Engine stalls

Tiny
CHRISSYDENA
  • MEMBER
  • 2011 FORD FIESTA
  • 1.6L
  • 6 CYL
  • FWD
  • MANUAL
  • 72,469 MILES
When running A/C when coming to a stop car stalls. It does not do this when A/C is not on. Please help.
Saturday, September 5th, 2015 AT 3:30 PM

1 Reply

Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
If this only happens when the A/C is on, then we need to suspect the compressor is locking up or otherwise causing the engine to bog down.

So, let's start with checking the pressure in the system using this guide to find out if the compressor is operating.

https://www.2carpros.com/articles/re-charge-an-air-conditioner-system

If it is proper pressures according to the chart below then we need to suspect the RPMs are just dropping too low due to a possible due to a faulty air intake sensor. This can happen when the engine is bogged down due to the A/C, so we need to monitor the data with a scan tool. However, here is a guide that will help with these issues:

https://www.2carpros.com/articles/engine-stalls

Please run through this info and let me know what you find.

Thanks
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Monday, March 21st, 2022 AT 4:05 PM

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