2000 gran prix 3.1 runs fine while driving, but when stopped at a light starts to idle rough

1996 Dodge Stratus stalls at stop lights and in idle - DodgeTalk ...

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Apr 10, 2003 - I replaced water pump on my 1996 stratus and now the car runs real bad, but only when coming to stop light or in idle. any suggestions on ... 2000 Stratus oil light comes on and car dies
Dec 3, 2011
97 Dodge Ram 1500, stalling while Idle (yes theres a few of these ...
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Rough idle/hesitation problem with a twist
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98 Grand Caravan stalls / surges on idle
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Clean throttle body and idle speed control valve.
Re- learn the idle speed control valve.

Rough Running Engine - James on Engines #2 - Bell Performance

https://www.bellperformance.com/blog/rough-running-engine

Apr 21, 2015 - When diagnosing an engine with a rough idle, there are certain things that must be ... If the problem does not reoccur, the codes will be erased by the computer. ... when accelerating the vehicle, which causes a higher fuel demand. .... it was water in gas...added added Gas LineAntifreeze/Water Remover.

you have a possible vacuum leak somewhere or maybe clogged egr

True of many cars. Happened to me too many times, fourin
or domestic.

Please include engine and mileage to help with answers. There is a sensor in the tube connecting the air box to the throttle body. Map, mass air flow sensor. It is delicate and pricey. The auto parts has a aerosol can of cleaner for about 8$ designed to clean this part. Carefully remove it from the tube housing and spray it off with the cleaner. This cleaner will attack the plentum and tube melting it causing air leaks if you use it in the tube. On a 3800 If you have coolant leaks or seeping check the plenum it may need to be replaced if it has not already been. They have a new style that is reinforced. This should smooth out the idle and clear up stalling if it's dirty. Air leaks can also cause an unstable idle and stalling at stop signs. Anti freeze can turn corrosive and should be changed. I change mine about every 3 or 4 years. Make sure if your engine contains aluminum parts ( block or heads) that you use the correct antifreeze when refilling or adding to existing levels. Green or orange. Read the label to make shure the product is correct for your car.

start with checking the fuel pressure first

check the coils

it sounds like you might want to scan your vehicle for sensors evaluation to determine what causing your rough idle if you have engine light on

get a trouble code from Autozone or other store for free. It sounds like a sensor problem to me. The Idle Position sensor for example.