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Jumpy engine idle - Mazda 626 year 93


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vinp
New User

Sep 14, 2011, 9:58 PM

Post #1 of 3 (1678 views)
Jumpy engine idle - Mazda 626 year 93 Sign In

Hello,

This car has 2L engine. The engine idle is very unstable - rev from 900 to 2000rpm - even when the car is hot. It doesn't occur all the time and happen randomly.

Does anyone has experienced a similar problem and could help me finding the cause(s)?

Thank you.

Vincent


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Sep 15, 2011, 3:10 AM

Post #2 of 3 (1651 views)
Re: Jumpy engine idle - Mazda 626 year 93 Sign In

 You may have a bad IAC ( idle air control) but try eliminating any vacuum leaks and cleaning the throttle body first. Remove the intake snorkel, have someone hold the throttle wide open for you and scrub the back side of the throttle plate and surrounding bore with an old tooth brush and some carb cleaner. Be sure to spray some into the small holes next to the throttle plate. That should help stabilize the idle. If it still has a problem, replace the IAC.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



vinp
New User

Sep 15, 2011, 8:50 PM

Post #3 of 3 (1624 views)
Re: Jumpy engine idle - Mazda 626 year 93 Sign In

Thank you for your message. I'll try that.

Vincent






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