manchester, NH, Auburn, NH, Bedford, NH, and surrounding areas.
Areas Served : Manchester, NH | Auburn, NH | Bedford, NH | and surrounding areas
Exhaust System Repair
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Improve fuel efficiency and reduce emissions with expert exhaust system repair.
Starting, Charging & Batteries

Ensure reliable vehicle starts with expert battery and charging system services.
Roadside Assistance

Get back on the road quickly with our reliable roadside assistance services.
Preventive Maintenance

Stay ahead of costly repairs with routine preventive maintenance services.
Lube, Oil & Filter Change
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Protect your engine with regular oil changes and filter replacements.
Cooling System Repair
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Keep your engine from overheating with professional cooling system repair and maintenance services.