Why does my Chevy Silverado idle at 500 rpm?

Reasoning is emissions related and the truck will automatically run it (choak it) @ ~1K +/- cold until enough heat has been generated then drop it down. But as wisely suggested above, good fuel additives can be really helpful. I’ll add chevron’s techron to the list.

Why is my 5.3 L missing and rough idle intermittently?

5.3 L Missing and Rough Idle Intermittently I have changed Spark Plugs,Wires ,Coil Packs, and removed Fuel Injectors and soaked overnight. Engine code is a P0304. Misfire Cylinder #4. Most of the time around town is alright. When i put it on highway, it will surge like its cutting off and then pick right back up and be fine. Fuel Presure is 55 psi.

What’s the idle speed of a Chevy truck?

Thanks. Last edited by EKinMN on Nov 11 2011, 2:54am, edited 1 time in total. Most trucks start up at about 1000 RPM, and then drop down when it warms up. Although mine is a lot different than yours, I can tell you it will idle down to about 500 RPM when warm.

What causes a Chevy Silverado to run rough?

If an oxygen sensor goes bad, it can make your Silverado run too lean (or rich). A super lean running engine will often idle rough. Fuel Injectors. The fuel injection systems job is to atomize the fuel into fine mist.

What should the RPM be on a Chevy Silverado?

Farside, we have the same trucks (roughly). At cold start, mine jumps to 1400-1500. It quickly drops down to 1,000. After it warms up, it is consistent at 500-600. So I think yours is pretty normal. If it is sluggish, I agree with using a Top Tier fuel, and a can of Sea Foam or Amsoil Performance Plus in the next tank.

What should the idle RPM be while idling?

You can get a cheap gauge at an auto part place that will quickly tell you if you are in spec. Idle air control..it should idle at 1000 rpm’s when the engine rpm’s jump up and down,suspect the iac. Thanks for contributing an answer to Motor Vehicle Maintenance & Repair Stack Exchange! Please be sure to answer the question.

What causes an engine to stall at idle?

If the ISC valve is gummed up with fuel varnish or dirt, it may stick, preventing the engine from maintaining the proper idle speed when the throttle closes. A faulty idle speed control circuit may also allow the engine to stall when idling if it fails to compensate for idle loads placed on the engine by the charging system or A/C compressor.

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.

Is it normal to drive a Silverado at 500 rpm?

So I get into my truck this morning 2010 Silverado 5.3L and the rpm gauge reads 500 rpm. Is this normal? I seem to remember that it would idol at 1000 rpm but I can’t remember.

What to do if your Silverado is stalling?

There is a small hole in the throttle plate spray it in there. Load the engine up with the stuff and shut it off. Hook every thing back up, wait about 10-15 min then crank it up and give it a ride. Listen to me I hvae been fixing these trucks with this idle stumble and a/c inop since the electronic throttle body came out on the trucks.

Why does my Chevy Silverado idle at 500 rpm?