Question about Buick Century
AFTER A NIGHT OF BELOW 0 TEMPERATURES MY 93 BUICK CENTURY WOULNT START REPLACED IAC AND STARTED RUNNING. THEN I GOT STUCK IN SNOW BACKING OUT OF DRIVE WAY AND PUSHED THE ENGINE HARD WITH THE HELP OF 2 POEPLE. IT STARTED TO ACCELERATE SLOW AND WOULD SHAKE AND MISFIRE BETWEEN GEARS AND AT HIGHWAY SPEEDS. IT CRANKS NO START . I UNPLUGGED MAP SENSOR RAN FOR HALF A A SECOND AND NOW WILL NOT START
Try to pull any ECM codes that may be related , a local Checker or Auto zone might help with code retrieval.
Posted on Feb 10, 2014
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Posted on Jan 02, 2017
SOURCE: Misfire in two cylinders
Check to see if the two cylinders misfiring are on the same coil pack. If so, change the coil pack in question.
This happened to me on 1997 Cadillac Deville Limousine.
Also, check for a blown head gasket with compression test.
Posted on Jul 04, 2010
Hi, first thing, is your check engine light on? if it is, you can check the codes yourself, get a paper clip unfold it so you got 2 straight ends, find your dianostics port where you plug in the scanner, take the paper clip and stick one end into the one on the far right and the other to the one next to it and turn ignition key to on position, check engine should start blinking if not move the last end of paper clip you plug into the next one in port until it does( turning key off each time before you move paper clip end) do this procedure until the light starts to blink. When it blinks count the blinks, for example it will blink one time than a pause than blink twice quick which means 12 and so on. It will start out with a 12 which means the computer is ready to give stored codes. Just write down the codes and either take them to napa, or auto zone, or to a shop you know, and they can tell you what they mean. On a car that old it could be almost anything, parts wear out, but right now what stands out to me by your description i would check the cadalitic converter it might be plugged. Take some advise get someone that knows something about cars or at least works on them on a regulator bases. That way your not playing a gessing game.
Posted on Sep 24, 2010
Did you replace the crank sensor that is in the engine block between the engine and transmission? it has two and the one by the pulley hardly ever goes bad.
Posted on Dec 12, 2010
Your first mistake is thinking that the only thing that can cause a misfire is a coil or spark plug. Misfires can be caused by MANY things, including faulty fuel injectors, injector control circuits, blown head gaskets, vacuum leaks, burned valves, broken valve springs, low compression due to cylinder damage, worn piston rings, damaged or worn camshafts, etc..
I would recommend getting this problem properly diagnosed by a professional. Failure to fix misfire codes promptly can cause severe engine damage and destroy high-dollar parts like oxygen Sensors, catalytic converters, engine blocks and cylinder heads.
Posted on May 11, 2012
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