» View Question
flyintortuga

flyint ... 1/1/2013

2000 Mercury Grand Marquis LS 8 Cyl 4.6L

Engine

Why is my car sputtering and stalling?

Ran out of gas a few days ago and the day after car stalled Out on the freeway I put gas and change the fuel filter and added fuel injector cleaner and it Ran fine for about 12 hours and then started doing it again

1 Answer


Jimm

Jimm 1/1/2013

First step - have the check engine light or stored fault codes scanned - for free - at any local auto parts store; Advance Auto, Auto Zone, NAPA. Then, post a reply as 'add answer' for more assistance.

Possible Causes of Engine Hesitation or Stumble:

Dirty fuel injectors (cleaning the injectors often fixes this)
Dirty air filter (change filter)
Dirty / clogged fuel filter (change filter)
Bad MAP (manifold absolute pressure) sensor
Bad TPS (throttle position) sensor
Bad or dirty MAF (mass airflow) sensor
Low fuel pressure (leaky fuel pressure regulator or weak fuel pump)
Vacuum leaks (intake manifold, vacuum hoses, throttle body, EGR valve)
Bad gasoline (fuel contaminated with water or too much alcohol)

Sometimes, what feels like a hesitation is actually ignition misfire rather than lean misfire. The causes of ignition misfire may include:

Dirty or worn spark plugs
Bad plug wires
Weak ignition coil
Wet plug wires

Reply
0

Answer this question

( characters left)

Follow Question

what's this?
advertisement
advertisement