After much investigation of temp sender, fuel injectors, and ignition parts, the problem was traced to the ECU. On replacement, the problem was fixed.
Problems for specific Toyota Camry years:
Car problem reports
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Newest reported Toyota Camry problems
The car seems to go out of alignment on all four wheels frequently. I've purchased an unlimited alignment plan from a local auto service provider and I get it done every month or so. It's always out, sometimes significantly.
I had the rear adjusters replaced since they had rusted to the point that they couldn't be turned anymore.
Engine will not idle after a battery change especially when air conditioner is on. Read this is common problem. The computer that controls the engine idle loses it's memory and no longer remembers how to idle. Fix by driving the car between 5 and 10 miles. This puts the lost data back into the computer ECU and now it idles just like it did prior to the battery problem.
At higher mileages, an anti-lock brake system wheel speed sensor may wear out and illuminate the ABS warning light. It is recommended to replace the sensor with a factory part and be sure to clean all rust and debris from the mounting area because the mounting distance is critical. Failure to do so may result in the new sensor setting false trouble codes. Be sure to check the condition and runout of the front wheel bearings on the 2WD and 4WD vehicles and the CV joints on the 4WD vehicles since worn wheel bearings and/or CV joints can cause the ABS trigger rings to rub against the ABS sensors and damage them.
The intake manifold makes rattling sounds when you depress the gas pedal.
There is a manufacturing defect in the baffle that is loose inside of the intake manifold.
The fix is to replace the intake manifold.
The Check Engine Light may illuminate with code P0770 and/or P0773 stored. This would indicate a fault with the 3-way lock-up solenoid which could be defective and may need replacement.
The valve cover gaskets have a tendency to leak oil, especially the one near the firewall.
Driving over bumps causes loud, annoying noises in the body of the car. If the noise is a groaning or creaking, it can be improved by lubricating the rubber joints in the suspension system. If the noise is a rattling sound, the problem is likely wear and tear on the upper mounting plate for one or more of the suspension struts.
The EGR System tends to get restricted or blocked with carbon after 100,000- 125,000 miles which will cause an emissions test failure for NOX. If the EGR system is equipped with an EGR temperature sensor it will trigger a Check Engine Light for improper EGR flow. The repair is to clean out the EGR passages and the EGR Temperature sensor. Our technicians tell this repair is pretty straight forward and takes about 1-1.5 hours. It is also wise to verify the EGR system components i.e. the Transducer, EGR Valve and VSV Solenoid at this time.
Cars equipped with an automatic transmission might experience a hesitation when accelerating. Revised software for the on board computer is available which may correct this problem. Software revisions are commonly most helpful on newer vehicles. once the mileage builds up a worn component could cause similar problems. Whenever major transmission work in performed, the transmission software should be updated as necessary.
The Evaporative system may have problems with the vapor canister releasing charcoal pellets that plug the vent valve. Typically a Code P0441, P0442 and P0446 will be set. The key code is the P0446 which is a vent valve electrical failure. The proper repair is to replace the entire canister with all the valves as a unit. This is located on top of the fuel tank and is expensive. Our Technicians tell us that for awhile Toyota was covering these problems, but this may have changed. It would not hurt to call the dealer if this problem occurs to see if Toyota is still helping with these repairs.