2CarPros - Car Questions & Answers

1987 Chevrolet Caprice Repair Question


Topics covered: Sensor, Fuel pressure, Abs.
Mileage: No information provided.

Asked on August 29, 2009

1987 Chevy Caprice my car loses accelration

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 Asked by HeavyChevy009

Answer

Replied on 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

Tiny Answered by rasmataz
68 questions asked