Working Hours
  • Mon 8:00AM - 5:30PM
    Tue 8:00AM - 5:30PM
  • Wed 8:00AM - 5:30PM
    Thu 8:00AM - 5:30PM
  • Fri 8:00AM - 5:30PM
    Sat Appointment Only
  • Sun Closed
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419-782-7827 | 1735 Spruce St Defiance, OH 43512

ENGINE MAINTENANCE

Engine maintenance is vital to keep your car or truck operating at peak performance. It also impacts the longevity of your vehicle's engine. Trust the experts at Northwest Automotive LLC to help you protect your investment. Call us at 419-782-7827 or visit our shop in Defiance.

These are some of the engine maintenance services we offer.

Check Engine Light
No one likes to see their car's "Check Engine" light come on. The light could mean a costly problem, like a bad catalytic converter, or it could be something minor, like a loose gas cap. At Northwest Automotive LLC, we can pull the code and diagnose the problem for you. Give us a call at 419-782-7827 or stop by the shop for our expert assistance.

Diesel
Although diesel engines don't require tune-ups and tend to last longer than gasoline engines, they do require regular maintenance. Typical maintenance tasks include:

  • Changing the oil & filter
  • Changing the air filter
  • Changing the fuel filter
  • Bleeding the fuel system
  • Draining the water separators
  • Refilling the urea injection system

You can count on the experts at Northwest Automotive LLC to help your diesel engine last a long time.

Fuel Injection
Fuel injection is a system for admitting fuel into an engine. Since 1990, fuel injectors have completely replaced carburetors as the primary means of getting gasoline into the engine. A fuel injector atomizes the fuel by forcibly pumping it through a small nozzle (under high pressure). Failure of the fuel injection system means poor performance and ultimately destroys the engine. Make sure your vehicle's fuel injection system is maintained properly. For all your fuel injection maintenance and replacement needs, call 419-782-7827 or visit Northwest Automotive LLC today.

Ignition
An ignition system is a system for igniting (using an electric spark) a mixture of fuel and air in a gasoline engine. A properly working ignition system means a properly starting engine and high performance from your car. For all your ignition system maintenance and replacement needs, call or visit Northwest Automotive LLC today.

Ignition Wires & Cables
Ignition cables also known as spark plug wires are an important part of your car's ignition system. They transfer the spark from the ignition coil to spark plugs that ignite the mixture of fuel and air. The mixture starts the engine. Over time, ignition wires and cables get weak and break down. This makes it impossible for the spark to reach the engine cylinders. This results in the engine misfiring. The car will eventually fail to start. If it does start, it will run poorly. Common symptoms of faulty ignition cables and wires are: poor gas mileage, engine misfires, engine light is on, and engine may vibrate. If your car needs new ignition cables and wires, call or visit Northwest Automotive LLC in Defiance, OH 43512. Here, you will have the wires and cables changed by a top-rated mechanic.

Oil, Lube, and Filter
To keep running smoothly, your car highly relies on oil, lube, and oil filters. Oil helps in lubricating, cooling, and cleaning the internal engine components. With time, motor oil becomes contaminated. Your car needs an oil, lube, and filter change every three months (or 3,000 miles). When it is time for a lube, oil, or filter change, take your vehicle to Northwest Automotive LLC in Defiance, OH 43512.

Spark Plugs
A spark plug delivers electric current to the combustion chamber from the ignition system. Spark plugs that haven't been changed for a long time can cause ignition problems. At Northwest Automotive LLC, we have automotive experts who will check and replace your spark plugs. For all your spark plug repair or replacement needs, call 419-782-7827 or visit Northwest Automotive LLC today.



Spark Plug Questions and Answers

How do you know when a spark plug needs to be replaced?
The most common sign a spark plug needs replacing is the feeling that the car's engine is hesitating when accelerating, but other signs may include misfiring at start up, rough idling, sluggish acceleration, declining fuel economy and engine knocking.

What else should I replace when replacing spark plugs?
If you are considering having your vehicle's spark plugs replaced, there's a high probability that your spark plug wires need changing as well. Ignition wires become brittle over time. Old ignition wires can break and cause misfires or declining fuel economy.

Serpentine Belt Question and Answer

How do I know if I need to replace my car's serpentine belt?
If your serpentine belt is failing, you may notice performance issues with your vehicle. The vehicle may frequently overheat. Your air conditioning or power steering may fail to work or not work properly. You may notice your vehicle battery failing to recharge if the alternator is affected by a bad serpentine belt. If you start to notice any of these issues we encourage you to bring your vehicle to Northwest Automotive LLC as soon as possible to avoid bigger problems and breakdown.

Check Engine Light Questions and Answers

What could cause a check engine light to come on?
Come by Northwest Automotive LLC and we can diagnose the reasons for a check engine light turning on. It can range from something serious like a faulty catalytic converter or potential engine failure to something simple like a loose gas cap or the need for a simple 50K or 100K mile manufacturer maintenance check.

Is it okay to drive with the engine light on?
The short answer, "No." The longer explanation is the light may indicate a serious engine failure and continuing to use your car as if nothing is wrong could result in a very expensive repair bill. The check engine light means you should stop driving and have your car looked at as soon as possible by a professional at Northwest Automotive LLC in Defiance.

What is the most common problem with my check engine light?
A loose gas cap is the most common cause of a check engine light coming on. But the best method to determine why the check engine light is on is to have a professional at Northwest Automotive LLC read the diagnostic code in the car's internal OBD computer.

What does a solid check engine light mean?
A steady check engine light indicates a non-emergency issue. Come by Northwest Automotive LLC and we can help.

What does an intermittent flashing check engine light mean?
Flashing check engine lights warn of severe situations requiring immediate attention. Get your vehicle to an auto repair shop as quickly as possible or get it safely parked and call a tow truck to take it to your preferred auto repair shop.

Can I turn off my check engine light myself?
It is a very bad idea to try to resolve a check engine light yourself. The DIY method to turn off a check engine light without a scanner is disconnect the battery cables, wait 1 minute, and reconnect the battery cables. If the underlying issue has been resolved, the light should go off. But modern automobiles rely on battery power to maintain important systems such as the O2 sensor and ADAS systems. By disconnecting the battery, you run the risk of damaging these delicate and expensive to replace computer-driven components. If your check engine light is on come by Northwest Automotive LLC in Defiance. Turning off a check engine light is often inexpensive and simple.

To learn more about our Engine Maintenance services, call us at 419-782-7827 or request a quote by clicking below:


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Discover More About Engine Repair Services At Northwest Automotive LLC in Defiance

Transmission Repair Services
Car & Truck Care Services
Engine Heating & Cooling Services

NAPA Service Assistant


What Our Customers Are Saying

Very happy with the service!!! They came and picked my truck up, repaired my tire, and brought my truck back to me within time frame they stated. Today my tire went low, they worked on my truck immediately. Would recommend them to anyone, they are very friendly and accommodating. 5 star rating from me!!!!

, 12/16/2021

Awesome shop!! Not only was the estimate the lowest I received, the entire exhaust system was replaced (headers on back), the work was completed in under 2 hours. I m a U.S.Army Veteran and my car had a misfire situation going on due to bad coil pack, well Tim & his guys found me a coil pack and put it on NO CHARGE!! I would recommend this shop to any & everyone!

, 10/13/2021

reviewicon

Tim and the guys do great work here and are honest I definitely recommend these guys for any repairs

, 09/28/2021
I have a 2011 Jeep Liberty, the A/C stopped working, so I called up Tim and told him. He said can you bring it in today at 1:00pm? I said yes. So I took it in, they found that all the Freon was out of the unit. So they put more Freon in plus added some dye to find if the system may have a leak. So I paid the bill. Tim said, if you have any further problems bring it back. So the next day I started my Jeep up. The A/C stop working. So I called them back on Saturday. Can you bring it back on Monday at 2:00pm? I replied yes. Returned back to Northwest Automotive. They took my jeep in and recharged the A/C unit, and checked the system for any possible leaks. So Tim filled me in on no signs of dye so go ahead drive it and if any further problems bring it back. So how much money do I owe you? He replied nothing. The next day I drove my Jeep the A/C stop working again. So I called them back and told them. Can you drop it off so we can get to work on it Monday morning. I said yes. So I called them up Monday around noon and asked how are things going with my jeep? He replied that we believe we have found the leak. So he asked you said when it would set over night that the next day it not work? I replied yes. He asked if you don't need your Jeep back today, we will let it set overnight and check and see if it is still working in the morning. So I replied yes. I called them back the next day and asked how are things going with my jeep? Tim replied it is working fine. He asked if I would pick it up later today, l said that is fine because I will not be in town till around 3:30pm. Because I was at work. So went to pick up my Jeep. Tim said I believe the problem was from the low pressure valve. It should be alright. I replied so how much do I owe you. He said nothing, if you have any further problems bring it back. I believe he is a fair and honest person. I will respect that and I will bring him some more business. Thanks again.

, 07/16/2021

Northwest Automotive didn't charge me to look over my Geo Traker, even though I didn't end up having anything done to it. Will be going back to them.

, 04/26/2021

reviewiconLeaf Springs
Undercar Services, near Defiance, OH

Northwest Automotive did it right again. Out read leaf springs on the Firebird and the stance was back where it's supposed to be! Very good job again! Thanks!

, 03/12/2021
  • AERA (Automotive Engine Rebuilders Association)
  • ASE Certified - Automotive Service Excellence
  • BBB Accredited Business
  • NAPA AutoCare Center
  • Jasper Engines & Transmissions
  • Mobile Air Conditioning Society
  • WIX Filters
  • ALL-DATA
  • IDENTIFIX
  • UNOH Alumni - University of Northwestern Ohio
  • Defiance Ohio Police
  • Car Care Aware
  • Call Us For Service: 419-782-7827