1998 Chevy Monte Carlo Slow Acceleration

SHANNONV

MEMBER
1998 CHEVROLET MONTE CARLO
6 CYL
FWD
AUTOMATIC
149,005 MILES

All of a sudden my Z34 will not accelerate properly. It acts like I am barely pushing on the accelerator pedal while I actually have it on the floorboard! I have had the Catalytic Converter checked (twice) and it is good. My RPM's are not running high nor does the engine sound like it is 'straining', but my gas mileage is horrid. I have not had an Engine Light come on and would like to know where to turn now before I get rear ended in traffic!
Thanks

2 Replies

RASMATAZ

MECHANIC
75,992 POSTS

Hi ShannonV, Welcome to 2carpros and TY for the donation

Possibilities here: 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
Knock 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.

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Wednesday, July 28th, 2010 AT 7:04 PM

SHANNONV

MEMBER
1 POST

Thank you for your reply and you are welcome for the donation. I have found the problem and it was none of the items in your list of suggestions as I saw the same answer posted to an earlier question submitted by someone else and had already ruled the majority of them out.

The problem is a broken accelerator cable, which for some reason GM has obsoleted and I had to have it ordered from a company back east. In the week of wait time, a zip tie is working just fine to hold it in place and the car is driveable.

Sometimes it's a simple fix and I'm glad that my local mechanic nailed the problem in less than 2 minutes when I told him what my car was doing.

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Thursday, July 29th, 2010 AT 11:05 AM