Question about 2008 Chevrolet Cobalt

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My 2008 chevy cobalt wont turn over in temperatures 35 or below, unless it has already been running, and is still warm. Once the temp rises, car starts fine.

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  • Chevrolet Master
  • 1,650 Answers

You're running the wrong oil in your engine. It's too thick and won't allow the engine to crank when it's that cold. Go to a lighter multi-grade oil and no more problems.

Posted on Jan 12, 2019

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 261 Answers

SOURCE: Ford Crown Vic p0300 random cylinder misfire

take a look at the EGR valve it could be either vacum controlled or electronic either way what seems to be the problem is that the valve is stuck in the open position until the engine warms up you can gently tap the egr valve with a small hammer or a screw driver and you can see that it runs smooth, now if the egr valve is vacum controlled replace the valve. if it is electronoc controlled replace the valve and the module for the egr valve.

Posted on Nov 24, 2008

  • 3 Answers

SOURCE: 2006 chevy cobalt woulnt start lock light is on

Are you using the original key that came with the car? The chip in that key may have gone bad. Try using the spare key that should have come with the purchase of the car. You may also be having battery issues. If all else fails....call the people who really know how to rape you...DUM Dum dummmmm....the dealer

Posted on Dec 31, 2008

blueextc3221
  • 15935 Answers

SOURCE: 2008 Chevy Cobalt - care

replace the shifter assembly.I replace alot of them.use this bulletin as a reference.Subject: Various Concerns With Shifter and/or Ignition Key (Replace Shifter Assembly/Shifter Components or Ignition Lock Cylinder )


Models: 2005-2008 Chevrolet Cobalt

2005-2006 Pontiac Pursuit (Canada Only)

2007 Pontiac G5

with Automatic Transmission 4T45-E (RPO MN5)

Some customers may comment on any of the following concerns:

• The shifter is hard to move or binds.

• They cannot remove the ignition key.

• It takes high effort to rotate the key.

Cause 1
The shifter button may be sticking in the handle.

Cause 2




The pin that activates the micro-switch may have moved out of position (refer to illustration above). This causes the micro-switch to fail to engage when the vehicle is placed in Park. If this condition is present, the customer will not be able to remove the key from the ignition.





The illustration above shows the switch in a correct position.

Cause 3
Metal flashing left in the cylinder may cause a high effort to rotate the key.

Cause 4
The slider may be binding in the guides. This may cause the shifter to become difficult to operate.

Correction 1
Verify that the shifter button is inoperative by evaluating if the park pawl pin on the shifter assembly moves when activating the button. If the parking pawl does not move when the button is activated, the shifter handle will have to be replaced. Refer to Floor Shifter Control Knob Replacement in SI.

Correction 2
Important: A change has been made to the shifter assembly for service. The replacement shifter assembly will read PRNDIL (Park, Reverse, Neutral, Drive, Intermediate and Low).

Verify that the micro switch is out of position. Replace the shifter assembly. Refer to Transmission Control Replacement in SI.

Correction 3
Important: Refer to instruction sheet that is supplied with the lock cylinder kit. BO 47869 is an essential staking tool and must be used for the repair.

Replace the ignition lock cylinder. Refer to Ignition Lock Cylinder Replacement in SI.

Correction 4
Replace the slide indicator and guides in the shifter following the procedure below:

Apply the parking brake.
Remove the upper console trim. Refer to Trim Plate Replacement-Console Front in SI.
Remove shifter knob. Refer to Floor Shifter Control Knob Replacement in SI.
Remove the indicator plate. Use a flat-bladed screwdriver to release the locking tabs.
Remove the shifter indicator lens.
Pull up on the indicator and remove it from the assembly.
Remove the two front rails by unsnapping the front and lifting up, and then back, to remove the rails from the shifter assembly.
Install the new guides. Place the hook end into the assembly and push down. It will snap into place.
Install the new slide indicator. With the transmission in neutral, place the slide over the shifter and into the guides. Move the slide indicator down the guides in the front and rear.
Important: Replace the shifter indicator lens if damage is present due to the slider binding or if it becomes damaged during disassembly.

Install the shift indicator lens.
Install the shift indicator plate.
Install the shifter knob. Refer to Floor Shifter Control Knob Replacement in SI.
Install the upper console trim. Refer to Trim Plate Replacement-Console Front in SI. post back with what you find.

Posted on Jan 20, 2009

  • 62 Answers

SOURCE: Car hesitates/stalls when engine is warm and car starts to move.

Sounds like a bad motor mount, pop the hood and see if the motor shakes or moves rapidly when u put it in gear holding down the brake.

Posted on May 10, 2009

greg_margo
  • 1959 Answers

SOURCE: Cobalt not running at low rpm.......

All are possibilities but EGR valve makes the most sense. It's famous for causing poor idling and/or stalling at low RPMS. Best of luck.
Greg

Posted on Jun 18, 2009

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