2.3L Mazda 6 mild rpm pulsation - Engine Troubleshooting


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2.3L Mazda 6 mild rpm pulsation

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MISteve
New User

Nov 28, 2019, 6:14 AM

Post #1 of 4 (1819 views)

2.3L Mazda 6 mild rpm pulsation	Sign In

rpm pulses very mildly and regular - less than 100 rpm pulses about twice per second - tach barely moves. It happens at idle, highway speed and everywhere in between. Quiet for 10 seconds after start, then it begins. It sounds like it is searching; overshoots, undershoots. Interferes with acceleration. 114K miles. 2006

Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Nov 28, 2019, 8:24 AM

Post #2 of 4 (1815 views)

Re: 2.3L Mazda 6 mild rpm pulsation	Sign In

Start out checking for any stored trouble codes. If there are any codes, post the numbers here before going any further.

If no codes found, then check carefully for any vacuum leaks and then clean the throttle body with some throttle body cleaner to include both sides of the throttle plate and surrounding bore.

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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.

MISteve
New User

Nov 28, 2019, 8:57 AM

Post #3 of 4 (1808 views)

Re: 2.3L Mazda 6 mild rpm pulsation	Sign In

Thanks.
No codes.

I was looking at MAF and throttle body cleaning videos this am! Cheap.

Vacuum leaks - I'll have to check that.

Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Nov 28, 2019, 9:00 AM

Post #4 of 4 (1806 views)

Re: 2.3L Mazda 6 mild rpm pulsation	Sign In

Also check for any air leaks in the intake snorkel between the MAF and the throttle body.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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.

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