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Engine running rough - 2005 Chevrolet Cobalt

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Need help with fault code

Posted on Oct 11, 2008

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My 1996 Buick Skylark Custom 2.4L Twin Cam engine shakes and rides rough what could be the problem. New Bwd sensor,coil pack and module,and Spark plugs.


Jodesha, Should have scanned for diagnostic codes, have engine and transmission mounts checked. Check for vacuum leaks and or injectors could be a problem.
Check the attached links,instruction and guides on diagnosing rough running engine. Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."

How to Fix Rough Engine Idle Problems at YouFixCars com

https://www.2carpros.com/articles/engine-misfires-or-runs-rough

The Lost Art of Diagnosing Engine Problems

Rough Running Engines Car Repair Information From MasterTechMark

Apr 07, 2016 | Buick Cars & Trucks

1 Answer

1992 F-350 w/460. Why does it run roughly after warmed up?


Does it run rough at hot idle ? How many miles ? Any recent work done on engine ?

Nov 05, 2015 | Ford Cars & Trucks

1 Answer

Have 3.0 24 valve engine has intermitten rough Idle and during driving at excelleration


What are the trouble codes set? Get them read for free at most auto parts stores.

Dec 10, 2014 | Cars & Trucks

1 Answer

Engine runs rough


unplug ur main wires an make sure there dry

Dec 29, 2012 | 1994 Geo Prizm

1 Answer

My Chevy 2500, 2001 runs rough when it cold outside


It can be issue with low fuel pressure,the fuel pump is getting old both needs to be checked.Also get the IAC valve checked.
Go through the related help links with similar problem,it may help:---
Click the links below:---
Engine Idles Rough and Dies? http://whatisbyme.blogspot.in/2012/05/1994-lexus-es300-engine-idles-rough-and.html

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van idles rough? http://howtobyme.blogspot.in/2012/01/2004-ford-freestar-van-idles-rough.html

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runs lean and idles rough? http://technoanswers.blogspot.in/2012/02/ford-runs-lean-and-idles-rough.html

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Car still runs Rough after tune up?

http://howtobyme.blogspot.com/2011/12/car-still-runs-rough-after-tune-up.html

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2006 kia rio runs rough http://technoanswers.blogspot.com/2012/10/2006-kia-rio-runs-rough.html

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Idle flair is noticed on car? Rough idle? car will not idle? Erratic idle speed? http://technoanswers.blogspot.in/2012/02/idle-flair-is-noticed-on-car-rough-idle.html

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Rough idle, staling and Erratic shifting? http://technoanswers.blogspot.in/2012/03/rough-idlestaling-and-erratic-shifting.html

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These details will help.
Thanks.

Nov 06, 2012 | Cars & Trucks

1 Answer

Car idles rough in park also runs rough in overdrive


Sometimes a rough idle like that is a fuel filter. As you've already done the plugs and wires the fuel filter would be my next bet.

Mar 15, 2010 | 1993 Buick LeSabre

1 Answer

Random multiple misfirings


Here is a list of possible causes. You should not drive the vehicle if the check engine light is flashing all the time, you can cause even more damage. It could pay to have a professional find the real cause.

Spark plugs that are incorrect for the application, cracked, improperly gaped or worn can cause the engine to misfire or run rough at all times.
An IC module that failed to correctly control the ignition coil(s) will cause the engine to misfire or run rough at all times.
Poor connections, broken wiring or wiring that has shorts to ground can cause the engine to misfire or run rough at all times. NOTE: Check connectors that might be pulled apart as the engine flexes or wires that short to ground as they pass near brackets or shorts to ground on the exhaust manifold.
Fuel injector(s) that are shorted, plugged or partially restricted can cause the engine to misfire or run rough at all times.
An ignition coil(s) that has low output, corrosion on the coil tower(s), is carbon tracked or arcs to ground will cause the engine to misfire or run rough at all times.
A PCM that failed to properly control the injector or ignition timing will cause the engine to misfire or run rough at all times.

Feb 02, 2009 | Saturn SL1 Cars & Trucks

2 Answers

Engine runs rough at certain speeds 3.0 v6 flex-fuel 1999 ranger


Check and see if the EGR valve is leaking, to check this spray water on it at idle, if the water steams off the valve is leaking and is the source of your problem, also are you sure you hooked the new DPFE sensor up right? re-check it..

Nov 23, 2008 | 1999 Ford Ranger SuperCab

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