Is it always idling high?? Or just when you accelerate?? If its running high all the time, suspect a vacuum leak( unplugged vaciuun hoses, intake manifold leak, etc.) If it only does it when you accelerate and it wont come back to idle, suspect a bad tps or something sticking and letting your throttle to stay open.
SOURCE: idle
Most likely a failed "IAC"; Idle AIr Control valve; located on the side of the throttle body.
SOURCE: DRIVE BELT ON 2002 TOYOTA CAMRY
If you are referring to the vehicle having a "Timing Belt", no, it does not have one.
The 2002 Camry 4 cylinder has a Timing CHAIN, and does not need to be replaced.
SOURCE: 2002 camry battery changed, dies in idle
When you take your battery out and put a new one in all your computer controls have to be reset. You need to drive the car at 55 MPH for 2 min or so, stop, go through normal drive cycle, stop and go and then if it don't straighten out you need to clean the throttle body and the idle air control valve. Hope this helps. PHil
SOURCE: 2002 camry battery changed, dies in idle
Check the manufacture's Cold Cranking Amps (CCA) rating. Some manufacturers recommend a minimum CCA. If your CCA is below the manufacturer's specs, it can cause your car to run erratically. This also can cause problems with your computer and give you faulty DTC's. (Diagnostic Trouble Codes - Service Engine Soon Light) This especially causes problems with General Motors cars. I'm always hearing of people with these problems. Let me know how it works.
SOURCE: 2002 toyota camry dies when I take my foot off the gas pedal
The ignition is too low (i,e, rpm). Increase it.
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