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Chevrolet Prizm Vibration Issues

35 messages,  Last post on Nov 03, 2009 at 6:39 PM

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What is this discussion about? Chevrolet Prizm, Engine, Sedan

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#27 of 35 Engine vibration issues by bud19 Jun 03, 2007 (7:23 am)
1991 Geo Prizm (105,000 miles). I had changed the timing belts, accessory drive belt, generator drive belt in summer of 2006. After I changed the belts I could hear a clicking noise at idle and decided to keep running the car. Come winter, I observed the engine was vibrating heavily at idle but was fine at higher speeds and the noise seem to be excessive at idle. When I had removed the crankshaft pulley,to change the timing belt, I had inserted 2 small steel bars in the lightning holes and passed a rod through them to hold the crank pulley from turning. This allowed me to remove the crank pulley nut. When I installed the pulley back I did the same thing.   The car was not used for the entire winter. I recently took the car to a mechanic and he tells me the crank pulley/ damper is shot. Do you think that is a possibility? Considering the noise coming out at idle. Also is it possible I did something wrong while installing the timing belt? Replies to this message: edmj (Nov 14, 2007 7:59 am)
#28 of 35 Re: Engine vibration issues by edmj Nov 14, 2007 (7:59 am)
Replying to: bud19 (Jun 03, 2007 7:23 am) My wife's 1994 Geo Prizm shudders at highway speeds when we accelerate or let up off the gas so that the engine starts "engine braking." In that peak moment in between, when the engine isn't engaged in accelerating or in slowing down the car, the shuddering stops, which leads me to think it's not a tire balance question. What could it be? Struts? Engine mounts? I don't particularly notice any problem at idle or low speeds. We'll take it into the shop soon, I'm just curious what you all think.
#29 of 35 Re: Front end making a clunking noise [tonylee] by mankind117 Nov 29, 2007 (7:21 pm)
Replying to: tonylee (Nov 27, 2006 3:31 pm) Hi, I'm having what sounds like a similar problem with a 1997 prizm. Did you ever figure out what was wrong? Replies to this message: bitpoh (Dec 09, 2007 10:34 am)
#30 of 35 Re: Front end making a clunking noise [mankind117] by bitpoh Dec 09, 2007 (10:34 am)
Replying to: mankind117 (Nov 29, 2007 7:21 pm) Ditto. Same problem on my wife's 96 Prizm and it is driving both of us nuts, especially now that the weather is colder. Has anyone figure anything out yet? I read of some of the earlier posts in this thread, which associated vibration and idle with engine mounts. Is this the same problem here?
#31 of 35 1994 geo prizm motor mount by jeff89 Dec 09, 2007 (12:20 pm)
has anyone out there ever changed the rear engine mount on one of these cars. i can't get the old mount out...it won't clear the steering rack. please help.
#32 of 35 Re: Engine Mounts [prizmlsi] by hruiz617 Mar 02, 2008 (7:42 pm)
Replying to: prizmlsi (Aug 11, 2004 7:36 am) hi,      i myself did replace all of the mounts on my 1995 geo prizm do to that annoying vibration noise, but it is still there ... not as loud as before but still there ... anyone else experiencing the same and got to the bottom of the vibration? let me know... thanx...
#33 of 35 Engine vibration by prizmlover Mar 17, 2008 (6:50 am)
I have owned my 95 prizm for 9 years. Bought it in '99 with 40k and it now has 148k. It has vibrated since the first day I owned it, with very little change. My exhaust guy told me it was probably engine mounts and so I have ignored it since. Otherwise the car has been the most reliable and best handling car I have ever owned. Looks like this problem is pretty common, but does not seem to be too serious. At least in my own experience so far. Here's hoping I can get another 100K out of it without trying to fix this problem, which seems for some reason to be unfixable. I like reading in this forum. Please keep the comments and questions coming. I have learned a lot about the car, even after owning one for a while, and thinking (smugly) that I knew it all. Thanks . Replies to this message: geoblue (Jul 03, 2008 12:55 pm)
#34 of 35 Re: Engine vibration [prizmlover] by geoblue Jul 03, 2008 (12:55 pm)
Replying to: prizmlover (Mar 17, 2008 6:50 am) Any updates?
#35 of 35 Re: Misfire/vibration issues/what tires are good? [uraspaz88] by wolfdragon Nov 03, 2009 (6:39 pm)
Replying to: uraspaz88 (Dec 09, 2006 10:32 am) i can tell you that any tires you put on a prism will not help in the snow our cars are so light it's pathetic.but if you can look for some 14" rims you can run a slightly wider tire for more traction you can go from a P175/70R13 to a P185/65R14 and it will not affect your speedometer.

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