Skip the auto shop - Our mechanics make house calls

Q: 2002 Frontier acceleration issues

asked by on

My husband has a 2002 Frontier, which has a problem of not wanting to go over 65 and sometimes it won't go over 45 mph. When we push the gas, it doesn't move. When we let it off, it goes. Sounds like an EGR problem but no EGR.

On those, I can just about guarantee you that it’s a clogged up catalytic converter. It was a design flaw on those vehicles. Have the catalytic converter pressure tested. When they clog up, the gas can’t escape the car so it can only go so fast as the engine can’t spin any faster because it can’t pump any more gas out. There is no place for it to go. You will need to have it pressure tested to see if it’s the catalytic converter.

Also consider that it is a V6. Those have two catalytic converters and they cost a whole bunch of money but they often need replacement. If you need help with this, a technician from YourMechanic can inspect your acceleration issue and replace your catalytic converter for you if necessary.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. 2002 Frontier acceleration issues

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Steering wheel vibrations can be seen and felt

Hi there. If the steering wheel is vibrating at this speed and it is occurring whether you apply the brakes or not, then you more than likely have a tire that is failing. When a tire begins to separate, this...

Q: Hello

If you are inquiring about a warranty on a YourMechanic repair, a basic 12-month/12,000-mile (whichever comes first) warranty applies, subject to certain conditions. If any defects in workmanship arise within that period, we will work with you to resolve the...

Q: my tbi injectors dont inject gas

Hi there. If you accidentally put the terminals on the wrong posts when hooking up the battery, then there could have been all kinds of issues that fail within your vehicle. The tbi injectors circuit may have blown the fuse....

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.