Question about Hyundai Motor 2004 Sonata

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Car vibrates and runs rough real bad when let off the gas and backing up. seems alright when in park.starts up alittle rough then seems to go down,have had fuel injectors cleaned.

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You have a broken engine mount and i would think the erth is on it

Posted on May 04, 2009

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Posted on Jan 02, 2017

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I have a 99 ford f150. Sometimes it runs perfect, then out of no where when I try to accelerate it vibrates bad and becomea hesitant. When I came to a stop I switched threw all gears and it seems like it...


This sounds like you might have a bad plug wire or something else in the ignition system is arcing to ground. A quick way to verify this is to run the truck in Park at idle. Next, spray the ignition wires with Windex. You'll notice the truck starting to rough up and might even see the bad wire arcing to ground. A complete tuneup would be recommended in this case.
I hope this helps! :)

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I have a Kia Sedona van 2002 . I stoped to fill it up with gas but i left it running after i filled it up full the van started acting funny and died. I started it back up ran alright then the rpms go up...


Could be a sensor , but without testing , this would be a guess ! Have seen TPS - throttle position sensors on chysler products do this , Mass air flow sensors on GM vehicles , plus bad IAC - idle air control motor . Don't think you would like to replace all these parts , your best bet , take it to a qualified repair shop . Have it tested !

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2001 dodge 1500 V-6 will start run for alittle bit then won't idle unless you keep gas petel depressed?


This sounds like you have a sticky EGR valve. When it\'s idling rough, try tapping on it with an object such as the butt-end of a screwdriver and see if it suddenly smooths out. If so, you\'ve found your problem and you should consider changing the valve assembly. I hope this helps! :)

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I have a 1996 Oldsmobile cutlass supreme and it was running alittle rough but was running. It sounded like it was missing alittle bit. It stalled on me at a red light but started back up and ran good. The...


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1984 c-20 truck 305 4bl carb runs ok in park but when put into gaer runs real rough and a lot of vibration and dies


mcdevito75 here, Sounds like everything in the engine could be out of adjustment, Dirty plugs, bad wires, dirty air filter, Have your local repair shop take a look, a tune up may be the answer, specially if not tune in 1 year.

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93 F350 7.3 deisel runs rough and smokes could the


I would check you're fuel and return lines.ford sells a kit with all new hosesand fittings

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Symtoms of a bad timimg chain/belt...but ran real


Problem is not solved but I did change the fuel filter, coil pack,ICM and have proper fuel pressure to the motor. Car starts but dies right away. I cant seem to find out if the fob on the key ring has something to do with stopping the motor. This fob says Radio Key by Secure Key with a number 35077 stamped on this thing.. Still trying to find out what this is and does it effect the cars ability to run

Mar 15, 2010 | 2004 Oldsmobile Alero

1 Answer

93 cavalier vibrating


your probably feeling a rough idle of the engine. need a tune up?

in park the engine is not loaded down, just idling at a low rpm=rough
in drive with brake on you have put some load on motor also at low rpm=rough
in drive on the road engine is at higher rpm, = smoother

generally 4 cylinder motors idle a bit rough, especially if one spark plug is not firing right or fouled or one bad spark plug wire. tune up may fix it. if it is not stumbling real bad or stalling then you can live with it.

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