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Car chokes when AC/heater is on.

(2011 Ford Fiesta)
in Kansas City, MO on December 06, 2018
Sometimes while driving there can be a moment where my car seems a little weak when I press on the gas. When I have the AC/Heater on there are times where the car will start to choke, on occasion sometimes I will completely stall out at stop lights. The AC/heater also doesn't push out air as much as it used to. I know a couple of years back my father changed the oil and while he is a good mechanic he's rather forgetful and forgot to put the cap on and by the time I realized it oil had shot all over my engine. There was another incident where I had my oil changed at a shop and they didn't tighten the filter on tight enough. I'm just wondering if these could have possibly caused this problem. I need alot of work on my car such as new shocks and brake pad. I'm just worried with repairs cost with some much work that I need. Any answers or help would be grateful and thank you for your time.
What seems to make the problem better or worse? When AC is used most frequently
How long have you had this problem? A little over a year
Tags: engine choking, ac, heater, loss of rpm while drivin, ford, fiesta
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Popular Answer
on December 06, 2018
It's doubtful the oil cap incident from a long time ago is causing this. A tech will need to start by scanning the car's computer for codes. Your blower motor could be going out or there is a restriction in the system for the air flow issue.

Ultimately I suggest you bring it to a shop for a full evaluation. It's tough to diagnose issues like this without looking at the car.
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