Question about Cars & Trucks

Open Question

2004 Trailblazer - Loss of Power

My Trailblazer is experiencing a loss of power. It seems like it is starving for gas. It will restart with no problem. When it is cold it will run fine for about five minutes and then the problem recurs. I have replaced the gas filter, but the problem persists. Any suggestions? Thanks. JDM

Posted by on

  • ray M
    ray M Feb 17, 2012

    Are you getting a check engine light?

  • John McLeod Feb 28, 2012

    Turned out that the problem was the catalytic converter. Thanks to all for your suggestions.



6 Suggested Answers

  • 2 Answers

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

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this 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.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

  • 1224 Answers


number of things
1 fuel injectors
2 worn throttle body
3 inside gas tank sending unit filter needs replaced
4 a/c compressor failing
5 replace air filter
6 depending on mileage of vehicle worn cam, bearings oil rings
7 oil and water mixing together (oil will look like chocolate milk on dipstick if this happens
8 not enough air from the electric fan in front of vehicle (hook constant power and a switch with power key off)
9 wrong fuel type (maybe you car requires premium)
10 alternator wareing out and makeing a slow drop in power
11 binding brakes or emergency brake line binding
12 worn sparks plugs wires and electrical unit that houses this
13 worn capacitor looks like a little tear can with power points on it

this is just basic diagnosing without being there to see the vehicle in person these are the things right off the top of my head that i can help diagnose right now
some of these things wont show on a diagnostic cause there more mechanical and sensors wear with mechanical
hope this helped you in your quest

Posted on May 21, 2008

  • 12 Answers

SOURCE: Sudden power loss

did u check the catalyst is it loose inside..see how much back pressure from the exhaust u r getting

Posted on Nov 05, 2008

  • 1 Answer

SOURCE: loss of power

ignition coil/switch

Posted on Jan 23, 2009

  • 26 Answers

SOURCE: Loss of power

Also check your vacuum lines and hoses, I cannot stress this enough.

Posted on Mar 04, 2009

  • 14 Answers

SOURCE: Loss of power on acceleration with my 2004 trailblazer


I had a similar problem. It was my waterpump. I got lucky and was close to dealersip, so no major damage. Before it failed (about three months before) I noticed the decline in acceleration, dealership missed diagnosing the problem twice. They finally figured it out, when it failed and started clunking in the truck. Was an expensive fix but not as bad as destroying the motor.

Get the water pump checked asap. they changed an air line valve connector thing first which did not fix the problem.

Also, I had a fan belt changed just before the water pump failed. The new fan belt put too much pressure on the failing water pump, causing it to crash and burn about one week after the belt change.

Hope this helps you.

Posted on Jul 10, 2009

Add Your Answer

Uploading: 0%


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



Related Questions:

2 Answers

What dose the coad CO292 mean on my 2004 gmc envoy

loss of communication with engine control system

Aug 26, 2014 | 2004 Chevrolet TrailBlazer

1 Answer

2004 chevy trailblazer power loss, high rpms, low ppms

Check the timing chain. Some times the chain will shift with worn teeth and get out of synch. This will cause the engine to lose power and back fire. Sometimes with a flame through the carb. I did that one once. Easy fix if it is the problem.

Oct 28, 2013 | 2004 Chevrolet TrailBlazer

1 Answer

I have a 2004 duramax, when i get on it to pass it will only get to 65mph and then loss of power and pedal goes to floor.

This is usually caused by your fuel filter plugging. I had the same thing happen. If I recall right It's called "limp mode" when the engine is starving for fuel, so it won't go over 65mph. If you stop and shut the vehicle off it usually resets when you restart it. I changed my fuel filter and it worked fine. Hope that helps.

Mar 17, 2011 | 2004 Chevrolet Silverado

1 Answer

02 Trailblazer Loss of power - replaced fuel filter, - rpm's rise but no accelleration -engine cold or hot does not matter- I hope that it is not the transmission - I read where a bad fan clutch can...

If the fan clutch is bad, your engine would sound like a big rig or an airplane and get louder as you press on the gas more. Do you have a check engine light on?

Feb 23, 2011 | 2004 Chevrolet TrailBlazer

1 Answer

I am experiencing power loss from my 2.0tdi 140 A4. seems like massive turbo lag. Started with juddering at low revs in 1st & 2nd gear, then complete loss of power. Starts ok & idles but no pulling...

these vehicles are known for ignition coil failure. typical symptoms include: Misfire, power loss, vibrating engine, poor fuel consumption. If the vehicle's engine vibrates, it be misfiring. Is your chk engine light on???

Sep 29, 2010 | 2006 Audi A4

1 Answer

Loss of power 2.4 dohc

FIRST THING IS TO CHANGE FUEL FILTER! Also have fuel pump checked and have a compression test done.

Apr 24, 2009 | 1997 Oldsmobile Achieva

1 Answer

Loss of power

ignition coil/switch

Jan 21, 2009 | 2004 Chevrolet TrailBlazer

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

Related Topics:

187 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cars & Trucks Experts


Level 3 Expert

80637 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

john h

Level 3 Expert

15427 Answers

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

Answer questions

Manuals & User Guides