Question about 2003 Chevrolet Aveo

1 Answer

I drove a 2003 chevrolet aveo hatchback 1.5L SOCH GM E-Tec II engine AT. My car suddenly lost a lot of power during overtaking another vehicle or climbing hill specially when it's in hot weather although the rpm almost hit the redline. The transmission doesn't shift to a higher gear position even though the engine already give enough power to the transmission, i had to release the throttle so the transmission can shift to a suitable gear position. These problem cause high fuel usage and also unnecessary roaring engine sound but no power. My aveo is a AT transmission so i think it is not a clutch problems. There also no smoke come out for the exhaust when i extremely push the throttle.

Posted by on

  • Aidy Jon Sep 03, 2010

    The "check engine" light off. But i noticed there's something different with the sound of the exhaust system. It was bit rough. When i drove my car in normally( in city area where the roads are flat ) my car can go form idle position to 40mph smoothly (took about 12-15 seconds) and the transmission shifted normally, but the problem occur when i push the engine bit hard for example when i want to climb a hill or overtake another vehicle the engine will roar to the redline and only shifted if i release the throttle a bit. Imagine in 2nd gear position the engine roar to 6000rpm but the car only goes 15-20mph.

  • Aidy Jon Sep 21, 2010

    Thank you for you advise, i have checked my car's exhaust system and as you said there was a blockage in the catalytic converter. After i changed the cat con, my car seem back to the normal performance. thanks.



1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Chevrolet Master
  • 8,522 Answers

If you are saying there is no exhaust coming out the tailpipe, you have a blockage in your exhaust. Either the catalytic converter or the muffler has failed closed. Take the car to a muffler shop to diagnose which part needs to be replaced (they will need to break open the exhaust between these components).

Posted on Sep 03, 2010

  • 1 more comment 
  • Aidy Jon Sep 03, 2010

    I meant there's no black or white smoke coming out the tailpipe, that means my engine's piston ring still in good condition. If there's a blockage in my exhaust system probably my engine will be hard to start or it will hard to get to 5000-6000 rpm. My engine response was good, is like my engine have power but it fail to channel does power to the transmission. I still don't know why my car lost so much power.

  • Jeff Turcotte
    Jeff Turcotte Sep 03, 2010

    OK, the transmission uses engine vacuum to decide when to shift. You should check for vacuum leaks, especially if there are any hoses leading to the transmission. Also check any other hoses that are coming from the top of the engine (intake manifold). Is the "check engine" light on?

  • Jeff Turcotte
    Jeff Turcotte Sep 03, 2010

    OK, in addition to checking for vacuum leaks, also check the transmission fluid level and color.



1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
New users get 2 Free calls (no credit card required) and instant help on almost anything you can think of (from cars to computers, appliances, handyman, and even pets).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

What is the 2007 chevy aveo engine number

PDF]2006 Chevrolet Aveo - GM Heritage Center
2006 Chevrolet Aveo: Refinements Enhance Value and Safety . ..... Engine NumberLocation . ... Manual Transmission Identification Number Plate (Y4M) .

Jan 31, 2016 | Cars & Trucks

1 Answer

What is the torque on a Suzuki forenza 2.0 camshaft caps

2.0 L Family II I4 (petrol)
2.0 L RA 420 I4 (diesel)
there are two 2.oL so>>?>> Ill guess GAS (petrol)
that is a GM engine not Daewoo., thank gosh.

that is a Deawoo suzuki wonder box.
pay 4 bucks and look

there are many engines, used.
6mm? thread? are usually 89 inch/lbs, I said INCH not FOOT.

here is the wiki, squack
The L34 also known as the U20SED is a 2.0 L (1,998 cc (121.9 cu in)) engine that was built until 2009 by Holden in Australia, dubbed D-TEC by GMDAT (the new Daewoo after the buyout from GM) or E-TEC II by Chevrolet (GM). I

with this fact, you can google L34s for help. if a L34.
'all answers USA .

Apr 21, 2015 | Suzuki Forenza Cars & Trucks

1 Answer

05 Suzuki Forenza died as I was driving and won't restart. Any suggestions?

its really a stinking Daewoo. and is listed as one of the worse cars ever made.
1: recalls and huge list of TSBs, read them they are like the worst ever , all vary bad nasty problems.
2: The engine may be GM. my search shows: quote: The US model line features the 2.0 L 4-cylinder E-TEC II made by Holden, developing a maximum power of 126 horsepower at 5600 rpm
This is the 2.0 L (1,998 cc (121.9 cu in)) U20SED engine for the North American market, dubbed D-TEC by GMDAT (the new Daewoo after the buyout from GM) or E-TEC II by Chevrolet (GM). It has an 86.0 mm (3.39 in) bore and stroke. Power is rated at 119 hp (89 kW) in South America and Europe, 126 hp in Canada, and 132 hp in the United States; all are at 5400 rpm and torque is rated at 126 lb·ft (171 N·m).
i has a timing belt, if you dont change it out at 60k the valve hit the pistons and BAM, kiss off a good engine.
so you check spark, and spark is good x4
and you try test fuel(can spray) and it fails.
so you check compression and its horrid.
you bent the valve.
here is a guy that just replaced the belt, and does not want to damage it more so does a leak down test, (smart guy)
here it is
on youtube. see both videos, this is #1

skipping 60k mile tuneups ,this is 100% going to happen.

Nov 02, 2013 | Cars & Trucks

1 Answer

Loss of brake during sudden acceleration.

Click the link below to troubleshoot this problem: ---
Car loses power while acceleration?

Loss of acceleration?

Acceleration lag problem?

How exactly the Vehicles Accelerator Cable works?


How exactly Vehicles Accelerator Pump Diaphragm Works?

accelerator pedal sensor?

stalls and bucks on Acceleration?

Engine accelerates when brake is applied?


This will help.


Feb 14, 2012 | 2003 Mercedes-Benz E-Class

2 Answers

My daughter who is 18 was driving her 2005 car on 295 yesterday doing 50 mph,she went to put on the brake and the car went faster..the car speed up to 75 mph,she was scared to there a recall on...

NEWS: Feds Step Up Probe of Chevy Aveo Stuck Throttle

Ice formation in engine can cause problems -- February 19, 2008 -- Federal safety regulators are stepping up an investigation of the vehicle speed control system in 2004 and 2005 Chevrolet Aveos.

The Office of Defect Investigations (ODI) which is part of the National Highway traffic Safety Administration (NHTSA) has upgraded its evaluation of complaints which began October 19, 2007 about stuck throttles in the Aveo because of "ice formation within the engine air intact tract."

The change, according to ODI, follows a safety recall by General Motors "involving substantially similar vehicles manufactured for sale in Canada."

GM, according to the federal safety group twice revised the Canadian recall "to include more substantial changes to the throttle body, intake manifold, positive crankcase ventilation and engine cooling systems to further reduce air intake tract."

After receiving 28 complaints of a stuck throttle in vehicles in the U.S. along with 46 warranty claims affecting 63 vehicles," investigators suspect the defect occurs in the winter when the temperature is below freezing.

Information provided to ODI by GM does not include events involving stuck throttles during the "most recent winter months" so the investigation will be intensified to "further study the frequency of the alleged defect," according to ODI.

An engineering analysis is often the last step before a NHTSA-mandated recall.

Feb 02, 2011 | 2005 Chevrolet Aveo

1 Answer

I have bought Chevrolet Aveo hatchback 2004 and I have checked the tire pressure it was 26 for front and 20 for rear tires and I noticed it consumed lot of gas, so my concern is the proper tire pressure...

The sticker inside your drivers door frame (or in your owners manual) should give you the proper pressures. Do not use the pressures indicated on the tires. Tires fit many vehicles of differing sizes and weights ( I would say the pressures are low off hand) let me know - curious

Dec 06, 2010 | 2004 Chevrolet Aveo

1 Answer

Where is the blower motor located in the engine of the 07 Chevy Aveo hatchback?

Do you mean the blower motor for the radiator? If so, then it's likely it is an electrically powered motor found on the radiator.

If you mean the blower motor for the climate control or vents inside the car, look under the hood on the firewall or under the dashboard inside the cabin.

Oct 14, 2010 | 2007 Chevrolet Aveo 5 Hatchback

Not finding what you are looking for?
Cars & Trucks Logo

245 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts


Level 3 Expert

76649 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22219 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8518 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides