Idles when started, but why does it quit when put in gear or accelerated?

Hello. It seems one or more of your car's 'fuel injectors' is/are 'flooding' your cars engine. The excess fuel 'ignites'; making the engine 'race' at high engine speed yet it won't accelerate. Good luck and keep me informed; if you want to.

Something mechanical, ignition, or fuel.
It can run rough under a load such as in gear and ok in neutral with no load. Have you checked the plugs and dist cap ?

First thing to try would be different fuel. Use a fuel stabilizer and fill with good gas. see if that helps. Also, check the fuel pressure.

Clutch plate and pressure plate seem to be too weak to pull the car. Or one of the CV joints is detached from the gear box. To test the clutch plate, park the car on flat surface. Pull the hand brake up, start the car, depress the foot brake pedal, depress the clutch pedal, put the car in 1st gear, press the gas pedal and leave the clutch pedal at once, while keeping the brake pedal depressed.
Follow one of the two following statements:
1. Engine does not shut down and remain start. (Clutch plate, pressure plate and clutch bearing defective - Replace all as a set)
2. Engine shuts down. (Clutch system is OK and does not require any repair).

their are quite a few reasons --needs tune-up--bad gas--throttle body clogging failing--cat converter failing--egr valve carboned up -fuel filter -these are a few

For this types of problem,there are few help inks to troubleshoot the problem.Click the link below to go through the troubleshooting procedure to resolve the issues :----Idles rough and quits when gas pedal is pressed less? http://technoanswers.blogspot.in/2012/01/1999-ford-f-150-idles-rough-and-quits.html-----------van idles rough? http://howtobyme.blogspot.in/2012/01/2004-ford-freestar-van-idles-rough.html
--------------runs lean and idles rough? http://technoanswers.blogspot.in/2012/02/ford-runs-lean-and-idles-rough.html
-----------Car still runs Rough after tune up? http://howtobyme.blogspot.com/2011/12/car-still-runs-rough-after-tune-up.html
------------Idle flair is noticed on car? Rough idle? car will not idle? Erratic idle speed? http://technoanswers.blogspot.in/2012/02/idle-flair-is-noticed-on-car-rough-idle.html
----------High rpm in neutral? Inconsistant high RPM in neutral? http://technoanswers.blogspot.in/2012/02/high-rpm-in-neutral-inconsistant-high.html
------------Engine Backfires? http://technoanswers.blogspot.in/2012/02/jeep-backfires.html----------- Nissan stalls and bucks on Acceleration?

http://technoanswers.blogspot.in/2012/02/nissan-pathfinder-stalls-and-bucks-on.html

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Nissan Pathfinder Backfires? http://technoanswers.blogspot.in/2012/02/nissan-pathfinder-backfires.html
---------How to adjust rpm? http://schematicsdiagram.blogspot.com/2011/12/how-to-adjust-rpm-on-2009-dodge-charger.html
------------Engine cuts out at 3000 RPM? http://schematicsdiagram.blogspot.com/2011/12/engine-cuts-out-at-3000-rpm.html
----------This will help.Thanks.

your vacum leaks has alot to do with it have vacum leaks fixed auto parts store sells the correct size hose you need at a ver fair price fix vacum leaks first then see how it runs after thatcheck fluid level in transmission and change transmission filter

so the engine is idling and when you put it in gear to drive off it dies?
If so start looking for a vacuum leak. Those older cars hoses like to deteriorate.

Your idle air control valve may be dirty or the wire harness may be damaged. First try cleaning the throttle body with throttle body cleaner and make sure you use all the can up and try to get the idle air control valve cleaned. A faulty or dirty idle air control valve will cause engine to stall when put in to gear from idle. Good luck and hope this helps. Keep me posted, be glad to help you get your car running 100% soon.

When you open the hood of the the car have a buddy accelerate in park and listen for a vacuum leak this is the likely cause it sounds lik your loosing boos pressure. Also, get a tune up there maybe a list of problems. Hopefully it's not your transmission!