2001 Chevy Cavalier

BIGTEATS 1

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2001 CHEVROLET CAVALIER

Engine Performance problem
2001 Chevy Cavalier 4 cyl Front Wheel Drive Manual

CAR IS MISFIRING ON 1&4 CYL. COMPRESION 210 ALL 4 CYLS, REPLACE PLUG, WIRES, COIL, MODULE, PCM, FUEL REGULATOR, O2S, MAP, TIMING CHAIN REPLACED 6MO AGO, 1M LOST PLEASE HELP

5 Replies

BLACKOP555

MECHANIC
10,371 POSTS

First thigns first. Check with a spark tester hooked to a good ground. Are you getting the same spark on 1 and 4 as you are on 2 and 3? Same color spark. Definition, pattern, speed of fire?

Listen to the injectors or feel them and see if they are all clicking. If they ain't clicking then there is a issue with the injectors. Check for signal at them with a noid light. Should be the same as on cylinder 2 and 3

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Friday, December 4th, 2009 AT 3:33 PM

BIGTEATS 1

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CYL.1&4 SAME SPARK AS 2&3, NOID LIGHT SAME ON ALL 4 AND INJECTORS WORKING, SEEMS TO BE RUNNING RICH, COULD CRANK SENSOR CAUSE THIS PROBLEM

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Friday, December 4th, 2009 AT 4:17 PM

BLACKOP555

MECHANIC
10,371 POSTS

Crank sensor will not be the issue as 2 and 3 are running fine

when did you notice this first occur? Did it happen all of a sudden or was the vehicle slowly starting to run worse and worse.

EDIT:
also has the vehicle been ran overheated lately? I need as much as you can give me.

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Friday, December 4th, 2009 AT 5:48 PM

BIGTEATS 1

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HAPPEN ALL OF A SUDDEN, NOT OVER HEATED, ENGINE ALSO SOUNDS LIKE IT MAY BE POPPING FROM THROTTLE BODY, AND HAS A RATTLING SOUND, HAS NO PLAY IN TIMING CHAIN AND ALL THE ROCKER ARE MOVING FIND, PUMP AIR INTO CYLINDERS AND NO AIR CAME FROM EXHAUST OR THROTTLE BODY.

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Monday, December 7th, 2009 AT 7:11 AM

BLACKOP555