1998 GMC Jimmy Tune Up?

2YNG2BTHSOLD

MEMBER
1998 GMC JIMMY
6 CYL
4WD
AUTOMATIC
106,000 MILES

I have owned this car since 2003; it has been great with very few issues. I have the oil changed every 3-4000 miles and once a year I have all the fluids changed. Have had one complete brake job and need to charge the AC once a year. But my question is:

Shouldn't I be doing more? I've noticed lately it isn't as quick to respond when I hit the gas pedal so was thinking maybe I need to have it 'tuned up". Being a woman, all I really know how to do is put gas in it and take it to the car wash.

Thanks.

1 Reply

RASMATAZ

MECHANIC
75,992 POSTS

Lack of acceleration, chugging, hesitating, bogging etc. Could be caused by one of the following below:

Possibilities: Inspect and test all the following listed below:

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Crankshaft position sensor
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking or defective fuel pump.
False air leakage.
Fuel contamination.
Foul/defective spark plugs.
Open spark plug wires.
Ignition coil/Coil packs defective.
Incorrect ignition timing.
Cap and rotor.

Note:If it doesn't apply disregard it.