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john aka eauto
john aka eauto, The Car Guy
Category: Mazda
Satisfied Customers: 15064
Experience:  ase tech,shop owner
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I have a 1996 Mazda four wheel drive b4000, the idle

Customer Question

I have a 1996 Mazda four wheel drive b4000, the idle fluctuates
Submitted: 1 year ago.
Category: Mazda
Expert:  john aka eauto replied 1 year ago.

is the engine light on?

Customer: replied 1 year ago.
No
Expert:  john aka eauto replied 1 year ago.

it does this all the time?

Expert:  john aka eauto replied 1 year ago.

which motor?

Customer: replied 1 year ago.
It was fine then it it started having a little problems starting and then it started doing the thing with the idol. It goes up and down but some times idoles right
Expert:  john aka eauto replied 1 year ago.

4 or 6 cylinder?

Customer: replied 1 year ago.
6 cylinder
Expert:  john aka eauto replied 1 year ago.

3.0 or 4.0

Customer: replied 1 year ago.
4.0
Customer: replied 1 year ago.
Also just changed out the alternator but it ran fine for 2 weeks after I did
Expert:  john aka eauto replied 1 year ago.

do you have access to a scan tool? can you clean the throttle body and maf sensor? do you know how to check for vacuum or intake leaks?

Customer: replied 1 year ago.
I think I can access the tool And I have already clean the throttle body. don't know what the MAF sensor is but I'll find out is that something I can clean never have tested vacuum or intake leaks
Expert:  john aka eauto replied 1 year ago.

I would check for pending or history codes, the mass air flow sensor is located between the air filter and the throttle body, any auto parts store sell mass air flow sensor cleaner

Expert:  john aka eauto replied 1 year ago.

if cleaning the mass air flow and throttle body o no help, then you would need to check the iac (idle air control) they are common to fail and the next step would be to check for intake and vacuum leaks

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