Question about 1995 Mazda 626

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Shaking rough idle after replacing motor mounts and a tune up

Idle is steady but very rough and shakes whole car

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  • 73 Answers

Motor mounts were either not hooked up right or improperly installed or maybe you have a broken tranny mount,get a haynes repair manual to help show you how to properly install those

Posted on Jan 14, 2013

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Posted on Jan 02, 2017

teds_repairs
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SOURCE: if the idle control valve is bad will the idle still be steady at 8000rpm?

8000 rpm is redline and the motor would blow up. do you mean 800 rpm

Posted on Dec 13, 2012

  • 91 Answers

SOURCE: Car shakes at idle goes away when accelerate, rough idle

needs a tune up

Posted on Mar 30, 2009

  • 260 Answers

SOURCE: I need to replace motor mounts 2000 mazda 626

they might need to be tightened thats all.

Posted on Apr 10, 2009

  • 1 Answer

SOURCE: loss of power car shakes when i push gas pedal while driving

92 accord loss power and shake

Posted on Mar 31, 2010

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What would cause truck to shake very hard or rough when starting?


I really need to know the mileage.....?..also the question isn't very clear ...Is the whole truck shaking roughly or is the engine shaking roughly or is it both the engine and truck shaking..?..Since I am not sure I will answer what I can....Ok......If the truck is shaking while sitting still at idle the engine/trans mounts could be worn and or loose mounting hardware...If the engine is running roughly at idle causing all to shake that bad it could be a number of things causing it as usual...Quite often a faulty plug wire/and or bad plug will make it have a misfire because it will be running on only 5 cylinders..If that's the case it could be more than one bad...A vacuum leak will cause it to perform in the same manner...however all cylinders will be firing..Normally a vacuum leak is easy to pinpoint..however it could be a faulty IAC valve..(IDLE AIR CONTROL)..The idle air control is designed to hold a high idle at start up then slowly bring idle down to proper Rpm.....A faulty TPS (THROTTLE POSITION SENSOR) will also cause a rough running problem..And let's not forget the O2 sensor..(OXYGEN SENSOR)..The O2 sensor controls air/fuel mixture...and yes an exhaust manifold gasket will make it run rough but not too bad...It has a rough running sound more so than causing it to horribly shake..It will shake but not to bad..
it is located at the exhaust side of engine..The exhaust manifold is mounted to the engine exhaust port..the exhaust pipe is mounted to the exhaust manifold and the muffler/cat converter is mounted to the exhaust pipe...You can check the plug wires quickly..With engine running carefully remove plug wires 1 at a time..If the sound of engine gets worse the wire you removed is good..after verifying it is good or bad plug wire back on then pull the next wire..and so on..If you pull a wire off and there is no change in engine operation that is the bad wire..If that is the case change all plugs and wires...One at a time..(It is a good idea to make sure all wires come off easily before starting engine..old wires will come apart easily..grasp wire tightly at boot and twist left to right while pulling..)as far as the other components I spoke as well as many others,the best,easy way is to have it hooked to a scanner and they can check/test all components for proper operation...Now..If it runs good but is shaking the engine/trans mounts are worn as I stated earlier..any loose engine component will cause an engine shake also but you should notice it at a glance...engine mount bolts/nuts being loose can be tightened without changing mounts if caught in time..Trans could be coming loose.also worn clutch will cause vibration...Send more info and I can guide you to remove and replace any faulty components you may find to save you money.........Brooks/Metalpoet.....

May 17, 2014 | 1993 Chevrolet S-10

1 Answer

97 chevy tahoe runs rough with a shake


A high idle is common with a vacuum leak. Ive done plenty of chevy intake manifold gaskets due to the gasket failing.

Jan 21, 2014 | 1997 Chevrolet Tahoe

1 Answer

If the idle control valve is bad will the idle still be steady at 8000rpm?


8000 rpm is redline and the motor would blow up. do you mean 800 rpm

Dec 13, 2012 | 1995 Mazda 626

1 Answer

Car shakes when idling'


Well this could be caused by a number of things. But the most common cause is an "engine miss." You could have 1 cylinder that has stopped firing. This will cause a very rough idle and very possibly shake or shudder whenever you accelerate. Another cause may be a main "vacuum hose could be disconnected" from it's port. Vacuum leaks cause engine shake at idle. Check for loose, cracked, or disconnected vacuum hoses under the hood. The third and least likely cause is a "broken or worn motor mount". If the engine is not securely held down in place by all the motor mounts, it will vibrate excessively and cause a shake at idle. The engine miss and motor mount problems are 2 issues best left to a professional to tackle. But as I said, you could tackle the vacuum leak issue yourself by checking under the hood. Hope this helps, good luck!

Sep 30, 2011 | 2000 Chevrolet Cavalier

1 Answer

Car idles rough and really shakes when trying to accelerate at highway speeds and gas mileage has gone down


MOTOR MOUNTS, TUNE-UP, FRONT SUSPENSION, TRANS MOUNT, TIRE PRESSURE OR BALANCE WHEELS

Jun 16, 2011 | 1992 Buick Regal

1 Answer

Needs fuse box location and car idles rough


Fuse box is behind the soft panel under your steering wheel. Is your check engine light flashing or on? Would be a misfire causing the rough idle if it is flashing. A possible bad coil. If its just a shake with no check engine light then it could just be a motor mount.

Apr 27, 2010 | 1998 Cadillac Catera

1 Answer

I have a 2000 neon, it shakes n netural, worse in


mass air flow sencer and idle sencer

Mar 04, 2010 | 2000 Dodge Neon

3 Answers

1994 Nissan Altima shakes while idling


Broken or worn out engine mounts will cause allot of engine vibration in drive at idle, reverse also, change all 4 the mounts, not just the 2 broken ones. As far as slow acceleration no mounts will not cause that, Have you reached the 100,000 mile recommended tune up? have you ever replaced the fuel filter, this is required every 30,000, let me know.

Nov 26, 2008 | 1994 Nissan Altima

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