why my engine bad idle

1999 MAZDA PROTEGE
17,000 MILES
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K1N3T1C4
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  • 1 POST
when im on the 1 or evem the 2 speed while running the idle of the engine is doing some peak and are always bigger if i dont push the clutch and give more gaz . could it be a probleme with the intake or something like that ? i mean blocked egr valve
Oct 7, 2011 at 2:25 AM
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JACOBANDNICKOLAS
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  • 110,175 POSTS
Check for vacuum leaks, and check the idle air control valve. One other thing, if the check engine light is on, have the computer scanned. Most parts stores will do if for free. When done, it will identify where the problem is coming from.
Oct 7, 2011 at 2:28 AM