Question about 1998 Honda Accord

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Engine runs smooth at idle vibrates when you put in gear and gets worse when ac turns on goes away when you raise the idle a little drives fine already had motor mounts checked

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That sort of misfire is typical of ignition problems. Start by checking the condition of the plugs, then the wires, then rotor, and finally the distributor cap. Have in mind that a particularly black, oily spark plug doesnt necessarily means that it is shot, but also it could mean that the cable leading to it, or the corresponding contact at the distributor cap is not doing its job.

Posted on Aug 26, 2010

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Posted on Jan 02, 2017

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1990 thunderbird cranks up fine but when shift into drive or reverse car shuts off like turning switch off no jerking or anything engine just stops immediately


What happens if you give it a little gas ? Hold the RPM's up , will it keep running then ? How does it Idle , smooth or ruff ? Does the idle seam low ?

Mar 23, 2015 | 1990 Ford Thunderbird

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Diagnois ford territory engine mount vibration


u can do this 2 ways.tranny mounts, have someone get in the car,holdbreak,put in gear,slightly ascelarate the throttle and watch the engine .in drive engine will travel forward and vise versa in reverse.believe me, if u have any bad u will think the motor is tryin to jump out. upper mount check/ 9 out of 10 times,it feels like u are in a popcorn machine when u come to a complete stop ildeing in gear, take a small floorjack and place it under the oilpan again have someone in the car . start and put in gear, just let it idle,and slightly raise just the motor and see if the vibration goes away ./ note,be sure to have a small piece of wood between jack an oilpan.

Feb 04, 2015 | 2006 Ford Territory 4.0

3 Answers

Unknown Vibration Feeling...


Hi, I would try electrical fault. Try this, If you have engine running and handbrake fully on, and foot brake on, put it in drive and accelerate. If engine is rough or vibrating it could be spark plug, leads or coil pack. Under load any one of these will fail and cause a rumble (vibration) in the engine, when the engine has come off load it will run fine. You could also try putting your foot hard down on the pedal from stop position as if you were trying to do a burn out. It will give you the same result as handbrake test. That could be your problem as you mentioned that when aircon is turned on it does it (which is putting load on engine), but as far as slowing down to corner??????.

Nov 20, 2014 | Cars & Trucks

1 Answer

This rough idle business; With the AC on at a stop, the idle is about 600 to 700 rpm and vibrates the cabin. Can the dealer change a computer setting to correct this?


Problem on focus too . Without A/C on it idle's smooth . With A/C on the PCM - engine computer should raise the idle rpm. 850 . The only way to raise the idle would be to have PCM flashed programmed with up dated software . Adjusting the idle anyother way would cause check engine light problem , Wouldn't be able to get it to go out. Your best bet ,take it to the ford dealer and have the PCM reflashed .

Sep 14, 2017 | Ford Escape Cars & Trucks

3 Answers

Why does a 2006 Ford Fusion have a strong vibration when stopped and in Drive?


If there are no check engine lights could be a bad motor mount or two. Would have them checked. Try putting car in neutral and see if vibration disapates a little.

Aug 23, 2012 | 2006 Ford Fusion

1 Answer

1997 ford escort idles rough when hot


1997 escort idles rough, the first thing is to make sure the throtlebody plate is clean. This sounds like the idle may be staying to low at times if it smooths out with ac on, when the ac is turnned on the computer raises the idle a touch to make up for the strain on the engine from the ac compressor, clean throtlebody and look at and clean idle air control valve, if this valve is not controlling the idle when needed the engine will idle lower than normal and cause a rough idle.
Another thing is the sparkplug wires, take a look at those, if at night or with a good eye use a spray bottle and spray a mist over the wires and watch for any sparking, this spark may be very small so look at each wire closely or may be big enough to see and hear. this is where i would start. good day.

Apr 10, 2012 | 1997 Ford Escort

1 Answer

My 2003 Ford Focus started making a grinding noise when in reverse and in right turns. After driving about 20 miles the symptoms disappeared. The symptoms have gotten progressively worse, vibration and...


Check the front engine mount..If its bad it could make a noise while turning or reverse..Hold the car in gear with your foot on the brake and carefully raise the engine ..do it in both reverse or forward and look for excessive movement..

Sep 22, 2011 | 2003 Ford Focus

1 Answer

Engine shut down


How is your engine at idle? It should be not less than 700 RPM. 1-If it is not then you can raise it up. 2-If your idle is OK then need to have transmission checked for torque converter lockup problem.

Sep 23, 2009 | 2001 Mercedes-Benz C-Class

1 Answer

Engine rpms drop very low when AC is on


make sure your engine idle speed correct.air conditioner compressor will take power from engine.the engine has to be fine tune.your engine idle to low have the idle speed control checked.

Jun 06, 2009 | 2003 Toyota Camry

2 Answers

94Metro Has a bad vibration at idle, gets worse in gear stopped


check all motor mounts first. if they are ok then check to make sure all cylenders are firing. try pulling one plug wire off the spark plug and see if the engine changes sound or anything. if it does, put the wire right back on then move to the next one and repete. if you pull one and it does not change then that plug is not firing. could be caused by a crack in the porcelian in the plug or bad plug wire connection or bad wire

Mar 12, 2009 | 1994 Geo Metro

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