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Okay so I have a 2001 nissan sentra auto 40xx miles! I've replace the harnes from dealer I've done timing chain I've done crank pos sensor and new ecm but imthe car is still running rugh and still is throwning a check engine light for crank pos sensor idk what the problem could be could somebody please let me know if u have any advice

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  • Expert
  • 318 Answers

Something is wrong with the valve timing and or the cam or crank sensor

Posted on Nov 27, 2012

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did your car have (ETS) electronic throttle control system
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Posted on Jul 14, 2008

SUL827
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SOURCE: 04 Quest SL

Let me get this straight, you took your Nissan to the NISSAN dealer (who has extensive data and resources) and they said you needed an engine due to the timing had jumped and you declined due to the $6500.00 price. So you took it to the independent guy (local mechanic) that is guessing and throwing parts at it and most likely making it worse because you only needed an ECM that the dealer said was ok, 2 cam sensors and 3 coils (but hey its cheaper than an engine). So now you have a used ECM that doesn't belong in the vehicle that you most likely didn't need and are awaiting the correct one from Nissan. You now have or will have 3 working ECMs, 4 good cam sensors and nine good coils in a van that will still not run. Ok and now you think that the independent guy (local mechanic) doesn't know what he's doing and you want to know if anybody knows a good mechanic. Whatever gave you that impression?? I know now what the problem is.....it's you. You tried to save money but it didn't work. Hopefully you didn't do any further damage but who knows. Get your money back from the local mechanic and take your van to the dealer to get the engine you need before someone else takes you for a ride or damages your vehicle further.

Posted on Sep 16, 2008

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SOURCE: 2003 Nissan Altima 2.5S, Check Engine Light Problem.

this problem could be caused by the mass air flow censor, i had the same problem with my car. it is really pricey at the dealer so you might want to check elsewhere for this part. I found one at a scrap yard for 85% less that the dealer and i also got life time warranty, the dealer does not offer any warranty on this part.

Posted on Oct 22, 2008

pal03246
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SOURCE: Nissan Sentra 2001 gxe with code p0420

You will need a new catalytic convertor assembly. Yours is below treshold efficiency in other words its "no good".If you have it replaced, ask the garage/dealer to give you the old one back. Its worth some cash if its full. It doesn't matter thet it failed. They are going after the mesh inside of it and that is worth some $$$$. May not be much , but better than nothing.

Posted on Jul 26, 2009

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SOURCE: 2003 Dodge Neon: P0016 (already replaced sensors, belt, tensioner

the computer may need to be reflashed. if it is running then it is not a bad sensor. either of those being bad would cause it not to run.

Posted on Aug 08, 2009

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1 Answer

I replaced the crank sencor and its still throwing a code


The car only blue books for about $3000. I hate to suggest it but financially it may be better to cut your losses on this one. A used engine with 7000 miles on it for this car could have been purchased for $1200.

The code that you are getting does not necessarily mean that the crank sensor is defective. Those codes are to be used as symptoms only. If the crank sensor is bad the car won't run at all.

If it's running rough you need to check the health of the ignition system, fuel system, and the timing.

Starting with the easiest to the more difficult.
1. Pull the spark plugs and read them. Are they fouled/damaged/wet/burnt?

2. Check the engine compression. Is the compression low?

3. Check the timing marks. Did the timing belt slip off a tooth with the cam gear? Is the timing belt worn out? Make sure these marks line up with what your manual shows.

4. Check your fuel pressure with a gauge. Does it match what the manual states it should be?

5. Is the coil pack weak, out of tolerance? Check it with a multimeter, make sure the ignition wires are in good shape. If you've never changed them, this would be a good time.

If you check these things you should find the problem...throwing parts at it till the problem goes away is the most expensive way to fix it.

Nov 27, 2012 | 2001 Nissan Sentra

1 Answer

2001 nissan sentra belt or chain?


This vehicle has a timing chain.

Oct 22, 2012 | 2001 Nissan Sentra

4 Answers

I have 103,500 miles on my 2002 nissan sentra when should I change the timing chain


The timing chain doesn't really have a maintenance period. They don't have a habit of breaking or stretching. Timing belts on some vehicles do have a recomended replacement period. Locate your local NTB, Firestone, or Sears for the maintenance schedule.

May 31, 2010 | 2002 Nissan Sentra

1 Answer

How do i know if my timing chain needs replacement on my 1994 nissan sentra


This information should be in your owners manual. Its usually done by milage . If you don't have an owners manual call your local dealer ship he'll tell you.

Apr 12, 2010 | 1994 Nissan Sentra 4-Door

1 Answer

Nissan Sentra 2001 gxe with code p0420


You will need a new catalytic convertor assembly. Yours is below treshold efficiency in other words its "no good".If you have it replaced, ask the garage/dealer to give you the old one back. Its worth some cash if its full. It doesn't matter thet it failed. They are going after the mesh inside of it and that is worth some $$$$. May not be much , but better than nothing.

Jul 08, 2009 | 2001 Nissan Sentra

2 Answers

2001 sentra timing issues


It has a belt. You should replace it soon.

Jun 23, 2009 | 2001 Nissan Sentra

1 Answer

2002 Nissan Sentra Maintenance


i would get the 90k major service done and i would also have the hydraulic chain tensioner replaced, have ur battery... chargeing and starter system checked as well..make sure u dont have corroded terminals at the battery.

Apr 10, 2009 | 2002 Nissan Sentra

1 Answer

No start 2002 nissan sentra 1.8 litre


Its almost impossible for this car to jump timing or break chain. If the vehicle still had adequate power while driving before this happened the chain is fine. About the recall, that's the most likely thing that is causing you NOT to start the CRANK SENSOR. To find out if recall was performed call Nissan's 800 number or any local nissan dealer in your neck of the woods and by giving then the VIN number the will be able to tell you if it was done. Good Luck Thanks for using FIX YA

Jan 04, 2009 | 2002 Nissan Sentra

2 Answers

02 nissan sentra


Its possible, that you crank angle sensor is failing. Also, that vehicle had a issue with the ECM/computer. Nissan put a set of foams inside of the ECM box to prevent the ECM from movement, however the glue that they used to attach the foams was causing the ECM to fail. The vapors from the glue would eat up vital circuits inside the computer causing failuer. I would go to your local dealer and provide them with your VIN nujber. With the VIN number, thay can check to ysee if the foam campaign has been doen and also the crank and cam angle sensor camaign. Nissan volunteraly replaced cam and crank angle sensors if the VIN number matches the campaign. Your ECM/computer is covered for 8years or 80000 miles. We are also starting to see timing chains getting stretched causing running issues, but you will have a "check engine light on" for cam angle sensor circuit. Anyhow, go to your local friendly NIssan dealer and have them run your VIN number to see if you have any open campaigns (crank and cam sensors, ECM foam etc.) Good luck and let me know what you find.

Nov 03, 2008 | 2002 Nissan Sentra

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