Why does the check engine light in my J20 turn on when I start my car?

It’s usually normal for your check engine light to turn on upon ignition. This is just your J20 testing its circuits. The dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.

Why does my Jeep engine sound different?

Strange engine sounds can be a sign something’s off in your Jeep J20. Tapping or knocking could mean you're low on oil. Whistling sounds could mean you have an intake leak or misaligned belt. Squealing may be caused by a loose fan belt, and grinding might be coming from the brakes, not the engine.

What could damage a Jeep engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your Jeep J20 engine?

Certain driving habits can damage your engine and should be avoided. These habits include 'running on fumes,' revving your engine while the vehicle is in Park, or pushing 'the pedal to the metal' before the engine has warmed up. Steer clear of these habits to help protect engine performance and efficiency.

Can I add water to my Jeep J20 radiator?

Only in emergencies. A 50/50 mix of coolant and water (or a pre-mixed) coolant is recommended. However, if you must keep driving when you're out of coolant, it's better to drive with water in your coolant reservoir than nothing.

Why did my J20 engine suddenly stop?

Your J20 car engine could stop suddenly due to low fuel, electrical issues, overheating, a faulty ignition system, mechanical troubles, or sensor problems.

Who can repair my Jeep J20 engine?

Your local Firestone Complete Auto Care fixes Jeep J20 engines. Book an appointment today! We have thousands of locations across the country.

Reliable Repairs for 1986 Jeep J20 Engines

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1986 Jeep J20 Trim Options

Select your Jeep J20 trim level to learn more about Jeep-recommended engine repair. Even Jeep J20 parts will get older and change.

V8/5.9L

1986 Jeep J20 Repair

Nothing lasts forever. Even your Jeep J20’s engine parts and components will change. When something breaks, we're ready. Click on a repair below to learn more about 1986 Jeep J20 repairs.

We Know Jeep J20 Engines

The Jeep J20 is respected for its reliability. You probably thought about that when you got it. However, the wear-proof engine has yet to be invented! Things can go wrong on the road. When they do, you might find yourself searching for 1986 Jeep J20 engine repair or replacement parts. That’s where Firestone Complete Auto Care comes in. We've serviced millions of vehicles since 1926, and our professional technicians are trained to service Jeep J20 engines. Schedule a courtesy inspection at the first sign of engine trouble. Firestone Complete Auto Care offers both trustworthy and affordable engine repairs.

Check Engine Light on 1986 Jeep J20

As soon as your J20 check engine light turns on, it’s time to get an expert’s opinion. A check engine light that’s on or flashing could be a symptom of a serious problem in your car’s starter, Causes may include a faulty oxygen sensor, bad spark plug, a clogged catalytic converter, or a leak in the engine vacuum, to name a few potential sources. Bring your J20 to Firestone Complete Auto Care to get computerized diagnostics and our expert techs will get the root of the problem. engine rattling, oil leaks, or a sinking feeling that something’s wrong.

Engine Repairs for Your 1986 J20

If your 1986 J20 engine needs repairs, our expert techs will let you know what needs to be done and why before they get started. We don't start working until we have your approval. If a repair isn’t urgent right now, we’ll let you know. But if immediate repairs are necessary for your safety, we’ll make sure that's clear, too. We seek to give you all the info you need to make a smart decision about our services. Choose Firestone Complete Auto Care for Jeep J20 engine repairs and you can feel good knowing that we only use Jeep-compliant replacement parts such as the cambelt, motor oil seal, ignition coil, or another part.

1986 Jeep J20 Engine Q&A

Why does the check engine light in my J20 turn on when I start my car? It’s usually normal for your check engine light to turn on upon ignition. This is just your J20 testing its circuits. The dash light shouldn't stay on. If it does, you might want to bring your vehicle in for service.
Why does my Jeep engine sound different? Strange engine sounds can be a sign something’s off in your Jeep J20. Tapping or knocking could mean you're low on oil. Whistling sounds could mean you have an intake leak or misaligned belt. Squealing may be caused by a loose fan belt, and grinding might be coming from the brakes, not the engine.
What could damage a Jeep engine? [ordered-list-1-item-3-1]Are you unknowingly damaging your Jeep J20 engine? Certain driving habits can damage your engine and should be avoided. These habits include 'running on fumes,' revving your engine while the vehicle is in Park, or pushing 'the pedal to the metal' before the engine has warmed up. Steer clear of these habits to help protect engine performance and efficiency.
Can I add water to my Jeep J20 radiator? Only in emergencies. A 50/50 mix of coolant and water (or a pre-mixed) coolant is recommended. However, if you must keep driving when you're out of coolant, it's better to drive with water in your coolant reservoir than nothing.
Why did my J20 engine suddenly stop? Your J20 car engine could stop suddenly due to low fuel, electrical issues, overheating, a faulty ignition system, mechanical troubles, or sensor problems.
Who can repair my Jeep J20 engine? Your local Firestone Complete Auto Care fixes Jeep J20 engines. Book an appointment today! We have thousands of locations across the country.