Question about 1996 Chevrolet Cavalier

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Rough idling and loss of power

My car has very rough idling. also when i try to drive the rpm's will increase but no power is being transferred i have to let off the gas and press again recently that is not working. this problem comes and goes throughout the day and it is really worrying me what could the problem be? i just changed the plugs and wires it is still acting up

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  • 26 Answers

You might have to change the coil pack

Posted on Oct 08, 2009

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Runs rough when it's warm. comes and goes. has a 2.7. and then a 99 dodge carvan with a 3.3 does the same thing.


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CarGurusMar 27, 2011 - It seems after car gets to a certain temperature it runs very rough. ... 2011 at 12:16 PM about the 1998 Chrysler Sebring 2 Dr LXi Coupe ... it.one day it washot out and it was running sluggish with rough idle.and ... I changed the altnator and battery its runs like its brand-new.now ... 2002 Chrysler Sebring LXi.

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CarGurusNov 3, 2011 - Engine Power Loss After Car Is Warmed Up - Major loss of power after car has ... When vehicle is cold runs ok, sometimes a little rough but not bad. Full power. Allowed vehicle to run for over 45 minutes last night at idle, died on its own, car sat approximately 20-30 minutes. ... 2002 Chrysler Sebring LX.

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Jan 01, 2016 | 2002 Chrysler Sebring

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Why does my saturn sound so bad when idles?


if the car is loud/noisy there is a hole in the exhaust system and this will cause a rough idle because of a loss of back pressure and the vales will not open and close properly resulting in the rough idle it also will make the engine run hotter and this will cause your spark plug gaps to increase and the spark will be less than needed to ignite the fuel in the cylinder for proper combustion which will result in poor gas mileage and lack of power is the check engine light on?

Aug 23, 2014 | Saturn SL Cars & Trucks

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The car dies at stop and idles rough at low rpm


OBD Tools 365 Days Shop
A rough engine idle can come from a variety of causes. During the winter months, cars may have a harder time starting and will shake when first turned on. This form of rough idle can easily be mistaken for other problems. Engine idle problems can also be attributed to malfunctioning components, such as spark plugs. Holes in the air intake valve can also cause a rough engine idle because of excessive amounts of air being drawn in.
The rough idle of an engine can signify a power loss in the car. This loss of power could lead to other problems, such as excessive gas consumption. This lack of power can also lead to additional wear on other parts of the car. Ignoring problems with the engine of can lead to a massive breakdown that will require you either to make costly repairs or replace the car entirely.

Aug 06, 2014 | Cars & Trucks

1 Answer

1993 gmc suburban rough idle, stall in reverse


Idle air control (IAC) control rpm idle during idle.

Test it on idle with ALL electrical on full force.
RPM should increase.
If RPM remain the same then IAC is question.

Jan 13, 2014 | 1993 GMC Suburban

1 Answer

2002 ford windstar rough idle


Sounds like you never diagnose any fault codes
& just continue to drive on

ABS,Brake light,Evap,now a failed transaxle

Sep 01, 2013 | Cars & Trucks

1 Answer

I have a 95 mustang v6 that I got as a project. It had blown was gasket and ran rough at idle with lack of power. I redid heads and gaskets etc it runs great and has good power but still idles rough at...


Idling is too slow at 500 rpm.......think about at least 650 rpm to charge the battery and keep up inertia for better take-off power.
Find out how to increase rpm,whether it's a screw-stop adjustment or a timing problem. don-ohio (:^)

Jun 12, 2013 | Cars & Trucks

1 Answer

2000 ford expedition ,,rough idle in park..rough idle in drive,, sometimes dies..rpm's in drive at idle 400...replaced iac


Check the fuel pressure at the rail assembly, there should be a min of 40 lbs at the rails. Do you have any loss of power under a load? You may have an issue with your o2 sensor that is causing the ecm to send an improper signal to the engine ign/fuel map.

Dec 07, 2010 | 2000 Ford Expedition

1 Answer

Rough idle, power loss while driving


check /replace the fuel filter and check the fuel pump pressure before and after the bleed valve to the throttle injectors

Jan 20, 2010 | 1992 Chevrolet K1500

2 Answers

Morning start rough idle accelaration


Low / uneven idle problem can cause by a lot of components.

Dirty air filter

Dirty injectors + o-rings

Vacuum leak at intake manifold and vacuum hose.

Bad Idle Air Control Motor (IAC)

Low compression (170 psi + is OK)

Start cleaning and repair these trouble spots and see is there any improvement.

====

For more advance DIY'er then you may try this.

Use a can of Berryman carburetor clean to locate the vacuum leak.


SEE SAMPLE PICTURE HERE


This is a 20-30 minutes job.

Vacuum leaks can occur in following locations.


Intake manifold AND/OR vacuum lines.


Intake manifold is not accessible unless the engine head if off.

You can still check the potential leak by spraying some Berryman near the intake manifold.

Listen for rpm increase after you introduce the Berryman (FUEL) at idle.


Do the same starting from the brake booster unit (the round unit) on the drive side fire all.

Carefully listen for increase of RPM right after to spray the Berryman to the potential vacuum spot.

Get a friend to HEAR the ROM increase or monitor for RPM on the tech.

DO NOT AIM the Berryman into any heat source.


PLEASE RATE my answer if it is useful to you.

Nov 30, 2009 | 1986 Nissan Maxima

1 Answer

Rough idle with check engine light


Usually a rough idle on a Honda is a result of the idle speed being too low. What is your RPM suring idle now. Try to increase it using the screw on the idle air control by only a quarter turn at a time. Hope this helps.

May 09, 2009 | 2002 Honda S2000

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