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Author
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Topic: car shakes...whats wrong?**Update, it's fixed**
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biggerisbetter
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Member # 3730
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posted
 
 
Whenever I start it up the whole car shakes rapidly. If I rev it up you can feel the shake like a wave starting from the front then moving its way through the exhaust to the back. When I lifed up the hood you can just see the whole engine shaking back and forth, its been going on for the past couple weeks and its driving me crazy. The car has 95,000 miles on it and I checked the air filter, distributor, firing order and oil. Could it be as simple as bad spark plugs, vacum leak, or fuel filter?
[ November 25, 2003, 01:24 PM: Message edited by: biggerisbetter ]
Posts: 14 | From: Livermore | Registered: Oct 2003
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Blu50Stang
CAFords OG
Member # 489
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posted
Sounds like it may be running on 7. Check/relace the spark plugs and plug wires.
[ November 23, 2003, 04:11 PM: Message edited by: Blu50Stang ]
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Ross
'88 GT - 5.0&SF 4/04 | MM&FF 8/09 | MM&FF 79-93 Mustang Performance Cover 12/12
'17 GT350R
Posts: 1916 | From: Not CA | Registered: Oct 2001
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biggerisbetter
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Member # 3730
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Damn, I hope its not that bad. The funny thing is that this was going on over a month ago, I checked the oil and it was really low, so I did an oil change and it went away for a couple weeks, now its come back.
[ November 23, 2003, 04:41 PM: Message edited by: biggerisbetter ]
Posts: 14 | From: Livermore | Registered: Oct 2003
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mustanggt5091
All I need is.....
Member # 444
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posted
if the motor is moving around a lot I would say its the motor mounts
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88 GT 357w (SOLD):(
06 Limited Edition R6 !!!!!
Posts: 2353 | From: Fairfield / Santa Rosa , Ca | Registered: Sep 2001
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Hungry Hippo
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Member # 537
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could be a bad spark plug/wire or a dead harmonic balancer. if the balancer is bad, dont drive it
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05 S4 Avant(wagon)
09 C6 H/C/I
Posts: 2959 | From: east bay | Registered: Nov 2001
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AcesWild85
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Member # 2616
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posted
Get a flash light and look really closely at the motor mounts. If the rubber is all cracked and ugly, replace them.
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College student and U.S. Marine; The possibilities are endless...
Mustangs aren't built; they're born!
Posts: 844 | From: San Jose, CA | Registered: Mar 2003
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Hater
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Member # 3085
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posted
Youre most cetainly runing in 7 pistons,,is the check engine light on? it should be on..you can pull the codes, if not, manually check the spark plugs, you may have fouled one, That happened to me once and the car was shaking like yours,,rev the car to 2500 or 3000 rpms and the shaking should go away or at least decrease in some way...Thats one thing,,the other one is a head gasket..Good luck. ![[patriot]](graemlins/patriot.gif)
Posts: 168 | Registered: Jul 2003
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biggerisbetter
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Member # 3730
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posted
yeah, the check engine light isn't on. Hopefully its just a bad spark plug or wire. How would I check to see if its the harmonic balancer?
Posts: 14 | From: Livermore | Registered: Oct 2003
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Gear Head
JARED
Member # 779
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posted
quote:
Originally posted by biggerisbetter:
yeah, the check engine light isn't on. Hopefully its just a bad spark plug or wire. How would I check to see if its the harmonic balancer?
I would first do a full tune up and then also look at the condition of the motor mounts.
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Support our troops!
Posts: 5685 | From: EASTBAY | Registered: Jan 2002
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94gt
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Member # 3060
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posted
when I was replacing my water pump, JohnB looked at my balancer and almost smacked me, since the rubber was sticking out about 1 inch at the highest point! ![[Frown]](frown.gif) ![[Eek!]](eek.gif)
Im glad as hell he caught it!!
![[worship]](graemlins/worship.gif)
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2020 Explorer ST
2011 Silver Raptor 'Screw
Posts: 5777 | From: Beavercreek, OH | Registered: Jul 2003
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biggerisbetter
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Member # 3730
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posted
I was about to head down to kragen this morning and get some new spark plugs, but before I left I popped the hood to take another look. I checked what I believed to be the PCV valve (at the back of the intake manifold) and it was loose!! I tightened it up, started the car, and it runs like a champ! No more shaking! I'm so relieved it wasn't anything major. Thanks for all your advice guys.
Posts: 14 | From: Livermore | Registered: Oct 2003
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94gt
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Member # 3060
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I think you should buy us all burgers, or beer. ![[Razz]](tongue.gif)
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2020 Explorer ST
2011 Silver Raptor 'Screw
Posts: 5777 | From: Beavercreek, OH | Registered: Jul 2003
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Jdub07
( O Y O )
Member # 2728
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posted
quote:
Originally posted by biggerisbetter:
I was about to head down to kragen this morning and get some new spark plugs, but before I left I popped the hood to take another look. I checked what I believed to be the PCV valve (at the back of the intake manifold) and it was loose!! I tightened it up, started the car, and it runs like a champ! No more shaking! I'm so relieved it wasn't anything major. Thanks for all your advice guys.
Maybe it got shaken loose from the shaking of the motor....I hope it was just that causing it though! ![[Big Grin]](biggrin.gif)
Posts: 7282 | Registered: Apr 2003
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166 Merlo
FELONY
MOTORSPORTS
Member # 1549
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posted
vacuum leak!
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'89 - Boss Coupe
'70 - Drop Cutthang
'68 - Cougnut
'87 - 0166, Its real
Posts: 3954 | From: Thebay | Registered: Jul 2002
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1990GT50
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Member # 2119
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I dont think the PCV valve would cause your car to shake. Mine was always loose and it didn't affect it. Maby its going away for a week or two like it did before. Sorry to bring you down but oh well.
Posts: 877 | From: Benicia | Registered: Nov 2002
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91 5.0
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Member # 1527
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A really loose PCV valve can cause a vacuum leak, which can cause cars to run shitty and shake .
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02 GT - Zinc Yellow
91 5.0 LX - Red
Posts: 1316 | From: Fairfield | Registered: Jul 2002
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Hater
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Member # 3085
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I was driving my car for two full days after I got it back from the mechanic with a new engine,,sudenly a check engine ligth appears..took it to the shop, put the scanner on,,pulled the coded,,they were about O2 sensors, because of and exhaust leak on the drivers side header,,and an EGR problem,,,dont know what that is,,but the mechanic said that a little plastic made line was loose,,so they put it back in,,as well as the exhaust,,and no more check engine light,,but today it happened again,,maybe I have to buy anothe EGR line since that one is very shitty!!
Posts: 168 | Registered: Jul 2003
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