[FOCUS1833]

Today i enecountered my car rpm dipped to zero but the engine did not stall.

The whole scenrio was, coming to stop, slowing down with the clutch neutral stepping brake at this instance the rpm dropped to zero. But the engine did not stall, the rpm shoot back to 800rpm by itself. This whole thing happened 3x when the car coming to stop. It also accompanied by a rattling noise in the engine bay. The sound is like a relay cannot latch and keeping energizing.

All these happened with the aircon on and the engine is cold (after start and move off) and after 15min of drive the engine back to normal no rpm dips at all.
Anyone experience this before. Thanks.

 

[direboi]

what year and model foci do you drive?

 

[FOCUS1833]

Mine is a 2004 focus mk1 1.6L manual

 

[SVT_BMXer]

Ive noticed when i have my AC on and take it out of gear coming to a stop, sometimes the RPM's dip to around 500 and my bat light will flash for a second. I just dont run my AC when im driving in town so i dont have the problem anymore.

 

[FOCUS1833]

Hi SVT_BMXer i have the same problem. The rpm will dips 500 but no batt light.
But these few days the rpm dips even lower sometimes to 0.

 

[FOCUS1833]

While this morning the engine rpm dips again to zero but this time it stalled.
I restart the engine with the aircon off everything back to normal.