CCRM
Thread Starter
Joined: Aug 2018
Posts: 23
From: Georgia
Thanks for your feed back. See here's the thing tho the ac compressor, clutch wouldn't cut on or engage so I ran a toggle switch and hot wired it basically. But when I'd cut the ac on and be driving it'd stall out coming to a stop. I was thinking the IAC. But my mechanic told me that it was probably still the ccrm and that it was supposed make it idle up.
Banned
Joined: Jan 2018
Posts: 2,327
From: Pennsylvania
ECM controls fan based on sensor readings. When the A/C is on, the fan should kick on
high. ECM also adjusts A:F curve based on the A/C compressor load. If it doesn't
see that the compressor is on, then it won't adjust fuel for that load, and it can stall,
especially with the fan on HIGH.
It can be the IAC valve too. If it won't open up, then the idle isn't adjusted
for the load.
high. ECM also adjusts A:F curve based on the A/C compressor load. If it doesn't
see that the compressor is on, then it won't adjust fuel for that load, and it can stall,
especially with the fan on HIGH.
It can be the IAC valve too. If it won't open up, then the idle isn't adjusted
for the load.
Thread Starter
Joined: Aug 2018
Posts: 23
From: Georgia
ECM controls fan based on sensor readings. When the A/C is on, the fan should kick on
high. ECM also adjusts A:F curve based on the A/C compressor load. If it doesn't
see that the compressor is on, then it won't adjust fuel for that load, and it can stall,
especially with the fan on HIGH.
It can be the IAC valve too. If it won't open up, then the idle isn't adjusted
for the load.
high. ECM also adjusts A:F curve based on the A/C compressor load. If it doesn't
see that the compressor is on, then it won't adjust fuel for that load, and it can stall,
especially with the fan on HIGH.
It can be the IAC valve too. If it won't open up, then the idle isn't adjusted
for the load.
Thanks man. I'm going to start with replacement CCRM and go from there. First mustang.
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