Question about 2008 Chevrolet Silverado 1500 2WD

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I have a 2008 chevy siverado I took the throttle body off and cleaned it, now it idles at 3000rpm. Does anybody know whats wrong?

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 59 Answers

SOURCE: what weight gear oil do i need 99 chevy Z71

I believe that it is 80w90 but you also have to add differential additive for locker that is inside. you can purchase additive at chevy dealership, napa, or other parts stores just make sure it is formulated for gm.

Posted on Dec 22, 2008

MrScary66613
  • 1990 Answers

SOURCE: 92 Chevy Silverado 1500 (350) throttle body question.

That Absolutely could be the Problem. Have you Replaced the Fuel Filter Yet?

Posted on Jan 04, 2009

  • 150 Answers

SOURCE: idle at 1500 to 2000 rpm

Most likely the throttle body gasket (between the throttle body and the intake manifold) is leaking.

Posted on Feb 12, 2009

badealer888
  • 414 Answers

SOURCE: i need to clean my throttle body low rpms at idle

There are a number of brands for this on the market i recommend
B G brand , Valvoline and SeaFoam.

Be careful not to get cleaner on any sensor ends.

Posted on Jul 12, 2009

Wood Chuck
  • 29 Answers

SOURCE: 1995 CHEVY VAN 20 305 WONT IDLE

Check your fuel pump presure. Pump is in the tank. Also try and loosen the fuel cap, the tank vent may be stopped up.

Posted on Sep 15, 2009

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Try cleaning the throttle body and the idle speed control valve, they get full of sludge and this causes stalling. Use a product called CRC Throttle valve cleaner on both parts, DO NOT USE CARB CLEANER IT WILL RUIN THE PARTS.

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Hight idle


Bad idle solenoid. Located on throttle body. It's black. Plugs in to wiring cable. You need a torx bit to remove. It's a cheap and easy fix. Also, get some throttle body cleaner and a tooth brush. Saturate the inside of the throttle body with cleaner and scrub out the black soot. Do this with throttle body in wide open position. Be sure to clean the edges of the butterfly good. They soot up and stick preventing throttle body from closing all the way.

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The check engine light is on and the car is idling high and jerking while stopped?Does anyone know whats wrong with it. I have a 2009 chevy hhr. Thanks


No one is going to know what is wrong with it. You must find out why the engine light is on. The PCM has detected a fault in one or more of its systems. In order to know what the fault may be you must retrieve the codes stored in it. Most auto part stores will hook up a generic OBD II code reader for free. But since its an 09, it should be under warranty. If you tinker with it, can't fix it so then take it to the dealer, they may deny your warranty claim because you worked on it first.

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2003chevy pu dies at stop lights, low idle whats wrong?


yea id definately try cleaning ur throttle body 1st. My 03 1500hd had the exact same bad idle after my battery went bad it would die at lights unless i kept foot on gas i cleaned throttle body runs perfect now took 30min cost 8$ for cleaner at autozone and theres how to videos on you tube

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1 Answer

Hi I own a 2005 Honda CRV 2.2 CDTI. When I reach 2000rpm the rev's shoots upto 3000rpm then immediatley drop back and the car accelerates properly. This is becoming a regulary problem. Thank you


PROBLEM COULD BE IN THE THROTTLE BODY SINCE IDLE SPEED CONTROL IS PART OF THE THROTTLE BODY.THE HONDA THROTTLE BODY UNIT IF YOU DISCONNECT IT CLEAN IT.THEN YOU HAVE TO USE HONDA DIAGNOSTIC EQUIPMENT TO PERFORM IDLE RELEARN PROCEDURE AND DO A TP POSITION CHECK IN ETCS TEST.ONLY THING YOU CAN CHECK IS LOOK FOR LOOSE OR DISCONNECTED VACUUM HOSES LOOK FOR LOOSE THROTTLE BODY BOLTS OR DAMAGE GASKET.

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2006 chevy express 2500 van with 4.8L idles really low, when you floor it it bogs down, after you let off the gas it dies, replaced the fuel pump already


Clean the throttle body with throttle body cleaner and make sure the air filter is not dirty or plugged.Also clean the mas air flow sensor with mass air flow sensor cleaner.Give this a try and let me know if it took care of your problems.Hope this helps.Good luck.

Sep 05, 2010 | 2006 Chevrolet Express

1 Answer

When i start the engine it will run at about 3000rpm .i checked the cables at the carb and the gas.what else could it be pedal


Check for vacuum leaks. Check PCV hose and other vacuum hoses. Spray carb cleaner around intake, throttle body and vacuum hoses while idling in park. If spraying anywhere causes a change in idle. that area has a vacuum leak.
Possible IAC motor dirty or defective. Remove it. Clean the IAC plunger tip and the throttle body passages with air intake/throttle body cleaner spray can. Reassemble and start vehicle.

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