Engine Vibration/Noise

JDM GT Four, ST185RC and ST205.

Engine Vibration/Noise

Postby awolo » Thu Feb 23, 2012 12:12 pm

Whats up guys.


Does any one have any idea what it could be??

Thanks in advance!
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Last edited by awolo on Tue Aug 28, 2012 11:10 pm, edited 2 times in total.
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Re: Engine Vibration/Noise - HELP before purchase.

Postby saved_1992 » Thu Feb 23, 2012 1:30 pm

check the timing belt, sounds very loose
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Re: Engine Vibration/Noise - HELP before purchase.

Postby mx6er2587 » Thu Feb 23, 2012 3:02 pm

possibly the timing belt tensioner although they normally sound less consistant and more like rod knock. Are the timing covers secure? When you have a noise only at certain rpms its typically something vibrating at certain frequencies.

I'd get a mechanics stethescope or a good long screwdriver and start listening to components and see if you can pinpoint exactly where its coming from.
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Re: Engine Vibration/Noise - HELP before purchase.

Postby 83841 » Thu Feb 23, 2012 9:11 pm

Did you figure it out yet? I had the same problem with a camry...it was the timing belt cover.... Took it off and went away..installed it and sounded just like that....So I left it off...LOL
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Re: Engine Vibration/Noise - HELP before purchase.

Postby awolo » Fri Feb 24, 2012 11:34 am

Still haven't figured it out.

It only makes that noise at 1300-1500 RPM.

I had pulled the timing cover back and the timing belt is very tight. I saw no weird movement from any of the components. Although, I didn't removed the timing cover completely.

83841 - Was your timing cover noticeable loose?
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Re: Engine Vibration/Noise - HELP before purchase.

Postby esracing » Fri Feb 24, 2012 2:03 pm

Toyota master tech here.something is going on in the timing belt area .remove engaged belts and run eng .still there.take all covers off and run eng use a long screw driver and touch the bearings and engine as a stethoscope
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Re: Engine Vibration/Noise - HELP before purchase.

Postby awolo » Fri Feb 24, 2012 3:55 pm

I will try that.

Thank you.

I don't think its something serious though. I mean the entire timing area look secure. There aren't any obvious movements. Part of my thinks that in the lower part of the timing side, to cover may be vibrating badly.

We where working on the car late at night in a un-heated garage.
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Re: Engine Vibration/Noise

Postby awolo » Tue May 29, 2012 12:21 pm

Still having this problem guys.

The car has been running great, but this dang rattle/vibration/ticking (that sounds really bad) has not been fixed.

I still have no clue as to what it could be.

Someone told be to adjust my valves????

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Re: Engine Vibration/Noise

Postby scottytohotty » Tue May 29, 2012 2:41 pm

There is a good chance one of your engine mounts
Have went south! In my old gt I had a very loud vibrating/rattling
Sound and it turned out to be the mounts.
Good luck!
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Re: Engine Vibration/Noise

Postby awolo » Thu May 31, 2012 1:18 pm

This sounds very internal.

I've gone over everything outside the motor with a fine tooth comb.

When the RPMs sit in that vibration range, the CEL comes on. But turns off after 3 or 4 seconds. But it will come on every time.

I think my next move would be to remove the Valve Cover and have a look see.
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Re: Engine Vibration/Noise

Postby Corey » Thu May 31, 2012 5:26 pm

Does it save a code?
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Re: Engine Vibration/Noise

Postby awolo » Thu May 31, 2012 5:39 pm

The light never stays on, so i'm assuming, it does not????

I could be wrong though.

I have no idea how to check and being a 91, i cant hook it up to my local reader.
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Re: Engine Vibration/Noise

Postby Corey » Thu May 31, 2012 5:50 pm

Even if the light turns off, it likely saved the code.

Because its a 91, all we need is a paper clip :)

http://www.turbocelica.nl/howto-errorcodes.htm
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Re: Engine Vibration/Noise

Postby awolo » Thu May 31, 2012 5:58 pm

Looks like ill be checking for codes ASAP!

Thank you so much for this info.

Ill be sure to report back.
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Re: Engine Vibration/Noise

Postby belanger33 » Sat Jun 02, 2012 3:49 pm

i have the exact same noise coming from the timing belt even though it has been changed....i have no exhaust leaks because everything has been taken care of about that. i can tell you that i have no codes because of it either....
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