Question about 2002 Nissan Altima

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Starting problems in hot weather. My 2002 Altima has had some hard starts the last three weeks and has failed to start twice. Each time after letting it sit several hrs it has started right up. My mechanic can not figure out what is wrong with it. When I start it, it makes some chugging noises and either gets going or fails to start. I have tried giving it some gas and that has not helped get it going the two times it failed. It has 131,000 miles on it currently. Thanks for any insight!

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Posted on Jan 02, 2017

Tech Jenkins
  • 359 Answers

SOURCE: Rough, chugging when driving and conking out

Could also be a faulty mass air flow meter, or throttle position sensor. It's hard to tell, you need to take it to a shop to be properly diagnosed.

Posted on Sep 05, 2008

  • 962 Answers


Clean out the Idle Control valve. remove the air duct from the aircleaner system. spray directly into the valve opening. it is a small component with 2 small hoses . Sludge build up and oil deposits will dirty the valve. If that does not work you can remove it and spray directly into the 2 holes on the underside of the valve. Clean the air filter or replace it.if that is not it, then it is probably the EGR valve.

Posted on Nov 18, 2008

  • 260 Answers

SOURCE: nissan altima starting problem

i think replacing the sensor is in order. i know all car makes have "recalibration updates" for the ecm and should be done, but have rarely fixed vehicles on just that alone. and your symptoms suggest the sensor could be intermittently bad

Posted on Nov 23, 2008

Big Poppa Ma
  • 302 Answers

SOURCE: nissan altima starting problem

This is definitely a camshaft sensor malfunction, you can get away with not replacing it for awhile but eventually when it goes the car will stop starting, the sensor will need to be replaced hence why your car isn't starting but intermittently. Its easy to do and will take about 30 minutes to do, its just a pain to get to.

Posted on Dec 07, 2008

  • 5370 Answers

SOURCE: 2002 Nissan Altima 2.5S starting problem

Car not starting or turning over indicates towards multiple possibilities. It can be issue with battery or weak battery. But if battery checks out ok, then it can be starter issue or faulty alternator or problem with low fuel pressure or no spark at spark plugs due to dirty spark plugs or faulty ignition coil or injectors getting cracked or dirty and needs to be cleaned.

To confirm the problem, the basic troubleshooting is required.

Click this link below and follow the troubleshooting:------


This will help.


Posted on Feb 18, 2012

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I have seen this issue a lot- especially this time of year when it's starting to get pretty cold overnight around here.

If the vehicle won't start right away, stop cranking. Turn the key to the ON position and depress the accelerator about halfway down and then crank the engine.

This should resolve your incident. This is actually the procedure that was supplied to us directly from Nissan for cold weather starting tips.

Because cold starting requires a richer air/fuel mixture, the computer REALLY richens the mixture.

I hope that this is helpful to you!

Nissan Scope Technician- 10+ years experience in Nissan dealership.

Oct 25, 2008 | 2002 Nissan Altima

1 Answer

Rough, chugging when driving and conking out

Could also be a faulty mass air flow meter, or throttle position sensor. It's hard to tell, you need to take it to a shop to be properly diagnosed.

Sep 05, 2008 | 1995 Nissan Altima

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