Question about 2003 Nissan Altima

1 Answer

ECM 2003 Altima

I just purchased a 03 Altima for my daughter that the dealer said needed a new ECM. I had a replacement installed by my mechanic, then had the car towed to the dealer to have it reflashed. Between the ECM, keys and two other sensors being reflashed at cost of $300, the car cranked and ran fine. A couple of hours later it would turn over, but not crank. Anyone have an idea of what it could be. Paying to have it towed again is getting costly.

Posted by Vicki Fagedes on


1 Answer


  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Replace crank-positioning senser

Posted on Feb 03, 2009


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

My 03 Nissan Altima wont get over 2500 rpms

first check your fuel system, replace fuel filter, also check your fuel pressure regulator on your fuel rail it may be leaking internally if ok check your fuel pump operation. if your fuel system is ok then check for a restricted catalytic converter its a common fault I encounter with them. if that to checks out ok then have the ecm scanned by a shop or the dealer could be a faulty engine speed sensor or crank or cam sensor

Jan 18, 2015 | 2003 Nissan Altima

1 Answer

2003 Dodge Grand Cravan - Will not start.

battery cable ends. these vans were famous for it. if you have factory soldered ends you might want to consider changing them

Dec 12, 2012 | 2003 Dodge Caravan

1 Answer

2002 altima 2.5 won't start after replacing head gasket and set timing

the computer has to be re-programmed. At least that's what my mechanic did to my 03 and now it starts fine

Mar 10, 2011 | 2003 Nissan Altima

1 Answer

Is there a fuse for the A\C in a 03 Nissan Altima

All major systems such as A/C use a fuse but it's called a fusible link. These are designed to carry very heavy current flows, when these go they melt in half, they are located usually under the hood, they are held in place by 2 small screws, parts stores should carry them, but the dealer will. You must replace it with exactly the same type, nothing else will do.

May 30, 2010 | 2003 Nissan Altima

2 Answers

Need ECM for 2000 Altima

Have you checked in your local area for companies that deal in used or refurb. ecm..most request that you have your original

Jul 21, 2009 | 2000 Nissan Altima

1 Answer

Need New Seats

Take it to an auto upolstery shop, they may be able to repair the damage, or recover the seat.
Failing that, you can check the auto wreckers, and finally the dealer.

Hope this is of some help.

Apr 23, 2009 | 2003 Nissan Altima

3 Answers

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.

Oct 22, 2008 | 2003 Nissan Altima

2 Answers

03 Altima ( 2.5 ) crank position sensor - retired ASE Master Teck

does the check engine light flash or is it on when the car misfires?? Bythe way, Nissan has a new program available for your ECM/computer for the long cranking condition. Check with your local NIssan dealer. Also spark plugs are rated for 105K, You have 110K on it. Check your plugs and make sure, that you use NGK if they need to be replaced. Also, look at your overflow bottle. If its down, top it off to FULL mark and monitor the level for few days. See if it goes down in like a week. I have seen some headgasket problems, where the coolant gets into the cylinders and drown the spark plug, causing a misfire. Let me know what you find. Lets get to the bottom of this and lets fix it.

Aug 27, 2008 | 2000 Nissan Altima

Not finding what you are looking for?
2003 Nissan Altima Logo

Related Topics:

705 people viewed this question

Ask a Question

Usually answered in minutes!

Top Nissan Experts


Level 3 Expert

85239 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22485 Answers

gerry bissi

Level 3 Expert

4388 Answers

Are you a Nissan Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides