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Sudden acceleration

Tiny
LIZ VIDRIO RIOS-BRETZ
  • MEMBER
  • 1994 MERCURY COUGAR
  • 32,000 MILES
My car will suddenly rev up while I am driving about 40 to 60 MPH. It will go to about 4-5 rpm's. It will go in for a few seconds can and can not be at same time as when the car down shifts, it will then go back to normal. The first time it happened was on a record heat day. I was running the air conditioner, but temperature gauge was normal. I may add that I live in the desert and it gets about 115 degrees.
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Sunday, July 3rd, 2016 AT 3:22 PM

1 Reply

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check transmission fluid it may be a transmission problem. If fluid is dark brown or black or discolored have a transmission professional look at it.
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Sunday, July 3rd, 2016 AT 4:16 PM

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