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Car jerks while driving

Tiny
SONIMJN
  • MEMBER
  • 1999 HYUNDAI SONATA
  • 105,000 MILES
Hard to pick up normal speed, seems like it jerks when it has to change gear, heat not working gas pedal has to be pushed all the way sometimes to gain speed. Harder going up on hills, doesn't go fast enough, seems to jerk whenever I try to increase speed as if it jerks to change gear. Heat just stopped working, checked anit-freeze fluid, it's full and no water leaking. Not sure what is wrong with it. Transmission fluid is also full.
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Thursday, March 15th, 2012 AT 8:08 PM

5 Replies

Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
Tune up? Possible CAT plugged?
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Thursday, March 15th, 2012 AT 8:20 PM
Tiny
SONIMJN
  • MEMBER
  • 3 POSTS
No heat, only cool air blows
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Friday, March 16th, 2012 AT 1:36 AM
Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
Do you have auto or manual temp control. Is CEL coming on?
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Friday, March 16th, 2012 AT 5:47 AM
Tiny
SONIMJN
  • MEMBER
  • 3 POSTS
Yes, check engine light is on, I think its manual temp control, its got knob for hot/cool and buttons for AC, defrost and a knob for different sides of air from vents
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Friday, March 16th, 2012 AT 3:38 PM
Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
You need to get light codes read and post back with them.
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Friday, March 16th, 2012 AT 5:08 PM

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