What should the idle speed be on a Silverado?

When I have my AC on, which is all summer here in Phoenix, it works great when the idle is just above 500 RPM, but if it dips below 500 the AC turns to warm air (not good for the attitude when in the summer heat of Phoenix).

What should I do if my engine idles at 500 rpm?

Put in some better fuel (Shell or Mobil premium) and just DRIVE it. Very little extra cost to you and it cleans as you drive. Your truck will thank you! Generally speaking these injected computer controlled engines have pretty low ldle speeds.

What does it mean when your idle speed changes?

When idle speed changes significantly or stalling on throttle release occurs, a problem is indicated. Most often an input sensor has failed or the throttle body has a problem. On later model vehicles, a check engine light may accompany the issue. When a vehicle begins to idle rough or stall, the idle system requires service.

How does electronic fuel injection affect idle speed?

When engines had carburetors, they always provided a means of adjusting the idle speed. A simple turn of a screw corrected the problem if the engine’s idle speed was too slow or too fast. With electronic Fuel injection they eliminate the manual adjustment and the computer makes all corrections to the engine’s idle speed.

What happens to a diesel engine when it idles?

3. Idling harms your engine. Does idling hurt a diesel engine? Yes. When a diesel engine idles, it does more damage to the engine than normal operation. Operating a diesel engine at a low speed will cause two times the wear on the internal components compared to operating at normal load. This will raise maintenance costs and shorten engine life.

Why does a cold engine have a higher idle speed?

A cold engine runs with less efficiency and the PCM also commands a higher idle speed. This helps to circulate engine oil and prevents stalling while the engine warms. The fuel injectors may also add additional fuel to help the cold engine run better, much as a choke does on older engines.

Why is my Silverado 5.3L V8 intermittent?

One other intermittent problem I’ve had since the day the fuel pump went out is it acts the fuel pump is loosing it’s prime, meaning when I go to start the engine I have to spin it over for a few seconds before it will fire up and even then it will sputter a bit and catch up.

Where is the IAC valve on a Silverado?

Also take a look at your IAC (Idle Air Control) valve, usually located on the side of the throttlebody. They are very easy to change out and tend to go bad. I had a similiar problem and replaced and cleaned may things, still had issue and got truck tuned with a slightly higher idle, as soon as I did it was golden.

Is there an increase in rpm on a Silverado?

I have sprayed carb cleaner all around the intake, throttle body and vacuum lines while it’s idling rough and did not get an increase in rpm.

Why does my Chevy 6.0 stall out at low idle?

A poor idle sometimes happens after working under the hood as guys have a tendency to lean on the air intake piping pushing it down slightly. Which causes air to leak in around the clamps.

What’s the average idle speed of a Silverado?

In the last month, noticed that idle is lower than normal. In Park or Drive when stopped at a light, the idle gets pretty rough and stays around 300-400 or say and often stalls when turning a corner as well. Always have the A/c on as I’m in Florida. At speeds of 15 MPH up to highway speeds, all is good.

Is there an idle air control on a Silverado?

Your truck doesn’t have an Idle Air Control since it has an electronically controlled, drive-by-wire throttle. One can get MAF cleaner at the auto parts store. Spray the tiny filament wires inside the MAF with the cleaner.

A poor idle sometimes happens after working under the hood as guys have a tendency to lean on the air intake piping pushing it down slightly. Which causes air to leak in around the clamps.

When did the Chevy 6.0L Vortec 6000 come out?

The 6.0L Vortec “6000” engine was introduced in 1999 and remained in production until 2019 when it was replaced by the 6.2L Vortec. The Chevy 6.0 is a small-block V8 engine that produces 300hp-345hp and 360tq-380tq, depending on the engine version. The 6.0 engine had nine variations over its 20 year life span.

What causes a Chevy 6.0 Vortec engine to leak?

They are subject to extremely high heat temperatures which can cause gaskets and bolts to warp and go bad, creating an exhaust leak. On the Chevy 6.0 vortec engine, the exhaust leak is most commonly caused by the exhaust manifold bolts completely breaking off. When the bolts break off, air gaps will open up causing exhaust gasses to escape.

Why is my Vortec 6000 engine not working?

When water enters the sensor it corrodes the wires and causes the whole sensor to fail. Rough idling, poor driveability, performance, acceleration, etc. The 6.0 engines have variable valve timing, which means the computer electronically adjusts timing when it believes it is off.

How can I increase idle speed in a Chrysler?

If the resistance is outside that range, the idle control motor needs to be replaced. Use a bidirectional scan tool to increase idle speed in a Chrysler. Connect a bidirectional scan tool to the same OBD port you would plug a code scanner into. Use the command in the scan tool to increase the engine’s idle.

What does it mean when your engine idle does not increase?

Use the command in the scan tool to increase the engine’s idle. If the engine idle does not increase, it means there is an issue at the idle control motor of its circuit preventing the signal from changing the idle. You can purchase a bidirectional scan tool at your local auto parts store.

How can I tell if my idle control valve is working?

To check if an idle control valve is working properly, start by turning on your engine and letting it run for a minute or 2. Then, when it’s at an idling speed, take note of the RPMs in your car. Next, turn the engine off and disconnect the idle control motor under your hood.

Why is my Chevy Silverado running rough at idle?

Really, your Silverado will be running rougher at any RPM, but a misfire will be most pronounced at idle. Spark Plug Wires – While not every model and engine combination of vehicles today comes with spark plug wires (a lot are now coil on plug), if your Silverado happens to have them, they can go bad and cause a rough idle.

What happens when you idle the air control valve?

Normally, if you just start your car, the idle air control valve will cause the engine rpms to increase and slowly decrease. That would be a sign that your IAC is working.

What kind of car is a 2003 Chevy Silverado?

Usage Type: This vehicle was used by an individual. Clean Title: No title issues reported. Description: Used 2003 Chevrolet Silverado 1500 SS with AWD/4WD, Audio and cruise controls on steering wheel, 6000lb Towing Capacity, Heated seats, Auto Climate Control. Great Deal! Accident History: This vehicle has 0 reported accidents.

When does an idle air control valve malfunction?

As soon as you start your car, the idle air control valve will immediately malfunction. If you happen to be away from home and this happens, the stalling will happen every couple of minutes in the beginning. You should be able to make it to the nearest mechanic in time before the engine stalls completely.

What does it mean when idle control does not increase?

If the engine idle does not increase, it means there is an issue at the idle control motor of its circuit preventing the signal from changing the idle. You can purchase a bidirectional scan tool at your local auto parts store. Make sure the wiring harness is firmly connected to the idle control motor before conducting this test.

When to know if your Silverado has a leak?

If your fuel trims are all over the place showing lean, it is a good indication you have a leak. Take some carb cleaner and spray down the intake past the MAF while the motor is running and see if there is a change in idle. If there is a noticeable change, good possibility you have a leak.

What kind of engine does a 2003 Silverado have?

3. Anyone have a Real Picture of a 2003 silverado 5.3l engine bay they can make markings on to show where to disconnect or drill hole or do something to Properly inject seafoam without me causing any damage….

What’s the idle rate on a Chevy Silverado?

From buying research to owner support, join 1.5 MILLION GM Truck Enthusiasts every month who use GM-Trucks.com as a daily part of their ownership experience. In the last month, noticed that idle is lower than normal.

How to reset the idle speed in a GM TBI?

Unplug the IAC valve located on the passenger side, rear of the throttle body. Start the engine. Insert a T-30 size Torx driver into the Idle adjustment screw that is located behind the plug removed earlier. Turn the screw to adjust the idle speed to 650 RPM +/- 50 RPM.

What to do after Idle Relearn on Chevy?

Blue Streak Electronics recommends to warm the engine after the idle relearn procedure, without use of the air conditioner. After the engine is warm, switch the air conditioning on and off, and then put the transmission into the “drive” position. These actions complete the full idle relearn procedure.