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when at the stop lights , you will have your foot on the brake as it will still be in drive or in gear and you don't want the car to move
a simple test is to apply the hand brake to stop the car and don't touch the foot brake
if it idles ok but cuts out when you apply the foot brake , replace the brake booster as it has a vacuum leak that is causing the problem
you can do this test in the garage by starting in neutral and allowing the engine to idle , then apply the foot brake
iof it dies it is the booster
run a teat. Remove the vacuum line from the brake booster and plug off. Start engine and see if it idles normally. . Put your foot on the brake pedal and apply the brakes . If the idle is still normal replace the brake booster as there is an air leak in the diaphram.. The service light is probably recording misfiring and air fuel mixture problems.. run fault codes any way just to check it out .
disconnect the vacuum line to the brake booster and plug off to the engine. run the engine and apply the brakes and see if it still cuts out. If not the reattach the vacuum hose and re apply the brakes . If there is a stall then replace the brake booster as there is a fault in it that is allowing air into the manifold on brake application. This problem is not connected to the CPU by sensor so no faults would be recorded.
engine cutting out is a sensor probably the timing sensor. needs replacing. as for braking would think you have a leak in the air line. even with the engine not funning you should be able to apply the brakes upto 3 times.. think this model is not fitted with abs like my sisters. when engine is running rev upto 3000 rev's if it starts to judder. also listen for hissing sound, if you find one repair it. most problems are down to a leaking air line.
Check your air intake systems as they are usually an issue when it comes to braking and engine performance. If they are faulty then you probably have to replace them. Remember air intake systems can generate many problems as far as your engine performance is concerned. You can follow my AFE Performance to find out more on air intake systems and their operations..
sounds to me like a severe vacuum issue...pump the brake pedal quickly while in park if engine start to stall or does stall then take carb cleaner and spray vacuum lines and around intake near gasket engine will rev or die out when you hit a leak...very careful inspection of lines if no money for carb cleaner..or it could be brake booster is bad...loud air sound when pushin or holding pedal would indicate and issue there
Can you give me some more information? Does it run fine if you do not apply the brakes? This could be a failing brake booster and you are loosing vacuum when the brakes are applied....
Did your mechanic tell you what code triggered the check engine light on,It sounds like your alternator is not charging enough,Then you apply the brake lights which take more power away from the engine.
It may be that your power assist booster behind the brake master is leaking and when you apply the brakes it robs all your vacuum. Try plugging the hose that goes to the power assist boost and apply the brakes. If the engine stayhs steady thats your problem!
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