Skip the auto shop - Our mechanics make house calls

Q: 99 Dodge Ram 1500 gets gutless around 55

asked by on

I've got a '99 Dodge Ram 1500, 5.2. It has normal power but around 55 it starts to get gutless. Could it be the catalytic converter?

It certainly could be. It’s a very common thing that would happen with the catalytic converter. Often, it is the catalytic converter or the fuel pump. You can have them both pressure tested. For the catalytic converter, I’ve got a video that shows how to check it.

Gauges are hooked up before and after the catalytic converter. If there is 5 pounds of pressure before the catalytic converter, and hardly anything after the it, then the catalytic converter is clogged and needs replacement.

The fuel pump itself, if it’s bad, can be pressure tested. They are the other way around. They are supposed to have a certain amount of pressure and if they have less pressure then they are no good. If you need help with this, a technician from YourMechanic can inspect the car for loss of power. If necessary, they can replace the fuel pump or catalytic converter if they are faulty.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: Check Engine Light on and off, reader gives P0446 error 1999 Toyota Corolla

Hello - the P0446 code is an indication that the evaporative emissions purge valve electrical circuit has had a loss of electrical power to the vent valve that allows fresh air to enter the evap cannister. This could be a...

Q: Code p0421

Are there other codes set? This code, by itself, P0421 indicates that the engine management system detected the catalytic converter is performing below expected standards. This means the engine is sending contaminants (unburned fuel, oil fumes, etc.) down the exhaust,...

Q: Clicking noise in the engine, been going on for a while

Your truck most likely has an internal engine issue that is just starting to present itself. Abnormal noises, whether from your refrigerator, engine or even your plumbing can be an indication that repairs are needed. In the case of your...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...