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: The car loses acceleration intermittently

Hello. It would be recommended to have the vehicle looked at by a certified mechanic. They should have the specialty tools and techniques to identify the problem and repair the situation correctly, and avoid any damage or injury. This could...

Q: Car will only drive in reverse or 2nd and 1st

This may be a sign of low transmission fluid or a faulty transmission control solenoid. As you know, automatic transmissions use pressurized hydraulic fluid to change gears. Every time a gear change is required, the car's computer activates a transmission...

Q: Installing performance brakes

Hi, thanks for writing in. It all depends on the performance parts that are being installed. You suggest following the recommendations of the kit manufacturer. If the rotors and pads are the same size as the original equipment, then you...

Related articles

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...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...
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...