Question about 2001 Pontiac Grand Am SE

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Engine starts and catches but as it goes to idle, engine immediately stalls.

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Fuel pump relay

Posted on Aug 28, 2010

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Posted on Jan 02, 2017

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2004 mazda 3 starts but will not idle stalls under 2000 rpm


You need to plug it in to an engine diagnostic computer, it is probably a sensor that needs to be replaced. (Coolant temperature sensor is a probable cause) but you should plug in to engine diagnostic computer.

Apr 13, 2014 | 2004 Mazda 3 1.6

1 Answer

98 freelander stalling fault


Explore the problem to see if its the power steering, or physical steering or engine:
Does it stall when its in neutral and you go to full lock?
If so its the power steering, or the engine isnt ticking over fast enough to generate the extra pump pressure needed when on full lock. Check pump belts are good and tension is correct. Then buy a used idle valve and swap it out.
Also do basic checks to see if wheels are catching on some part of car. Jack it up so front wheels are off ground, on full lock in neutral do the wheels turn freely, or catch on something? Slowly lower the vehicle down and check same as you do it. When its down put it in gear and see if it stalls.

Dec 15, 2013 | Cars & Trucks

1 Answer

2000 Caravan won't start cold unless I rev engine for 5 min


You need to check the cold choke set up, which may be called a IAC
Idle Automatic Control this is sensor works the am starts for cold or hot idles...
Do you have a light on??

Oct 23, 2013 | Dodge Caravan Cars & Trucks

1 Answer

Car goes great for awhile and then engine stalls when stopping , and is hard starting unless you leave key on for awhile to let fuel pump catch up.


This is not the fuel pump, this is an idle air control issue. Either the idle air control valve is gummed up or the throttle body interior is filthy or both, the fix is very cheap. Disconnect the air ducting between the air filter cleaner and the throttle body. Using WD40 spray and a cloth clean the throttle interior and throttle plate until like new. Pivot the throttle plate by applying pressure with your fingers and clean in as far as you can behind the throttle plate. Remove the idle air control (IAC) valve from the throttle body and clean the associated passageways and pintle valve. Make sure the electrical connectors to the IAC is clean and reassemble everything. You should notice an immediate improvement to engine performance from start up and no more engine stalls.

Dec 29, 2010 | 1998 Chevrolet Monte Carlo

1 Answer

What happens if the idle control valve on a 2000 honda accord is not immediately replaced?


The idle control valve (IAC) controls the idle speed by changing the amount of air that will bypass into the intake manifold. It's activated by the ECU (engine control unit; your computer) depending upon the running condition of the engine (A/C on or off, Power steering, cold and warm running, etc.). So, you may have some inconsistency in your idle speed, and you may burn a bit more gas if the idle goes a little high, or you might stall now and then, but I wouldn't think it was immediate problem situation. Don't, however, let it go on forever.
Hope this helps you.

Nov 02, 2009 | Honda Accord Cars & Trucks

2 Answers

If my idle air control system is bad what kind of problems could this cause? What would be the effects?


A bad IAC unit will cause poor driveablility and poor/high idle, and also stalling and starting issues. There is really no harm by being bad but during rapid deceleration if the IAC does not catch the RPM's the engine could stall out; not a good thing if you were going 60 mph. Remove the IAC motor and clean the valve and also the chamber that it goes into with a good throttle body cleaner and that should really help. Carbon buildup is a big factor in IAC failure. Most CEL will not show a malfunction code with a bad IAC motor.

Aug 29, 2009 | 2006 Chevrolet Trailblazer

1 Answer

Pontiac G6 2005 - starts then stalls immediately


Chage the throtle possition senser.

Jul 03, 2009 | 2005 Pontiac G6

1 Answer

2002 Regal - Engine kills right after starting cold.


There are 3 things that cause this, 1st and most common is a dirty idle speed control valve, 2nd is carbon on the back of the intake valves, last but not least is the wrong octane of fuel, if it requires 89 Octane and 91 or 92 is used the engine will stall code.

To clean the dirty idle control valve follow this procedure:
Here is the most common cause of surges and stalls, it is the idle speed control air-bypass valve and throttle valve, they get full of gunk over the miles and cause idle issues (stalls) like yours, Get a can of intake cleaner from any local parts store, not carb spray, intake cleaner, it is made by a company called CRC, remove the air intake hose to the engine, hold the idle high so the engine won't stall, then spray the can of cleaner into the intake while keeping the engine running, use at least 1/2 the can, shut down the engine and disconnect the battery for 5 minutes, then restart and complete a number of mixed driving cycles, town, freeway, stop and go etc., after a few days the problem will go away as the system will relearn to the clean intake.

Nov 17, 2008 | 2002 Buick LeSabre

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