Q: Acceleration problems

asked by on July 31, 2017

My 99 nissan frontier lacks power runs rough cant drive it wont go over 30 mph replaced timming belt thermostat belt tentioner warerpump sparkplugs what do i do next is it 02 sencer or tps sensor crankshaft senser iddle air control valve dont have alot of money but need it running before replacing timming was driving it and pulled over it wouldnt go over 30 started smoking and engine wasglowing red hot passengerside side by o2 sensor what do i replace next

Catalytic Converter Replacement $288.41 - $1959.69 Get a Quote

Hi There, What you are describing sounds like you may have a clogged or damaged catalytic converter. The catalytic converter converts toxic exhaust gases into less harmful pollutants that are suitable to be expelled into the atmosphere. When the catalytic converter is clogged, this causes these gases to be backed up into the exhaust system not allowing the engine to breathe properly. When this happens, the engine is forced to work much harder to expel these gases. This often results in the engine bogging down, hesitating, shaking and causing very poor fuel economy. This should also cause a check engine light to come on as the O2 sensors should be reading the incorrect amounts of oxygen in the exhaust gases if this is your problem. I would recommend having an expert from YourMechanic come to your location to diagnose and inspect your vehicle.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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


Experienced Mechanic?

Earn up to $70/hr

What others are asking

Why am I using so much oil?
From the sound of this, it seems that your engine is indeed burning oil. In order to investigate where the missing oil is disappearing, I would recommend asking the Toyota dealership for an oil consumption test. An oil consumption test...
Is Brand-Name Gasoline Better?
Brand-name gasoline isn't necessarily better than independent label gasoline. Gasoline is gasoline. That being said, name-brand fuel (https://www.yourmechanic.com/article/which-gas-stations-have-the-best-quality-gas) does have some attributes and qualities that independent fuelers don't have. Let me explain. There actually is a difference in gasoline. That...
How do I make a phone call with Bluetooth?
If your phone is Bluetooth (https://www.yourmechanic.com/article/5-essential-things-to-know-about-your-car-s-bluetooth) capable and it’s paired with your car’s audio system, you can use the hands-free system to accept or make phone calls. Here’s how to do it: Turn the ignition to on. Make sure your...
EGR codes P0489 and P042E.
These codes are for EGR low flow and and a EGR valve being stuck open. Sounds to me like carbon buildup has wedged the valve open and further blocked flow through it. Have a certified mechanic, like one from YourMechanic,...
Car making noise and trying to stall
The information you have provided for your Saturn is limited so it is difficult to point you in the right direction. Sometimes when a vehicle has an intermittent problem, such as noise coming and going from your Saturn, the problem...
is the crv better than hyundai 2009
Hi there. I like the Honda CRV since I have a 1998 Honda CRV EX AWD that I have owned since 2005 and have had no major problems. I just recently passed the car down to my daughter for her...
My check engine light came on after getting a jump start from AAA and when i got home i turned the car off and the light stays on
Hello. From what you describe it would appear that your vehicle is experiencing more than one issue. P2070 is the code indicating the intake manifold tuning valve is stuck open. This may be linked to your performance issue. Dark smoke...
Where do i fill up the radiator on a H2 Hummer 2006
Coolant on your vehicle should be added to the reservoir that is located on the passenger side of the engine compartment. It will have a cap on top, that can be removed when the engine is cool, and allow for...
Looking to purchase a car with 200,000 miles on it. The dealer said they had it serviced and can show receipts 2002 Chevrolet Monte Carlo
Hello - while it is always good to know (and verify) continuous, appropriate service on any used vehicle you might purchase, it is still a good idea to have an experienced technician look the vehicle over for items that may...

Related articles

How to Transfer a Car Title in Montana
Montana Montana requires that all vehicles in the state have a title in the name of the owner. When ownership changes, either through a sale, gifting, inheritance, or through a simple name change, the title needs to be transferred. The...
How to Apply Reflective Tape to Your Car
Applying Applying reflective tape to your car or truck is an inexpensive way to customize (https://www.yourmechanic.com/article/how-to-customize-a-car) it, allowing it to stand out from the crowd. The process is also simple enough that most people can do it themselves, saving the...
5 Best Pressure Washers for Cleaning your Car
Pressure washing your car with any of these 5 products gives you a fast, clean, and inexpensive car wash every time.