25% Off Online Orders Over $100. Enter promo code SECRET25 in cart. Restrictions Apply; Certain Items Excluded. Click Here to Shop Now.

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25% Off Online Orders Over $100
Use promotional code SECRET25 at checkout to receive discount Receive 25% off your total purchase of $100 or more of regularly priced in-stock single parts or accessories purchased online. Enter promo code SECRET25 in cart when purchased online to receive discount. Offer is not valid in combination with any other offers, rebates or discounts; not available to Pep Boys' Fleet & Commercial accounts; does not apply to labor, special order merchandise, tires or the purchase of gift cards. Valid online until 2:59 am EST on 5/4/14. Online orders scheduled for in-store pick up must be completed in store by closing on 5/3/14 for discount to apply.

Free Shipping orders over $75
Free Ground Shipping on Ship to Address orders over $75. No code needed. Offer only valid on in-stock merchandise valued at a total of $75, after any discounts have been applied, and before any core charges, shipping charges, fees and taxes have been added. Certain items exceeding weight and size limitations are excluded. See item descriptions for details.

Keep a Well-Tuned Engine For Maximum Performance

"My engine has gone over 45,000 miles without a tune-up and it's still running fine, except it idles a little rough and the gas mileage isn't what it used to be."

True, today's engines are designed to travel farther without major maintenance.

However, this assumes you carefully adhere to the manufacturer's routine maintenance schedule, no matter what your mileage. It also assumes you don't constantly use your vehicle under what car and truck makers describe as "special or harsh circumstances."

Engine Tuning' /><p>These include driving in dusty conditions, weather extremes, towing, and off-road operation. Another performance weakener is the trip to the bank or supermarket that's less than five miles away. Short trips, when an engine barely reaches operating temperature before being shut off, play havoc with engine performance and components. Extensive idling and driving at low speeds for long distances is also detrimental to continued performance capability.</p><p>The

The best way to ensure long engine life is to entrust the care of your vehicle to only highly-qualified technicians. Pep Boys knows your engine like few others. Our technicians are nationally-certified and trusted professionals who understand the complexities of modern engines. They will skillfully perform engine diagnostic service, routine maintenance tune-ups and major performance tune-ups to help ensure your engine performs at its absolute best.

Engine Performance Problems: The Warning Signs

  • Loss of power
  • Drop in gas mileage
  • Knocking when your engine is accelerating
  • Stalling when engine is either hot or cold or when using air conditioning
  • Hard starting, although the battery easily turns the engine over
  • Dieseling (the engine continues to run even after ignition is turned off)
  • Noxious exhaust odor
  • Rough running at any speed
  • Backfiring
  • Engine dash warning lights stay on
Keep a well-tuned engine for maximum performance. Let Pep Boys show you how.