Mechanics

CHEVY MY CAR LOSES ACCELRATION

1987 Chevrolet Caprice

Engine Performance problem
1987 Chevy Caprice V8 Two Wheel Drive Automatic 17000 miles

my car losses accleration going up hill, it wont pick up speed until im back on flat land. We checked and it wasnt the fuel filter or catyltic converter
Avatar
HeavyChevy009
August 29, 2009.



Dirty fuel injectors (cleaning the injectors often fixes this).
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

Rasmataz
Aug 29, 2009.