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2003 Chevy trailblazer, Idle's fine, But loads down when accelarated

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Possible feul filter clogged or could have low feul pressure from the pump should have at least no less than 35lbs of pressure continuous to injectors when accelerating

Posted on Jul 30, 2008


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What could be the problem/fix for 2003 chevy trailblazer which is accelarating on its own?

What OBD Codes do you have?

What does the data look like, on a road
test when that happens?

Aug 18, 2014 | 2003 Chevrolet TrailBlazer

1 Answer

Can anybody tell me what can cause my 04 Chevy Trailblazer to idle down and act like it be about to shut off when I turn my a/c on.

The problem may be the a/c compressor putting to much of a load on the engine.Check to see if the pulley appears to turn easily when a/c is engaged .You will need another person to turn a/c on and off.You didn't say,but does the a/c put out cool air? If not, the a/c is the problem.

Apr 06, 2012 | 2003 Chevrolet Trailblazer Ext

1 Answer

I have a 2003 chevy trailblazer, and when i turn on the ac it works fine as im driving, but when i stop the air turns hot and the car trembles and sometimes dies.

The first thing you need to do is clean the throttle body. This area of the air intake gets dirty and gummed up and prevents proper air passage. While the cleaning is taking place, make sure the battery is disconnected so that the computer will be reset and be able to relearn with a clean air intake.
Next, you need to have the AC refrigerant checked, it may low. OR, the low idle speed because of dirty throttle body just does not allow the compressor to produce enough pressure.

Jul 08, 2011 | 2003 Chevrolet TrailBlazer

1 Answer

When i turn on my a/c my 2003 chevy trail blazer wants to stall why?

the idle speed is not adjusting for the extra load of the ac compressor, a scan will tell you if its the iac or tps,

May 07, 2011 | 2003 Chevrolet Trailblazer Ext

1 Answer

I have a 2003 Chevy trailblazer,when I accelarate my service engine soon light came then the reduce engine light comes on; suddenly my truck slows down. Shut the engine down, start it back, the lights go...

Get the engine codes pulled. Once you have them it will help track down the issue. Not really much you can do otherwise unless you want to throw money at it.

Jan 17, 2011 | Chevrolet TrailBlazer EXT Cars & Trucks

1 Answer

2003 chevy trailblazer....idlind at 600-750 rpms, when i engage the a/c it drops to 500rpms then stalls. also have two codes, p1481 and p1482. whats wrong?

The coolant fan clutch or the electric connections to the fan clutch is code1482.

Code 1481 is associated with the coolant fan problem but concerns the PCM having an error.

This error is why your car is stalling. The fan clutch is variable. When it is fully engaged the fan has more resistance and pulls down the rpm. The PCM is suppose to respond to this and raise the rpm for a steady idle. It is not doing it and needs a software upgrade.

The Chevy dealer may have a service note on this problem. The upgrade may be free.

Aug 24, 2009 | 2003 Chevrolet TrailBlazer

1 Answer

Chevy Trailblazer 2003 ran the battery down now wont idle

try changing the air filter ,i had a problem ,at ilde in drive my trailblazer would stall, changed the air filter now it's not stalling and got my power back ,there is a secondary air pump that i have to change ,
not sure were it is ? still not running perfect but it's running better .and my service light is on too.
i got it put on scope ,it's the pump .
not sure if this helps ,but i'm start to run in to problems too,i have a 2004 trailblazer.
i like to do fix things myself ,i hope i's the cost if you know what i mean.

Dec 17, 2008 | 2004 Chevrolet TrailBlazer

2 Answers

A/C problem w/ 2003 Chevy Trailblazer

it has to relearn the idle should do this pretty quick. might also need to clean your throttle body if it doesnt straighten out

Oct 01, 2008 | 2002 Chevrolet TrailBlazer

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