Question about 2001 GMC Yukon Denali

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Yukon was running and all the sudden died started up service engine light came on idles super low in gear and dies unless you put foot on gas and brake if stopped

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Easiest & probably cheapest way is to run into an autozone or Pep Boys & get them to scan fro codes for free & go from there. Get back to us with code(s) unless it's a simple one & part is right there at store to fix it.

Posted on Jun 19, 2009

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Posted on Jan 02, 2017

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We just got a 2004 Chevy Express. When you start it and put it in gear, it dies. The battery appears dead and you can jump start it.


IAC - idle air control problem possibly .( You can drive it if you use your left foot to brake but keep the gas pedal down to keep the RPMs up.) Wouldn't be a fuel filter , if fuel filter was clogged partly it would idle ,but would lack power ,low fuel pressure at higher speed's . Do you know what IAC valve is ,an how it works ?
Idle Air Control Valve
Or maybe the EGR valve pintle is covered with carbon an sticking open .
Or possibly a dirty or bad MAF sensor - mass air flow sensor - the PCM - engine computer needs info from this sensor so it know's how much fuel to feed the engine .
Hooking up a professional type scan tool to view engine sensor data cut's down on guessing as too what the problem is .

007 Idle Speed Problems Scan Data for Idle

Nov 09, 2017 | Cars & Trucks

1 Answer

Engine stall when put into gear.


There are a few possibility on this one. If you run it out of gas or really low on gas you could of sucked junk up from the bottom of the tank and you will need to replace your fuel filter. Another is that your fuel pump us going bad and you would need to check the pressure. Your throttle position sensor may have gone bad. Your idle control valve is another. Your map sensor or mas sensor could be bad

Apr 22, 2014 | 2000 Dodge Ram 1500 Truck

2 Answers

My truck wont start unless i prime the carborator first, then it wont stay running unless i rev it high just before i put it in gear, or im accellerating...


To start with, you have a throttle body instead of a carburetor.
On that throttle body is a component called an air control valve.
That valve is how the computer controls the idle speed. It should open and close the air flow into the intake manifold as needed.
Is the check engine light on when you are driving ? Have you checked the fuel pressure ?

Jul 30, 2012 | Chevrolet Silverado 1500 Cars & Trucks

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I have a 2000 ford explorer limited edition 5.0L V8.. The vehicle starts fine but after a while at idle it will sometimes die slowly.. if i put it in gear it also wants to die out. if I hold my foot on...


Hi, this problem can be caused by a broken fuel pressure regulator diaphragm. With the engine running, remove the vacuum line from the regulator. If gas comes out of the regulator at the vacuum port, replace the regulator.

Jun 24, 2017 | Ford Explorer Cars & Trucks

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91 Buick Century-About 75-80% of the time I will start my car or sometimes after I've been driving it for 30 min or less the service engine light will come on and stay on or flashon and off . It idles...


You need to get the trouble codes out of the computer first. Take it to your local autoparts store and they can hook up a scan tool and retreive codes this give you a general area start looking for the problem.

Apr 25, 2011 | 1991 Buick Century

1 Answer

It starts but will not idle. if you take your foot off the gas it dies. sometimes it will run good and i take it around the block it will die when i come to a stop unless i put it in neutral and keep my...


Possible areas of concern are:
  • faulty MAF (Mass Air Flo) sensor
  • bad EGR (Exhaust Gas Recirculator
  • bad TPS
It's most likely a combination of the 3 but the main cause would normally be the TPS (Throttle Positioning Sensor) which regulates engine idle speeds under different conditions.

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5 Answers

2000 toyota echo dies in gear


Sounds like a vacuum problem with the transmission. Modulator maybe?
Take it to an auto trans specialist.

Jan 07, 2009 | 2001 Toyota Echo

1 Answer

2000 Contour dies at low idle


you could try to clean the mass air flow sensor

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2000 jeep grand V8 low idle then dies


A faulty gas cap can cause the sensor to come on.
Clean out the throttle body with a cleaner and see if the idle improves.

Oct 07, 2008 | 2002 Jeep Grand Cherokee

1 Answer

Truck Starts but won't stay running


if the battery voltage gets low the computer will lose its memory...the idle air control is not ure what to do.. drive the vehicle for a while ...you may have to 2 foot it but eventually it should idle

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