mazda 323f idle problem

[markyboi]

hi i have a mazda 323f model 1996,
my problem is that when i turned on my a/c the idle of my car becomes higher and lower.
what could be the reason for that?
How could i rectify it?

 

[Guybo]

have you checked for vacuum leaks?

 

[markyboi]

yes everything seemed fine, but without my a/c turned on the idle of my engine stays at 1000rpm

 

[T9 man]

Greetings and welcome to our TorqueCars forum

 

[Guybo]

If you have the A/C off and put the blower on high do you have the same issue?

 

[markyboi]

no, the rpm remains thesame, then when i turn on the A/C I noticed that my rpm became 500rpm then it will go up untill 800rpm then go back to 500rpm again.

 

[markyboi]

only when my A/C compressor is in contact with the engine there goes the abnormal idling.

 

[st24]

Hello and welcome.

 

[markyboi]

I consulted to a mechanic and he said that my servo unit maybe damaged...

 

[markyboi]

If you have the A/C off and put the blower on high do you have the same issue?

i dont have the same issue but i noticed that when i use my park lights and head lights at it goes the same with my A/C turned off.

 

[markyboi]

Hello and welcome.

thanks

 

[markyboi]

If you have the A/C off and put the blower on high do you have the same issue?

can also the alternator make my engine idle rough?

 

[Guybo]

If it isn't putting out enough it can. Sometimes when an alternator or voltage regulator starts to go it'll put out good voltage under normal load, but with extra electrical load or engine load it may put out less voltage. If your engine is loping (a rolling idle that gets faster, then slower, then faster and so on) is often a problem with vacuum. Check the PCV and EGR systems. If those rubber hoses get weak over time sometimes they collapse when extra vacuum builds up.

 

[markyboi]

i also cleaned my IAC and it showed a very little improvement but still have the same problem

 

[obi_waynne]

Hello and a warm welcome to TorqueCars from me the admin! Really nice to have you along.

The aircon will usually slow up an engine as it draws lots of current, unless this is dramatic I wouldn't worry about it as it's quite normal.

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