My 2002 nissan sentra gxe sometimes has no power when im trying to go somewhere. At most it gets up to about 15 miles an hour. I usually have to get off road when this occurs,turn it off and restart. What is causing this? Check engine light is on but has been most of the time I have had the car.

Part 1 -How to Test the Ignition COP Coils (Nissan 1.8L)

troubleshootmyvehicle.com > Nissan > 1.8L

Feb 12, 2013 - What Tools Do I Need to Test the COP Coils. ... coils (most commonly known as the COP ignition coils), on your 1.8L Nissan Sentra is pretty easy. ... When one COP ignition coil fails... that cylinder goes 'dead' due to a lack of Spark and is said to be misfiring. .... 2000, 2001, 2002, 2003, 2004, 2005, 2006 ...

Part 2 -How to Troubleshoot a No Start (Nissan 1.8L)

troubleshootmyvehicle.com > Nissan > 1.8L

Jan 17, 2013 - Checking for Spark With a Spark Tester. ... Your 1.8L Nissan will either have a distributor-type ignition system or the more modern COP ... A BAD fuel pumpwill cause your 1.8L Nissan Sentra to Crank but Not Start... since the ... Still, the other method that I've used to test for a lack of fuel... is spraying starting ...

2002 Sentra 1.8, no spark, code 0505... - Nissan Sentra Forum ...

www.b15sentra.net > ... > Technical Discussion

Nov 4, 2008 - 15 posts - ‎3 authors
I have never had a problem with the car before (02 Sentra 1.8/auto), so I had no need to post ... Originally Posted by Black B15 ... Join Date: Jun 2005 ... Can you see if the coilpacks are getting spark & work back from there? how many spark plugs do i need ? - Nissan Sentra ...
7 posts
Mar 19, 2010
Spark Plug Replacement - 2002 GXE 1.8L - Nissan ...
15 posts
Oct 12, 2009
1.8s starting problems - Nissan Sentra Forum - B15 ...
15 posts
Jun 23, 2009
No start on 1.8L 02 GXE - Nissan Sentra Forum - B15 ...
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Apr 11, 2009
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look on the back of the intake manifold, there are 2 or 3 ground wires that bolt to the back of the manifold. they ground the park netural switch and body control module if they are not hooked up or are loose it will cause this problem

The pump does have a filter on it but you should also have an inline fuel filter somewhere underneath your car, Check the pump when you turn the ignition key on the pump should run for a second or two then shut off if you can hear it , it is working. It is rare for a vechicle not to have an inline fuel filter but there are some models that don't have one. The filters on the pumps usually don't stop up that often,it's pretty rare.I would try to replace the inline filter call and ask your local part store if they have one for it and you will know for sure. And usually if the crank sensor is bad it won't crank at all.

Here is a diagram of the 1.8 exhaust from the service manual, you can obtain a full factory service manual for relatively cheap from Promanuals.net here.

good day Sir, try this link i hope this will help you

nissan sentra2002

Every 10,000 miles partial service; change engine oil and filter, air and fuel filter's, spark plug's and check brakes fluid pipes and pad's. Every 50,000 full service. partial service plus change cambelt, check gear diff and power steering oils. Owners manual or any mechanic will let you know oil grades etc.

SERVICE IT .....OIL PLUGS, AIR ,FUEL AND OIL FILTERS GET TROTTLE SENCOR AND THE MASS AIR FLOW SENCOR CHECKED

buy a used unit from the junk yard.

First off, nothing "blows" into the air filter. It would be getting sucked in from somewhere in your engine compartment. My guess would be leaking valve cover. Check around and feel for wet oil. That will also be a leak. Have you been going through more oil than usual? Check that also. Hope that helped.

Check for vaccume leaks and also you PCV valve. check the hose too. Visually inspect every vaccume hose you can find. Sounds like a leak .