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post #1 of 14 (permalink) Old 05-20-2014, 09:36 PM Thread Starter
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Sluggish throttle response

Driving today I noticed I couldn't really get on it. Pedal to the floor and the car was sluggish. I tried driving the car in low gear 1 and 2 (automatic) and the same result it was sluggish. My throttle body has recently been cleaned within the last two weeks. Every now and then the car does thud when I shift into gears. Any idea what my issue may be?




UPDATE
It feels like I'm driving with 87 octane vs my normal 93 octane I get for my Trifecta tune.


05 Chevy cobalt 2.2L base automatic

2005 Chevrolet Cobalt 2.2L Base Coupe Automatic

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post #2 of 14 (permalink) Old 05-21-2014, 08:54 AM Thread Starter
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Bump


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2005 Chevrolet Cobalt 2.2L Base Coupe Automatic
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post #3 of 14 (permalink) Old 05-21-2014, 04:05 PM Thread Starter
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Car also barely inches forward when releasing the brake pedal


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---------- Post added at 06:05 PM ---------- Previous post was at 05:26 PM ----------

Anyone? Please help.


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post #4 of 14 (permalink) Old 05-22-2014, 11:24 AM
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Try Sea-foaming it first. How old is the fuel filter? You may also have a clogged injector or two.
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post #5 of 14 (permalink) Old 05-22-2014, 01:06 PM Thread Starter
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The fuel filter probably is a year old so maybe 15-20k miles on it.


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---------- Post added at 03:06 PM ---------- Previous post was at 01:53 PM ----------

Just seafoamed it. Feels no different.


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post #6 of 14 (permalink) Old 05-26-2014, 12:42 PM
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Depending on ur DIY comfort pull the fuel rail n look at fuel injectors. at 28,000 miles mine were visibly dirty. Then try some fuel system cleaneer like Berrymans. takes less than 1 hour n Berrymans is $5 at pep boys. or if u got a lot of money spend $200 n replace all 4 injectors n O-Rings. Also when have u changed the tranny fluid last?

2005 COBALT BASE 2.2 AUTO ARRIVAL BLUE:SOLD
2008 PONTIAC G5 2.2 AUTO SLATE METALLIC:SOLD
1999 CHEVY CAMARO 3800 AUTO HUGGER ORANGE
2009 COBALT LS XFE 5SPD VICTORY RED
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post #7 of 14 (permalink) Old 05-26-2014, 01:57 PM Thread Starter
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Never changed the tranny fluid. It's at 91,000 mi and bought the car with 62,000 two years ago. I use fuel system cleaner pretty often every 10 tanks or so


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post #8 of 14 (permalink) Old 05-27-2014, 04:42 AM
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I would try changing tranny fluid. Haynes manual recomends every2 yrs or 24,000 miles. Based off the car not moving forwards when releasing brake pedal n in gear. I changed the tranny fluid in my 99 camaro at 63,000 n the amount of crap in the pan was terrible! Ur cobalt is similar just smaller pan. costs $50 at most for fluid,gasket,filter n rtv. just have an accurate tourque wrench for re install. if bolts r too tight it leaks or too loose. Just get a jack,jack stands, n set aside a few hours.

2005 COBALT BASE 2.2 AUTO ARRIVAL BLUE:SOLD
2008 PONTIAC G5 2.2 AUTO SLATE METALLIC:SOLD
1999 CHEVY CAMARO 3800 AUTO HUGGER ORANGE
2009 COBALT LS XFE 5SPD VICTORY RED
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post #9 of 14 (permalink) Old 05-27-2014, 09:21 AM Thread Starter
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It's at the shop now diagnosing the problem


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---------- Post added at 11:21 AM ---------- Previous post was at 09:24 AM ----------

Fluid level is fine. Mechanic referred me to go to a tranny shop around the corner Sigh


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post #10 of 14 (permalink) Old 05-27-2014, 10:12 AM
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That sucks. I personally would rather slam my dick in the door than go to the shop. let alone 2! Good luck gettn ur balt back to normal.

2005 COBALT BASE 2.2 AUTO ARRIVAL BLUE:SOLD
2008 PONTIAC G5 2.2 AUTO SLATE METALLIC:SOLD
1999 CHEVY CAMARO 3800 AUTO HUGGER ORANGE
2009 COBALT LS XFE 5SPD VICTORY RED
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