weird rattling noise from timing belt?

please help me find the problem.

camry 1998 4 cylinder 5s-fe 90,000 miles. it makes this loud annoying sound when in cold start. if i rev it from idle to about 2000 rpm, the sound gets louder. above 2000 rpm, the rattling sound cant be heard. after about 5-7 minutes, the car quiets down, but can still hear it. the sound is coming from the lower side of the housing for the timing belt, near the crankshaft. i bought it like this a few days ago. oil is full and clean. the owner told me it was the timing belt that was recently replaced. but why does it go quiet after the engine is warm if its the timing belt?

also, sometimes the brakes vibrate, even when the car is stopped.

Category:

Autos & Vehicles

Tags:

• camry
• toyota
• engine
• piston
• slap
• knock
• heat
• shield
• rattling
• shaking
• timing
• belt
• rod
• idle
• pulley
• noise
• sound

[justinsvidz]

Needs a Timing belt. The belt is slapping on the cover. Saw this many times.

I use to work at a Toyota dealer. either the previous owner is lying to you, or the shop that did the belt did a poor job of setting the tension. Either way the timing belt needs to come off, and the engine needs to be retimed, as it has probably jumped a tooth.

[thewhitenight]

@justinsvidz I know its bad, but I let it run since I uploaded the video. As of today, the noise seemed to have died down. I think the belt rubbed all the cover plastic off enough to give it proper slack. Im not sure about the timing, but I wonder if I should still get it checked.

[200twistatwista]

I use lucas oil stabilizer in mine with valvoline premium oil and mystery oil

I just use those with my oil and, it super quiets the engine.

[thewhitenight]

@200twistatwista wow ive never heard of lucas oil stabilizer. im gonna do an oil change soon, i might search this up. was your car louder before? how much did this quiet it by?

[TheAutogearbox]

I originally thought it was just mine, until I helped another guy jump start his camry... there was that exact same sound. I think there's just enough slack in the belt to vibrate against the cover. Somehow, the tensioner must tighten up after warmup, then things are fine. Other than that, the car runs completely fine. I usually just start it, throw it in gear, and keep driving until it warms up.

[thewhitenight]

@TheAutogearbox wow, i do the exact same thing and just turn on my music. however, when i start my other camry, i do notice some differences. the "normal" one has a higher idle on cold start (1600 vs 1200), and it feels smoother below 2000 rpm. does your camry vibrate under 2k rpm as well? and is the cold start idle below 1200 rpm?

[iMatt65]

Sounds very familier. I have a video of this on my page as well.

[kermitsings559]

needs a new tension pulley, i replaced 2 on these cars before,

[milofonbil]

2001 Honda Accord 2.3L 4cyl I had this exact same noise it goes away after the engine warms up. After unscrewing the three 12mm screws from the exhaust heat shield it was evident that one of the bolts that secured the exhaust manifold had severed and the exhaust gasket had blown. Replaced all of the stud screws and nuts with a new exhaust gasket ... problem solved.

[Cannamechanic]

crank bolts come loose once in awhile and make that noise when the pulley rattles.

[mwngw]

I have the exact same sound in my 5SFE...been trying to track it down. Mine sounds worse at startup then quiets down some. Thanks for posting this.

[cooldewd]

its water pump

[jaymanxxxx]

pully bearings.



[thewhitenight]

@grigoriantos i suspect the same thing. ill be driving this thing down to LA and back to SF. i hope it doesnt break down on me :(