Question about 2001 Nissan Sentra

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2001 Nissan sentra gxe starts when engine is cold, rough start when engine is warm. What do I have to fix?

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When a hot engine is hard to start, most of the causes are fuel related problems. Fuel cannot circulate well due to the way in which vapor blocks it.

To troubleshoot the problem with step by step details,click the link below:
http://carrepairworld.blogspot.com/2015/04/engine-hard-to-start.html

This will help.
Thanks

Posted on Apr 15, 2015

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Posted on Jan 02, 2017

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landsend
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SOURCE: 2002 nissan sentra gxe computer

buy a used unit from the junk yard.

Posted on Mar 21, 2009

  • 1 Answer

SOURCE: COLD START ROUGH IDLE

I hate to be the barer of bad news, but may be the head gasket.

My car started with rough idle. Then very hard to start in cold weather. Next started overheating, but no output from heater. Trickling sound from behind dash board. Overflow bottle overflowing.......

I replaced the water pump, radiator cap, thermostat, coolant, fan belts, power flushed the system. Nothing worked. Some research gave me the answer.

The head gasket leak was allowing exhaust gases to enter the cooling system, displacing the coolant. After use, as engine cools, coolant is sucked back into the system and coolant seeps into the cylinder. This gets worse over time.

First thing you'll notice is the rough idle as the spark plug burns off the coolant in the cylinder. (This is especially true at low temperatures.) If it is the head gasket, the other symptoms will follow as time goes by.

Posted on Jun 03, 2009

pal03246
  • 726 Answers

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

  • 819 Answers

SOURCE: 2002 Nissan Sentra 1.8L Check Engine Light Low Coolant

check out the coolant temp sensor.

Posted on Nov 12, 2009

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