car dying at low rpms - Nissan Forum
QR25 2.5L Engine Engine Discussion: 2002+ Sentra SE-R and SpecV

 
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post #1 of 6 Old Jun 27th, 2005, 10:04 PM Thread Starter
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car dying at low rpms

i have a 2002 spec v. i have been having troubles the last couple days keeping the engine running when i am either coming to a stop light or the car is idling. it normally idles at 750 rpms or so. the car is in neutral when this happens. can anyone help me?
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post #2 of 6 Old Jun 27th, 2005, 10:12 PM
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Quote:
Originally Posted by CowtownSpec
i have a 2002 spec v. i have been having troubles the last couple days keeping the engine running when i am either coming to a stop light or the car is idling. it normally idles at 750 rpms or so. the car is in neutral when this happens. can anyone help me?
is idle different than before and have you tried the idle relearn yet (IIRC this will relearn fuel maps)?

what brand and octane gasoline do you use and have you ever cleaned the injectors?

have you had all recalls done and are all services up to date?

do you know the build date on your car?

are you modified?

have you done anything cleaning wise or modification wise in the past month to your car?

nothing to say
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post #3 of 6 Old Jun 27th, 2005, 10:15 PM Thread Starter
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i have only had the car for a week so it is still stock. only have a K&N drop in air filter. i use either chevron or 76 gas. 91 octane. havent taken it in for any checkups yet. where do i adjust the idle? i looked for the idle screw but couldnt find it. no shop manual came with the car.
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post #4 of 6 Old Jun 27th, 2005, 10:24 PM
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there is no idle screw...the idle can only be adjusted via OBD2 CONSULT2. stock idle ranges from about 625-750 and for your application, you do not need the idle itself adjusted. you can do the idle relearn and this generally cures many ailments although you may need a trip to the dealer. chevron is as good as gas gets and if you are not having cold start problems, it is less likely to be the fuel pump as the cold start problem is the main symptom. if nothing else, it could be a crack problem that does not often happen but like all cars every occasional vehicle has one. you can check nissan's website for TSBs which are technical service bullitens. they will list common problems that happens to the car and the symptoms if they occure. if you have one of these problems, you will have no problem getting the dealer to replace it with no out of pocket expense.


I would first try this...it is the idle relearn.
-Warm up engine.
-Turn ignition switch “OFF” and wait at least 10 seconds.
-Confirm that accelerator pedal is fully released, turn ignition switch “ON” and wait 3 seconds.
-Repeat the following procedure quickly five times within 5 seconds.
a. Fully depress the accelerator pedal.
b. Fully release the accelerator pedal.
-Wait 7 seconds, fully depress the accelerator pedal and keep it for approx. 20 seconds until the MIL stops
blinking and turned ON.
-Fully release the accelerator pedal within 3 seconds after the MIL goes ON.
-Start engine and let it idle.
-Wait 20 seconds.

nothing to say
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post #5 of 6 Old Jun 27th, 2005, 11:24 PM Thread Starter
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by MIL do you mean mileage or is there a light on the dash that says MIL?
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post #6 of 6 Old Jun 27th, 2005, 11:25 PM
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it is the Check Engine Light that is yellow/orangish.

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