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Idle speed too high, when in neutral
1992 Mazda B2600

Idle speed too high, when in neutral

(1992 Mazda B2600)
The idle speed is approx. 2500 RPM when first start, doesn't drop down. Seems to run ok, and RPM' is OK, except when shifting, or in neutral??
Tags: mazda, b2600
1 answer & 0 comments
Popular Answer
on September 12, 2017
There is a high amount of air getting into the engine due to an air intake leak, improper sensor readings sending false data to the engine's processor causing it to call for more air and fuel, or possible a sticking idle air control valve.

Testing is required to see what has failed.
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General Diagnosis
$88 - $111 Learn More
on September 12, 2017
There is a high amount of air getting into the engine due to an air intake leak, improper sensor readings sending false data to the engine's processor causing it to call for more air and fuel, or possible a sticking idle air control valve.

Testing is required to see what has failed.
Sign in to reply

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