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| Engineering/ Technical Ask technical questions about cars. Do you know how a car engine works? |
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#1
07-08-2010, 09:34 AM
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lost power while driving
it happens to lose power when I switch on the car air conditioner (the car engine stopped at all the moment I press the brake pedal). same is when I am going uphill, I cant accelerate even if I press the gas pedal at maximum.
I have a Golf, '96. I would like to know where to start diagnosing the problem. thank you 
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#2
07-08-2010, 02:57 PM
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Re: lost power while driving
I'd suggest you start by confirming there is no vacuum leak, then perform a tune up (including fuel and air filters). If that doesn't fix the issue, check fuel pressure and make sure the idle air control system is functioning properly.
-Rod
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#3
07-16-2010, 11:45 AM
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Re: lost power while driving
There is a relay and/or a vacuum-actuated valve that is supposed to increase the idle speed of the engine when you turn the A/C on. If they are not working, then the A/C load may be too much when you are at a stop. Check the relay, vacuum lines, and wiring to/from these parts.
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