Hey! Having some issues with my Ford C-Max (2007) and wanted to ask if anyone’s had something similar happen.

So the car starts having trouble when I shift into first and give it a bit of gas - if I give it too little gas it just dies. Now it’s started doing the same thing in second gear too. When I first start the car and let it idle, the RPM drops every 10-15 seconds or so (from about 900), but it gets better after running for a while.

Got the yearly checkup recently and everything was fine, but then this started happening. Also got a check engine light that keeps going on and off every other day. It’s pretty cold here, like 5 degrees if that matters.

I’m going to take it to a mechanic when I have time but wanted to ask here first if anyone knows what it might be? Maybe the MAF sensor or something with the idle control?

Thanks!​​​​​​​​​​​​​​​​

  • skip0110@lemm.eeEnglish
    1·
    9 hours ago

    I was going to say vacuum leak too. Get some brake kleen or other flammable liquid and spray judiciously near different parts of the intake while the engine is running and listen for a change in idle to help locate it.

    Note: spray flammable liquids at your own risk. If you don’t know the risks and what to avoid have a mechanic do it.