Question about Cars & Trucks
a 6ya Mechanic 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 repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
the throttle body is probably gummed up. You need to buy some throttle body intake cleaner and clean the throttle body. After you've cleaned it up, recconnect the battery and it should reprogram the engine's idle and your problem should be solved. It's pretty easy.
Posted on Feb 10, 2009
THis has happened to me in the past. My fix was to clean the throttle body. The problem began after my battery died. The computer was defaulted back to its original settings after replacing the battery. Once I cleaned the throttle body, everything was fine. This happened at about 85,000 miles.
Posted on Mar 13, 2009
, do a simple test on the charging system...check battery voltage. should be 12v or better. start engine & check volts at idle, no accessories on. volts should read 13.5 -14v. Turn on all accessories(including headlamps on high) volts should drop slightly but should not creep down. Definitely not below 12.5. If voltage drops lower than 12.5, the regulator (in the alternator) is not working. either change regulator or change entire alternator. Alternator drive belt should have sufficient tension so that alternator cannot be turned easily by hand. If it can, check belt tensioner.
Posted on Mar 18, 2009
The E-brake light is on because the brake is slightly on, or the fluid is low, or the brakes are failing It sounds like the fluid is getting low from normal brake wear and not a problem. Just get the front brakes cheched and replaced. Don't put any fluid in because the new brake pads which are thicker will take up the space the fluid has dropped and push the fluid back to the correct level
Your engine is shutting down at idle because of a a bad seal on the engine induction system. It is the big duct that connects to the engine air intake. Leave the car running at idle, E-Brake on, and squeeze the big black duct going from the air filter to the engine, Does the car shut off? Next check small little hoses that attache to this big air duct. Try moving them a little to see if the engine runs different.
If these are good then I would shut off engine and remove this duct. A hose clamp holds one end. A slotted srewdriver will work to remove this clamp. The other end, at the Air Filter simply unclamps by hand.
The Throttle Valve is the first thing you see in the engine, it is inside the intake just after the duct you removed between the Air Filter and Intake. Have some one open the Throttle by stepping on the gas pedal and see if it is clean around the edges. If not, use some cleanning alcohol from your medicne cabinet to clean this area. A toothbrush will get into the tight spaces. Wipe clean with paper towel. Autozones sells a special cleaner called Throttle Valve cleaner spray. Use this not Carburator Cleaner.
If it still runs bad a idle the idle valve could be dirty and now you need more tools to remove it and clean too.
Posted on May 27, 2009
SOURCE: 04 silverado P0446 low idle
Sound to me like the computer has gone into "limp" mode, it is working just good enough to make it to a repair center. At this point it needs to go on an analyzer and make the necessary corrections then the computer will have to reset it self. Some analyzers can get rid of the bad code and the computer will come back by it self. But something has gone bad and the computer is compensating for it.
Posted on Feb 11, 2010
Tips for a great answer:
Jun 03, 2017 | Chevrolet Cars & Trucks
Aug 08, 2017 | 2004 Chevrolet Silverado 2500HD
Mar 22, 2013 | 1999 Chevrolet Silverado 1500
Nov 13, 2011 | 2003 Chevrolet Silverado 1500
Jun 25, 2011 | 2003 Chevrolet Silverado 1500
Jan 03, 2011 | Chevrolet Silverado 1500 Cars & Trucks
Dec 13, 2009 | 2000 Chevrolet Silverado
Jul 25, 2009 | Chevrolet Cavalier Cars & Trucks
Jun 14, 2009 | 2004 Chevrolet Silverado 3500
358 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: