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Author Topic: Turbo cuts off  (Read 118 times)


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  • Posts: 4
    • 91 Capri
Turbo cuts off
« on: May 08, 2018, 11:41:15 PM »

I have a 91 XR-2 when I turn the AC on My Turbo stopped working any help with this problem


  • Newbie
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  • Posts: 26
    • 92 XR2
Re: Turbo cuts off
« Reply #1 on: May 09, 2018, 10:35:23 AM »

This question is very vague. We need more information to help you.

Are you saying that the car responds poorly when the a/c is on? Or that there is no turbo boost at all?

There is no electrical connection between the turbocharger system and the a/c system.

On my 92 the car performance is degraded a bit when the a/c is on, especially at low RPM. The a/c system consumes a lot of engine power, as well as a fairly high load on the electrical system, which causes a higher load on the engine from the alternator.

Estimate are that a/c compressor operation consumes anywhere from 4 to 11 horsepower. That doesnt include additional load from the alternator to run the compressor clutch, the blower moter, and both condenser cooling fans.


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  • Posts: 5010
    • 91 BPT AWD Capri & 1991 XR2
Re: Turbo cuts off
« Reply #2 on: May 10, 2018, 09:24:28 PM »

The turbo won't just "shut off" like he says, we do need some more information

Does this happen when you're driving? Any other symptoms? What troubleshooting have you done?
1.8L Turbo All Wheel Drive Capri... the "GTXR2"