We have replaced the MAP sensor, the throttle position sensor and the fuel pump. None of these things made any difference. Also the problem is worse in warmer weather.

  • Try cleaning the Mass Air Flow (MAF) and Intake Air Temperature (IAT) sensors. Jul 6 '15 at 0:01
  • See if you have someone that will let you try swapping the coil pack, its a common place for things to go wrong its location in top of the engine. Diagnostics will go a long way, test fuel pressure, check wiring to your CPS (Crank position sensor) on the front of these engine. These car's do not have MAF, they are pure Air Temperature and RPM fuel mapped cars. This car doesn't have a MAP on this car, you probably replaced the IAT. On the stall? Is it as soon as you release the throttle and push in the clutch, or once you've stopped completely? Do the revs drop properly or do they hang?
    – Chris
    Jul 7 '15 at 2:14
  • The stall is when I push in the clutch. If I cannot give it gas soon enough it stalls. I'm not sure what you mean by "do they drop or hang", I can tell when we are going to stall as the RPMs go below 500
    – Marie
    Jul 10 '15 at 12:03
  • Also for some reason it stalls less often if the air conditioning is on??? strange
    – Marie
    Jul 14 '15 at 15:26
  • @Chris - You are right it doesn't appear to have a MAF. Every modern fuel injected car will have a MAF or MAP, with a lot of them having both. The Cavalier absolutely has a MAP sensor (PN: 12614970). To the OP, I know what the issue is, it's just not coming to mind right now ... I'll see what I can do later to pull something up. Jul 27 '15 at 10:38

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