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post #1 of 8 (permalink) Old 05-01-2014, 05:11 PM Thread Starter
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Question Im Not Sure

i am having a very strange issue when my engine is cold i back out of my drive way and take off it accelerates fine til i stop at the stop sign when taking off from stop sign the car starts to move but wont go any faster regardless of how hard im pushing the throttle but then will suddenly take off once the car warms up its fine ive been to the dealership the throttle body was replaced all 4 plugs and 2 ignition coils replaced but still does the same thing they say they cant replicate the issue no cel any ideas
2007 chevy cobalt LS 2.4 automatic trans thanks in advance

Last edited by beginner77; 05-01-2014 at 06:23 PM.
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post #2 of 8 (permalink) Old 05-02-2014, 12:39 AM
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Quote:
Originally Posted by beginner77 View Post
i am having a very strange issue when my engine is cold i back out of my drive way and take off it accelerates fine til i stop at the stop sign when taking off from stop sign the car starts to move but wont go any faster regardless of how hard im pushing the throttle but then will suddenly take off once the car warms up its fine ive been to the dealership the throttle body was replaced all 4 plugs and 2 ignition coils replaced but still does the same thing they say they cant replicate the issue no cel any ideas
2007 chevy cobalt LS 2.4 automatic trans thanks in advance

Before I read the part about the new throttle body I was thinking maybe a dirty throttle body plate but never mind that idea. It could possibly be a fuel system problem but I'm not too familiar with those and why performance would improve as the vehicle is warmer. Something like this might require Coby's expertise
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post #3 of 8 (permalink) Old 05-02-2014, 06:55 AM
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Any check engine lights?

'09 SS/TC - Stolen
Mods - Injen CAI, CIA MAF Relocate CP's, Dejon FMIC,
Custom 3" DP, 3" Exhaust, GT3076R, Pioneer AVH-4100DVD, Hurst STS, ZZP triple pod, Autometer Cobalt boost/DPIC/WB gauges, Nitto NT05 245/40/18's, H&R Springs, 80:20 Meth Spray
Future - KSport Kontrol Pro Coilovers, 10% Tint, FMIC spray
538whp/501wtq @38 psi on meth and 93 oct on stock ish motor


06 EVO IX MR/SE - Sold
Mods - *Updated 10/6/13* AEM TRUboost EBC, 4in custom TBE, SD dual 93/e85 tune, ETS 4in Race Core FMIC, Dual Aeromotive 400lph Fuel Pumps, T4 Tubular Manifold w/ dual WG's, FP Super99HTZ DBB Turbo, GSC 274 mivec cams, ARP headstuds/rod studs, FIC 2150cc Injectors, Aeromotive FPR, Aeromotive Fuel Rail, catch can, Mini Battery Kit, Slim Coolant Fan, Kiggly Racing high pressure valve Springs/Titanium Retainers, Supertech Stainless Steel Valves, Dual VTA Tial 44mm WG's, 4g64 Stroker Manley Pistons, 155mm 2.4 LR Manley Turbo Plus I Beam Rods with ARP 625 Studs, 100mm forged non-billet Manley Crankshaft, Full H/E PNP with Port Matching, Kiggly Racing Girdle, Dual Tial 50mm BOV's, Excedy Triple Disc Carbon HD Clutch, AEM EMS

'95 Ram 2500 Diesel
Mods - 5in TBE, Boost Elbow set to 28psi, Adjusted fuel pump, Open Turbo.

Future Mods- Super Street Clutch (rated @1400ftlbs tq), 67mm turbo, 160lb valve springs, added timing, tubular exhaust manifold, larger injectors, possible 6 spd swap.


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post #4 of 8 (permalink) Old 05-02-2014, 06:58 AM
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Does the engine throttle up and your not moving, or the engine is just hesitant?

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post #5 of 8 (permalink) Old 05-02-2014, 04:01 PM Thread Starter
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the engine will throttle up and the car will move slowly then like catch up and take off allmost like thers a delay
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post #6 of 8 (permalink) Old 05-02-2014, 04:46 PM
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Check transmission fluid levels, I think that's one of the symptoms of low fluid.

Every minute spent angry is a happy minute lost for ever and ever!!!
Drives 2016 Cocoa Buick Encore 1.4L Turbo auto KL4CJDSB2GB652675
Drives 2016 Sunset Orange Trax LT1 1.4L Turbo auto 3GNCJPSB8GL142716

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post #7 of 8 (permalink) Old 05-02-2014, 05:43 PM
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^^ this too!

'09 SS/TC - Stolen
Mods - Injen CAI, CIA MAF Relocate CP's, Dejon FMIC,
Custom 3" DP, 3" Exhaust, GT3076R, Pioneer AVH-4100DVD, Hurst STS, ZZP triple pod, Autometer Cobalt boost/DPIC/WB gauges, Nitto NT05 245/40/18's, H&R Springs, 80:20 Meth Spray
Future - KSport Kontrol Pro Coilovers, 10% Tint, FMIC spray
538whp/501wtq @38 psi on meth and 93 oct on stock ish motor


06 EVO IX MR/SE - Sold
Mods - *Updated 10/6/13* AEM TRUboost EBC, 4in custom TBE, SD dual 93/e85 tune, ETS 4in Race Core FMIC, Dual Aeromotive 400lph Fuel Pumps, T4 Tubular Manifold w/ dual WG's, FP Super99HTZ DBB Turbo, GSC 274 mivec cams, ARP headstuds/rod studs, FIC 2150cc Injectors, Aeromotive FPR, Aeromotive Fuel Rail, catch can, Mini Battery Kit, Slim Coolant Fan, Kiggly Racing high pressure valve Springs/Titanium Retainers, Supertech Stainless Steel Valves, Dual VTA Tial 44mm WG's, 4g64 Stroker Manley Pistons, 155mm 2.4 LR Manley Turbo Plus I Beam Rods with ARP 625 Studs, 100mm forged non-billet Manley Crankshaft, Full H/E PNP with Port Matching, Kiggly Racing Girdle, Dual Tial 50mm BOV's, Excedy Triple Disc Carbon HD Clutch, AEM EMS

'95 Ram 2500 Diesel
Mods - 5in TBE, Boost Elbow set to 28psi, Adjusted fuel pump, Open Turbo.

Future Mods- Super Street Clutch (rated @1400ftlbs tq), 67mm turbo, 160lb valve springs, added timing, tubular exhaust manifold, larger injectors, possible 6 spd swap.


Master ASE Certified Gasoline/Diesel Technician since 2004

Speed Junkies Social Group

Yourcobalt Official Facebook Page!

Syndicate of Tuners Official Page! Up and going again as of 1/11/13

Click here to PM me if you have questions or issues!
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post #8 of 8 (permalink) Old 05-02-2014, 08:28 PM
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You have to jack up all four tires off the ground safely and find the two bolts on the transmission. Take the top one out to see if any fluid comes out.


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2005 Chevrolet Cobalt 2.2L Base Coupe Automatic
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