Q: Nissan Altima 2.5 now stalls when put in gear. Could it be gas n dirty plugs related?

asked by on

Engine has started to stall each time I put in drive and when I come to a stop sign. Could this be fuel and or dirty plugs related? If so would premium gas and fuel cleaner help? Should I not start with a fuel system cleaner before going to air leaks? There are no codes on the car.

My car has 80000 miles.
My car has an automatic transmission.

Hi There, This may be a sign of a faulty MAP sensor as the vehicle responds adversely to a load put on the motor (i.e. putting it in gear, turning on AC or engaging the brakes). The Manifold Absolute Pressure (MAP) sensor senses engine load and generates a signal that is proportional to the amount of vacuum in the intake manifold. The engine computer then uses this information to adjust ignition timing and fuel enrichment. When the engine is working hard, intake vacuum drops as the throttle opens wide. The engine takes in more air, which requires more fuel to keep the air/fuel ratio in balance. When the computer reads a heavy load signal from the MAP sensor, it adjusts the fuel mixture to slightly more rich than normal so the engine can produce more power. The computer will then retard (back off) ignition timing slightly to prevent detonation that can damage the engine and decrease performance. This may also be caused by other closely related components such as a dirty or failing mass air-flow sensor, a faulty throttle position sensor or potentially a vacuum leak. I would recommend having an expert from YourMechanic come to your location to diagnose and inspect your vehicle.

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. Nissan Altima 2.5 now stalls when put in gear. Could it be gas n dirty plugs related?

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: Car will not crank or turnover

Check for continuity in the fuse block that is adjacent to the positive battery terminal. The block will sometimes corrode (due to its proximity to the battery) causing a no start condition. The blocks are replaceable as a unit. Once...

Q: All warnings lamps are shawn in dashboard, and the gauges the acceleration and rpm are on 0 , also

It sounds like you may have a dashboard integration unit failure, or a fault within the electrical control unit (ECU). It's also possible that the instrument cluster itself is faulty. Have the vehicle scanned for diagnostic trouble codes (DTCs)...

Q: Help! P0138 came back after I put engine cleaner in my tank and have replaced the entire exhaust system from headers to muffler.

The code P0138 is on for two possible different situations. Either the oxygen sensor has shorted out on the exhaust system or the wiring from the battery to the sensor has a short or break in it. Check the oxygen...

Related articles

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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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...