I have a 2002 tacoma 2.4 x-cab, it runs great most of the time. Lately, once in a while, the idle will drop very low, and even on occasion will die. It will restart, but I usually have to keep my foot on the pedal so it won't die again. Is there an idle solenoid or something of that nature to check?

SOURCE: 2003 Toyota Tacoma SR5 PreRunner

jack up front end spin wheel, could be a calliper hanging up how old is the brake fluid.

SOURCE: 2000 Camry Starts but dies down right away

Hello

I just worked on this problem a couple of days ago. If the motor is a 3.0 liter. The idle control valve is located at the bottom of the throttlebody assembly right below the bore for the throttle butterflies..What usually causes this valve to go bad is the mechanical part of the sensor sticks as it becomes sludged or carboned up. Manufacturer claims that the valve cannot be cleaned and should only be replaced....It's a high dollar repair to replace this sensor as your engine coolant flows through this electrical valve. The valve idles the car fast when cold, as the antifreeze gets hot the valve drops the idle down.....I have successfully cleaned several of these valves and cured the dying problems...
First remove the air filter top cover and the tubes that connect to the throttlebody. In the right throttlebody you will see a port right before the butterfly. Under the throttlebody you have a black plastic sensor with a 2 wire terminal. Remove the 2 phillps screws and pull off the electrical part of the valve. you will feel a magnetic pull while removing. Remove slowly and catch the black sealing oring, and there will be a metal washer also.. The shaft that is exposed is the mechanical control of the valve. Rotate the shaft and it should feel sticky if bad..Using a throttlebody spray cleaner spray into the small square port of the right bore, rotate shaft and spray until stickfree.....Reassemble

Marvin

• 85242 Answers
• Posted on Jun 11, 2009

SOURCE: Idle very low then turns off

this is the cause.
Here is the common cause of surges, stalls at stops, slow idle speed, erratic idle speed, rough idle and engine hesitation (and other problems), it is in most cases the idle speed control air-bypass valve and or throttle valve and upper intake, these area's get full of gunk and combustion residue over the miles and cause idle issues (stalls, low idle) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

SOURCE: 2003 Camry won't stay idling after I changed battery

This is extremely common :)

With time your throttle body gets gummed up with oily residue from the PCV system. As this happens, the computer adapts to the restriction it causes in the throttle body.
When you unhook the battery, these learned values are lost and the default settings for idle control are used. Unfortunately the default settings are no longer sufficient to keep the idle correct with it all gummed up.

Take your intake hoses off the throttle bodies and clean the insides (open the throttle plates for better access) with a rag and some brake parts cleaner or throttle plate cleaner, available from your local parts store.

Reassemble and start the car, your idle problems should be gone immediately.

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