Q: Stalling,bad fuel mileage,won't start without Acceleration, rough idling.

asked by on

My land Rover is getting MAF/MAP codes I have replaced the MAF sensor and cleared codes I am still getting same codes. My land Rover is not equipped with a MAP sensor. I am having rough idling, stalling ,poor gas mileage 9 mpg , will not start with out acceleration, replaced fuel pump crankshaft position sensor and transfer case module. Wondering if it's the throttle body sensor.

My car has 94000 miles.
My car has an automatic transmission.

This may be related to a couple of different things. I would recommend checking the idle air control valve/module which works similar to the MAF sensor in that it regulates air intake as it is mixed with fuel prior to being injected into the motor. When this is not working correctly this will cause an imbalanced air/fuel mixture causing the motor to stall or idle rough. I would also check the catalytic converter to make sure it is not clogged as this could cause poor fuel mileage as well as poor running conditions. I would suggest having an expert from YourMechanic come to your home to perform a thorough diagnosis of your land rover, and make necessary repairs.

Was this answer helpful?
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. Stalling,bad fuel mileage,won't start without Acceleration, rough idling.

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: Loses power 60 mph

Hi! I believe your problems are unrelated and not caused by one another. I think it's more so awkward timing that both present problems than anything else. You may be in need of a tune-up. I suggest that you have...

Q: Check engine light on & OBD #P0171

P0171 for your car is "system too lean." The most common cause is a vacuum leak and it can come from a leaky hose or a leaky gasket. However, I did a quick search and found someone on the forums...

Q: I have a 1996 infinity Q45 and the ECM (computer) isn't working. I've been looking on the internet to find a new one.

Hi there. When looking for an ECM (computer) for your vehicle, as long as the computer is the same design and has the same harness connections it will adapt to your vehicle. The only thing is, you will have to...

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...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
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...