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Jerry, Master Mechanic
Category: Car
Satisfied Customers: 17220
Experience:  ASE master, 30+ years. All makes and models. Trouble shooter, shop forman, service manager
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Car shuts off after I take foot off gas pedal

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Car shuts off after I take foot off gas pedal?

Hello and welcome to Just, Super mechanic here. About your vehicle.

There may be a problem with the idle air control circuit but you will want to make sure that the throttle body and idle air passages are clean.

You may want to do a throttle body cleaning on it. You can pick up some throttle body cleaner in most any part stores. You can follow the directions on the can but you will want to make sure that you give it a few shots with the throttle plate closed, so that the cleaner can get into the idle air passages.

Of course, you will want to make sure there are no vacuum leaks and that there is not any un-metered air that is entering into the intake, and that the air intake hose is on good and free of any cracks, thanks

Customer: replied 7 years ago.
We recently replaced a vaccum booster on the driver side. Could this be related to that?
That would normally raise the engine idle, if it were leaking. You may also want to make sure that it's not one of the ones that need a PCM recalibration as per service bulletin or recall.

Recall 04V175000: Engine Stalling Condition

DEFECT: On certain sport utility vehicles equipped with 3.0L V6 Duratec engines, during deceleration at vehicle speeds below 40 mph, the engine may stall, possibly resulting in a vehicle crash.

REMEDY: Dealers will reprogram the Powertrain Control Module. The manufacturer has reported that owner notification began on May 3, 2004. Owners may contact Mazda at 1-800-222-5500.

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