Slight engine stutter when AC is running?

[FX86]

Originally Posted by humfrz

Dang hot rod ........



humfrz

it always happens in 1st and 2nd gear...sometimes 3rd..4th gear only in mexico

[Ultramaroon]

Originally Posted by select20

Thanks for all the replies everyone. Much appreciated. Will take it to shop and get it checked just for peace of mind.

Please do follow up if you learn anything. Good luck.

[HotlavaFRSGT86]

Originally Posted by select20

This only happens when it's like 90+ outside and it's very noticeable. If I'm running the AC at night or when it's not as hot, it never stutters. Also, it's a consistent stutter, like every 3 seconds.

Really curious if anyone else has had this.

Yea like some have said here, its a smaller engine problem, the AC kicking on and off bogs a small motor, mine used to do it all the time sometimes dropping As low as 300 rpm until i bought the Vishnu OFT, now that it has the new software and a higher idle it doesn't do it anymore. The Vishnu tablet was a great upgrade and puts the idle where it should be, around 800, these motors idle too low from the factory.

[Ultramaroon]

Welcome to the forum.

Originally Posted by HotlavaFRSGT86

Yea like some have said here, its a smaller engine problem, the AC kicking on and off bogs a small motor

Not every three seconds.

The Vishnu tablet was a great upgrade and puts the idle where it should be, around 800, these motors idle too low from the factory.

No. 650 RPM has been a standard for many decades.

[HotlavaFRSGT86]

Originally Posted by Ultramaroon

Welcome to the forum.


Not every three seconds.


No. 650 RPM has been a standard for many decades.

Yea mine wasn't every 3 seconds but each vehicle no matter if the same model and make varies in operation. And yes an average of 650 rpm has been a staple for an idle for a few decades, but it doesn't mean that its a great idle for these engines. Mine before my Vishnu tablet install would idle as low as 500 occaisionally and would feel like it wanted to stall, especially when i would put the AC on.

[tofurun]

Originally Posted by Ultramaroon

Welcome to the forum.


Not every three seconds.


No. 650 RPM has been a standard for many decades.

If u turn on the AC but turn the fan speed down low it can happen that often. The compressor will kick on and off at low fan speed. If the fan is turned high the comp will stay on and it'll only have a one time bog when it kicks on the first time. If it's bogging and u see the compressor staying on then it's not the AC doing it