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2003 Pontiac sunfire popping sound when going over bumps.

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  • Cars & Trucks Master
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Could be several things in the suspension including the strut mounts.
Any shop that does front end alignments should be able to diagnose it and give you an estimate.

Posted on Apr 24, 2013

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Posted on Jan 02, 2017

jimmybrown67
  • 835 Answers

SOURCE: When my 2003 Pontiac Sunfire starts the RPM's go

IT COULD HAVE A VACUUM LEAK OR SUCKING AIR AROUND THROTTLE BODY. IDLE AIR SENSOR HAVE IT CHECKED.

Posted on Nov 18, 2010

greg_margo
  • 1959 Answers

SOURCE: 2003 Pontiac Sunfire sending unit

Check the pressure in the low side A/C line. My guess is the refrigerant is low and needs recharging.

Posted on Apr 26, 2009

  • 1 Answer

SOURCE: light on by fuel gauge (arrow shape going downward) 1999 sunfire pontiac

Check your engine coolant.

Posted on Jun 10, 2009

cincinaty5
  • 132 Answers

SOURCE: I am a 2003 pontiac sunfire. The high beam lights

make sure the switch is good they work off a ground bases .

Posted on Sep 01, 2009

  • 239 Answers

SOURCE: When I apply the brakes(front disc/rear drum) on

The brakes themselves would not likely be the cause of a popping sound, but the problem may only show up during braking. The shake could be from loose steering parts or from distorted rotors. Rotors get quite hot during braking, and the faster you drive and the harder you stop the more heat they have to take. Have the brakes inspected by a qualified brake technician. (A lot of shops offer free brake inspections.) A tech will also note problems with the steering parts connected. Give the tech as much info as possible - does it happen during turns, only when braking, when accelerating, etc. The more information you supply the better the chance of catching the problem.

Posted on Dec 18, 2009

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My sunfire is automatic, and the gear shifter is VERY LOOSE, doesnt catch in any of the drive options. just slides up & down, with no pressure


That sounds like a mechanical issue in the shifter itself. You need to take the console apart to see what's going on. I doubt it is the transmission itself.

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