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#1
10-16-2003, 06:31 PM
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engine power loss when a/c is on
1997 bonneville se
when driving on the highway consisent speed with a/c on, then try to accelerate and nothing happens have to pump 2 -3 times then it goes ,but with a/c off no problems. Any ideas? 
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#2
10-16-2003, 06:55 PM
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Re: engine power loss when a/c is on
I believe the car is in high gear, and the A/C does draw power from the engine, so you'r having to put the pedal down, to get a "kickdown," that is, an automatic transmission downshift. Without the A/C, it's apparently not necessary. watch your tach next time it happens, and let us know.
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#3
10-16-2003, 08:04 PM
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Re: engine power loss when a/c is on
Your shift pattern is different with AC on/ off and you might be noticing it more with the AC on. The AC system is a big power hog on the engine!
__________________
Shop Foreman Buick Pontiac and GMC dealership ASE Master Tech ASE Advanced L1 GM Master tech Licensed Aviation mechanic
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#4
10-16-2003, 09:57 PM
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tman2093
Ex. driving 65 mph and want to go 70 u give alittle gas and nothing happens , tach stays the same and acts as if it wants to die,after pressing the peddle abit (play with it) then it goes, and it does it between 55-70 only Flatrater i know it is a power hog but it should not be doing that, (i spoke with the previous owner and it never did it to him)
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