Tag Archives: Chevy Cobalt

How To Race A Chevy Cobalt 2.2 Automatic

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You have a Chevy Cobalt LT 2.2 Coupe Automatic and want to know how to race it using your transmission selector. First you need to know what D, I, L, all mean. Also how these shifter selections should be used. Especially if you like to drag race your Cobalt. Our cobalt test car is a 2006 Chevy Cobalt Coupe LT 2.2 Ecotec 4-speed automatic.  

On the shifter selector “L” is for off-the-line performance. When in L (low) or 1st, it turns off the Traction Control (TC). It engages the low/reverse band to assist the one-way roller assembly through the first gear. And it holds the transmission in 1st gear until redline. Then it will shift into 2nd gear. Once in 2nd gear you should shift up to “I” before hitting redline.

Now “I” is for spirited type driving. It is full automatic but doesn’t allow the tranny to shift into over drive. The tranny will upshift at higher engine RPMs and will also downshift on its’ own as you decelerate. But TC does not get turned off — if you get wheel spin and TC engages you will lose power for a few seconds. If no wheel spin no loss of power will occur. You can drive in “I” but you lose MPG because the tranny won’t go into OD and will shift at higher RPMs than being in D (drive).

So let’s get to “D” (drive) It is for regular driving. Just forget about it and just drive. Best for MPG as the tranny will upshift to a higher gear quicker and go into OD for the best MPG.

If Drag Racing Chevy Cobalt Automatic, Start Off in Low

So if you are going to race another vehicle off the line. It would be best to put your trans in “L” just remember when in “L” it only goes 1st and 2nd, then if you want to go into third, put your trans into “I” before you redline in 2nd.

Generally your 2.2 Chevy Cobalt will be it’s fastest when in “L”. Then second fastest when in “I”. Then third fastest when in “D”.  Most vehicles when in L or low gear, will not shift up to second on it’s own. It will hold low gear and not shift. Chevy Cobalt automatics are a little different, even I was surprised to find this out. You floor it while in L and it will shift into second at very high rpm, but will not shift into 3rd by it’s self.

Hope you now have a little better understanding on how your automatic trans works. Mainly for racing your Chevy Cobalt automatic, so that you can use it to your full advantage.

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Chevy Cobalt Drivers Door Rubbing Fender Fix

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With the Chevy Cobalt 2005 – 2010 one common issue many of these cars have is the driver’s door mid to bottom area rubbing the front fender. This door to fender rubbing issue has happen to our 2006 Cobalt. As well as many other Cobalt owners cars as it is a common issue. The general fix seems to be just take it to a body shop to adjust. Or take it back to the dealer to fix it. These places are totally fine to fix the issue. But will cost in my case $200 for something that can be very easily adjusted in your own drive way. This fix taking about one hour of your time to do.

Tools That Will Be Needed:

10mm socket and or wrench

Floor jack

Small piece of wood or thick rag to put between floor jack and bottom of door

2 washers

Larger flat head screw driver

Torx socket bit

The Cobalt Door Hinge Bolts Are Easy To Access

Now open your passenger or driver’s door (whichever door has the issue). See the hinge bolts that connect the door hinge to the door (the easy bolts to access). Now put a floor jack under the door just snug so door stays in place. Then loosen the two top bolts a few turns. Then loosen and remove the two bottom door to hinge bolts, (only removing one bolt at a time). Now put a washer in behind the hinge where it meets the door. Then put the bolt back in, do not tighten. You do this for each door hinge lower bolts.

By adding the washer behind the door hinge. Tt pushes the door slightly away from the fender at the bottom to middle area, creating more gap/space between the door and fender. So no rubbing will occur anymore. When both bolts have been done, tighten them to spec or just nice and snug.

The door now should not rub on fender when opening/closing. But will now not close perfect, it will slightly hit bottom of door latch. So must now using the torx bit. Loosen the two large torx bolts located on the car body of inner door area. You will need to use a large screw driver and lift up on an angle to adjust the door striker plate a little higher. This is done so door lines up properly when closed.

This may take a few tries to get it right. When the door closes with no resistance/rubbing and opens normally. You have it adjusted properly. Now just give the door latch a nice lube and your Chevy Cobalt is fixed and good to go.

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Chevy Cobalt 2.2 K&N Air Filter Review

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Does replacing your stock air cleaner in a Chevy Cobalt 2.2 LT with a K&N re-usable air filter really improve horsepower or not? We tested out a K&N air filter to see if would give our 2006 Chevy Cobalt a horsepower increase. We have seen other reviews stating the horsepower increases, but really need to see for ourselves if actually does or does not increase the Cobalt 2.2 horsepower. The one point we do like about the K&N air filter is it is reusable and will last many thousands of miles/km.

Changing over to the K&N air filter is not hard to do, you just remove the top of your stock cold air assembly, remove stock air cleaner, and replace it with the K&N air cleaner. The K&N is already pre-oiled, you just drop it right in and your done. We were told that it would take the Cobalt’s computer a short time to adjust to the K&N filter increased air flow, about a few hours of driving time. After the install our Cobalt 2.2 started right up and we noticed a change in the sound of the 2.2 motor, sounded a little heavier than stock.

The Stock Air Filter Gave More Low End Power

We drove around for a few hours to let all adjust. We noticed the power of the car changed from having more power at lower rpms with stock air filter, to now having more power at higher rpms only, but less at the lower rpms. We also took note that our gas mileage was a little better than before. We took note of our 0-60 times when stock air cleaner was in the car. The 0-60 time with the K&N air filter was much slower, actually the whole car felt much slower than stock.

We left the K&N filter in for the winter, as the tires would not spin as easy as car had less torque down low than with stock filter installed. For winter driving this worked well, gave better gas mileage and less power, which made winter driving better. However when spring arrived we put the stock air filter back in and after a few hours of driving, our Chevy Cobalt once again had more horsepower, it had returned back to stock horsepower levels.

Our conclusion is the K&N air filter made our 2006 Chevy Cobalt 2.2 slower than stock, yet sounded heavier than stock. The K&N gave the car better gas mileage than the stock filter, so if gas mileage is your concern, the K&N is good, but if more torque/horsepower is your concern, the K&N actually makes the car slower. We think a aftermarket K&N cold air system, not just the filter, may improve horsepower, but that is a test for another time.

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2006 Chevy Cobalt Throttle Body Cleaning

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If your 2006 Chevy Cobalt has over 30,000 km or 15,000 miles the throttle body will need some cleaning. When cleaning your 2006 up Chevy Cobalt you must do it correctly or you could do some harm to the throttle body or the settings. The actual cleaning part is easy to do, you just need to know how to do it. To clean your throttle body ONLY use throttle body cleaner, not carburetor cleaner. I recommend CRC Throttle Body Cleaner as it will not remove the stock throttle body protective coating, which helps to reduce the black gunk build up you usually see when looking into your throttle body.

There are two ways you can clean the throttle body. The first way is to actually remove the throttle body and then clean it, or the second way, which is to leave it on the car and clean it. If you have never cleaned your 2006 Chevy Cobalt throttle body and it now has over 100,000 km or 60,000 miles, it might be best to remove it and thoroughly clean it. Our 2006 Chevy Cobalt has just over 38,000 km, so we are going to leave it on the motor to clean it.

Some tools and supplies you will need are:

Flat Head Screwdriver

Soft bristle toothbrush

CRC Throttle Body Cleaner

Pliers

Rags

You start your 2006 Chevy Cobalt throttle body clean by removing the oil fill cap and the plastic engine cover (put fill cap back in place) Then you remove the plastic piece that attaches to the throttle body by removing a plastic clip on drivers side, then loosening the clamp that attaches to the throttle body again on drivers side, then loosening the clamp to the air cleaner assembly, then using your pliers remove the rubber hose clamp that attaches to the motor (clamp closest to the motor) on the passenger side. Now you can just lift off the plastic air intake piece from the throttle body.

Before you begin cleaning your Cobalt throttle body make sure the vehicle has no key in the ignition. Now take your toothbrush soak it in throttle body cleaner and lightly scrub away the black gunk inside the throttle body. To get between the throttle body and the throttle body butterfly valve, you just push the valve open with your finger, but only just a crack, just enough so the toothbrush bristles can get between and clean no more as may change throttle body settings. Now just wipe all clean carefully with a clean rag. You may have to spray some throttle body cleaner onto your rag and wipe all a few times. Do not spray the throttle body cleaner directly into the Cobalt throttle body.

After all is clean you can re-assemble what you removed. You should clean everything inside and out as you put it all back in place. This would also be a good time to check your air filter and replace if necessary. It would also be a good time to remove your mass air flow sensor from the air filter assembly and clean it with mass air flow sensor cleaner (spray inside it to clean the wires), Do Not clean it with carburetor cleaner or throttle body cleaner it could harm it, use only mass air flow sensor cleaner.

After all is clean and back in place, start your 2006 Chevy Cobalt and let it warm up and idle for about 15 min and you are done.

 

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