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My 2001 nissan maxima stalls when in drive and stopped, i.e., traffic light, stop sign, etc. The idle speed appears to be normal, but it starts to drop and then engine stalls. The car can be started without any problem and runs great when moving.
The check engine light is off and there is no codes in the computer.
The problems is happing at about every stop,
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the problem is fuel related and nowhere else
it indicates a vacuum leak , either at the manifold , brake booster , transmission actuator hose/unit for the transmission or hoses that control under that dash
bad at stopping at light indicates that it is the brake booster
simple test is to put the hand brake on, start the engine and if it idles ok , put your foot on the brake
if still ok move vent controls ,
if with the foot on the brake it plays up , replace the brake booster
IAC problem . You have a problem with you idle air control valve. So when you stop at a stop sign the RPM goes to low and you stall out. IAC controls the desired speed necessary to keep the engine running.where is this sensor at is at the rear of the engine compartment under the thtottle valve. Here is what you need to inspect for. If you have a vacuum leak in you engine system, the IAC cannot compensate or control and you get rough idle. Check any loose vacuum connections .
Sounds like your idle air control valve, after time they get dirty and cause low and/or rough idle. They also cause vehicle to just die when idling or taking off from a stop sign. Unforntunately they cannot just be cleaned, as this ruins the finish inside of the unit. Check your local parts store, they can be pretty expensive units to purchase; however, they are usually fairly simple to install, good luck! :)
this is caused by a sludged up intake track and idle speed control valve. do the following exactly as stated in the instructions.
, 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.
You may have a problem with idle speed control motor or ETC as GM calles it. here is a photo and a price from rockauto.com.
STANDARD MOTOR PRODUCTS Part # SA4 Motor Assembly
$110.99
These models had a problem with the electronic control modules, and this is what controls the idle speed. Sometimes they just need to be cleaned, but sometimes they are defective. Volvo has extended the warranty on some of them to 10 years or 200,000 miles if it is found to be defective.
Every answer here is wrong. This has been driving people nuts for 15 years. The problem is the engine wiring harness which has a bend going past the right strut tower, Nissan had a service bulletin on this in September of 1999, Google it, it's in pdf.
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