hey can some one please find me or type up a short how to on adjusting your idle for some reason mine seems kinda low.
thanks

 

Should be a screw on the BAC that allows to you adjust your idle.

 

It's in the FSM.
DL'able copies of the FSM are all over online.
Search?


-Ted

 

Yeah! you'll get flamed if you ask a question about idle problems. Of all the posts on the forum, this one topic probably outranks them all. In the archive theres a thread about addressing idle problems. Make sure you read it.
1) Make sure the TPS is properly adjusted. Use the twin light method and make sure that at idle the test shows a single light lit.
2) For Series 5 FC's adjust the idle speed by the screw on top of the throttle body. First you have to ground the initial set coupling....read the posts and the Factory Service Manual
3) Still having idle problems? look for possible vacuum leaks allowing unmetered air into the system.
4) Make sure fuel filter is not clogged up...make sure plugs and plug wire are in good shape
There are many posts on every possible idle problem. Do a search, read and do your homework.

 

yeah i went to the service manual to see what it said and it said adjust screw on the BAC and i did that but it didnt do anything, which is why i made this post

 

I thought I would not start a new thread - instead post similar problem here...

I found there was NO idle adjust screw in the BAC --- I stick my screwdriver in there and it doesnt hook into anything... tried both a flat head + phillipshead with no luck..

Ideas?

 

Not all BAC's have the idle adjust screw in them, My '91 N/A does not. The screw on top of the Throttle Body adjusts idle. Warm engine up to normal operating temp, ground the initial set connector and use this screw to adjust idle speed to 700-1000. Remove the initial set ground and you're done. If idle's still not right, adjust TPS and go through the idle speed adjust sequence again. Still not right? (1) You may have vacuum leaks (2) Your BAC may be bad (3) Engine air thermosensor may be bad (4) Water thermosensor may be bad. You have to eliminate them one at a time. Like I said, search and read on idle problems. We've all had them and a lot of information has been posted.

 

ok i was told that my BAC dosent adjust idle because its not hooked up he said there was a screw on the throttle body that adjusted it , he said it could be reached whith a really long screwdriver or by removing the intercooler
i looked and could not find this screw so am i going to have to take off the intercooler
please help thanks

 

to remove the intercooler...unbolt it from the 4 corners, loosen the clamp on the left front hose, loosen the clamp on the rear right hose, remove the 2 or so small hoses on the right rear, and pull up. simple.

 

So why won't you put the connector on the bac??????????????????????????????

 

because i dont have it and the idiots at the mazda dealership dont know **** and said they couldnt order it for me

 

If the connector is missing off the two wires for the bac, you can crimp some female connectors on thewires and insert them in the jack on the bac. Just make sure the two wires never touch eachother with power on the car (key ON).

 

or....
saying this because i found them dangling down the side in contact
and yes the car was on.