» View Question
Willie

Willie 7/18/2010

1988 Chevrolet Camaro Base 8 Cyl 5.00L

Engine

Why does my car hesitate when I step on the gas

I have change both plugs and spark plug wires

2 Answers


wb94509

wb94509 12/24/2012

Could be your MAP sensor if it has one, and possibly dirty fuel injectors if its fuel injected.

Reply
0
Jimm

Jimm 12/26/2012

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