Question about 2002 Nissan Sentra

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2002 nissan sentra gxe 1.8l haves horible knocking sound form engine. sound is at idle, low rpms, or load like going up a hill and with a/c on. when a/c is of still does it not as loud. car haves cel light witch was maf sensor and coolant temp sensor and remains on. i've replaced all and also throtle cable, dampner pully, thermostat, and oil changes are on time. everyday it gets louder. ive added fuel treatment and injector cleaner. car does not overheat. also deleted the cat in case of it beeing cloged.

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  • Nissan Master
  • 1,153 Answers

Check for timing belt slapping inside of cover. Should have been changed at 60,000 miles. The cover has an inspection hole. Remove plastic plug to inspect.

Posted on May 20, 2017

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6 Suggested Answers

6ya6ya

6ya staff

  • 2 Answers

SOURCE:

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Posted on Jan 02, 2017

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Anonymous

SOURCE: 2000 nissan sentra

You prpbably need a new ECM/computer. Nissan had a problem with the ECM box and the foam inside the box. The glue, which Nissan used to attach the foam onto the box EATS up your computer internaly. The vapors from the glue it self damage the ECM/computer. Nissan actually has a campaign to remove the foams out of the ECM box. By the way ECM has 80000 mile warantee, so if your car has less than that, Nissan will replace it for free. I see it all the time. Sentra with heater circuit code
needs an ECM 95% of the time.

Posted on Jul 17, 2008

Anonymous

  • 2 Answers

SOURCE: My 1993 Nissan Sentra GXE

Have you checked your MAF? Sentra's are famous for them having problems, I havent had an issue with mine yet thank god.

Posted on Oct 03, 2008

mrgreenz

Daniel Arellano

  • 962 Answers

SOURCE: 2002 NISSAN SENTRA GXE 1.8 POOR IDLE LACKS POWER IDLE FLUCTUATES BETWEEN 1800 TO 1100 RPM

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 .

Posted on Nov 10, 2008

Bill Hackett

  • 383 Answers

SOURCE: 1997 Nissan Altima with idle jump

The description sounds like a technical Service Bulletin Nissan came out with on your car. It fits your description to a "T".
However, the codes you are getting are not what the service bulletin reports. The code they say it sets is DTC 0400 which relates to an irregular EGR operation, causing a problem where it will not maintain an idle or Will idle roughly. There is not a recall campaign on this item.

As far as misfire problems: Nissan had a service bulletin out on problem ECM's which caused this problem. Check with your local dealer. This may possibly be covered under warranty.
The reference number is NTB97-026 The bulletin was issued March,12,1997 There was no recall on this item.
Good luck to both of you.

Posted on Apr 07, 2009

Geoff Walton

  • 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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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 .

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