The MAP sensor - another frequent cause of stalling or non-starting. This measures the air pressure in the manifold. You can test it - if your car won't start, just unplug the electrical connection from the MAP sensor. If it starts, replace the sensor. MAP sensor details. (It may act as though the fuel pump is not working properly - starting, then quickly dying).
Check the vacuum line on the map sensor for dry rot or other damage. If vacuum line on map sensor is in good condition the map sensor itself may be faulty and need replaced. The car will run with either a faulty map sensor or vacuum line. It would just run badly or stall. It might throw a code but not all the time. Also could be an ignition system problem or spark plugs needing replaced or the oxygen sensor may be faulty.
Hesitation can be caused by several things: 1. A faulty throttle position sensor might cause hesitation. 2. A faulty MAP or MAF sensor might also cause hesitation. 3. A problem with the engine control module might cause hesitation.
p0171 fuel system lean bank 1 Causes include faulty oxygen sensor, weak fuel pump, plugged fuel filter, low fuel pressure, misfire, faulty map sensor, etc.
sound like the map sensor is reading faulty, it"s function is to adjust the air to fuel ratio and spark timing,, this would cause stalling problems. First i assumed that you checked or replaced the fuel filter. and that your fuel pressure regulator. is not leaking by one you
Yo don't. It must be replaced if faulty.
YES IT COULD BE , BUT IT MAY NOT BE THE ONLY PROBLEM. YOU NEED TO HAVE THE CAR SCANNED TO SEE IF THERE IS ANY OTHER PROBLEMS BEFORE REPLACEING THE MAP SENSOR
If the vehicle has a missfire or is hard onstarting the problem may be the MAP sensor To determine if this unit is faulty follow the following instructions Remove the existing MAP sensor and replace with a new one If the fault is cured then the MAP sensor was the problem If not start to replace all fuel system components one at a time until the problem is cured
It uses a MAP sensor.It uses a MAP sensor.
If that's going on there is some kind of malfunction somewhere. Check for a dirty air filter, sticking TBI injector, faulty throttle position sensor or possibly some other sensor failure. New answer; Need to check the fuel pressure regurlator. A shorted or grounded Coolant sensor can cause it to run rich. MAP sensor can cause it to run rich also. Hope we both helped.
if it wont run when it gets warm it might also be a faulty crank sensor. and it wont always trigger a check engine light mine didn't, well it did but it threw a code for an egr valve so I wasted $220 replacing the egr valve to discover the problem was a $20.00 crank sensor. Have you checked the air filter? Sometimes an old air filter will cause problems that show up as a faulty map sensor.
Typical causes would be: -faulty throttle position sensor -faulty accelerator position sensor (if drive-by-wire) -faulty throttle body (if drive-by-wire) -restricted exhaust catalyst or other exhaust restriction -restricted fuel filter -poor fuel quality -floor mat interfering with accelerator pedal operation -overdue for tune-up (gasoline engine only)-ignition timing fault -knock sensor inoperative -false low MAF sensor reading -false MAP sensor reading -DPFE sensor or hoses bad (Ford only) -clogged air filter
no it only helps to controle the air