Within the last 3 days the car has begun making.

Tiny
BABYFROG921
  • MEMBER
  • 2004 CHEVROLET IMPALA
  • 81,000 MILES
Within the last 3 days the car has begun making violent jerks and thumps after coming to a stop and then accelerating. It feels like the car cant shift I honestly thought the transmission fell out after the last thump. It also occurs when just slightly applying the brakes and then back to the gas. I have checked all fluids, had all carbon build up burned off and had hoses and wires inspected.
Wednesday, October 17th, 2012 AT 6:26 PM

5 Replies

Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Did you check for trouble codes?
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Wednesday, October 17th, 2012 AT 7:56 PM
Tiny
BABYFROG921
  • MEMBER
  • 3 POSTS
Only 1 code appeared with the engine diagnostic test and that was P0801, would a bad EGR valve cause the issue?
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Friday, October 19th, 2012 AT 7:25 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Can you reconfirm the trouble code? P0801 is not listed in our database for this vehicle.

†P0801 †Reverse Inhibit Control Circuit Malfunction is found for generic description and is a fault with the transmission inhibitor switch, not EGR system.
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Saturday, October 20th, 2012 AT 12:57 PM
Tiny
BABYFROG921
  • MEMBER
  • 3 POSTS
Im sorry the mechanics handwriting is a little messy it could be P0401
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Saturday, October 20th, 2012 AT 1:05 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
P0401 is a fault with EGR and can afffect engine performance but not the transmission violent jerks.

Since you are not sure of the code, get it checked again.
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Saturday, October 20th, 2012 AT 1:46 PM

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