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I have a 91 Nissan d21 KA24E 4x4, when I first start it in the morning its in the warm up stage and misses pretty good smells a little rich then after driving it for a few min at a stop really choppy till it gets to its normal operating temp then runs fine any help!

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  • Cars & Trucks Master
  • 12,223 Answers

You must RUN the scanner /computer for easy diagnostic and fix it.
Remember the electronic vehicles now is very complicated.
You can have some PCM +ignition module+BCM+sensors, distributor faulty, etc.
God bless you

Posted on Jul 23, 2013

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Posted on Jan 02, 2017

dj_ricko_198
  • 128 Answers

SOURCE: High idle in cold weather

this is normal for a car of this age
carburetor type motors have a automatic choke
this is activating when you start your car as it is so cold
i would not worries about it
it is designed to make it easier to start your car when it is cold my car dose the same thing
hope this helps
ricko

Posted on Dec 27, 2008

  • 3 Answers

SOURCE: `91 Nissan D21 4 cyl MT Pickup won't idle when cold

sounds like the clutch isnt engaging properly in the situations you described. may need to check fluid levels if there ok. then may need to get serviced or checked at least

Posted on Mar 20, 2009

  • 66 Answers

SOURCE: rough running engine at temp

0340 is camshaft position sensor and the other 0325 is the knock sensor. Chances are you need to replace the sensors and good to go.

Posted on May 05, 2009

  • 14036 Answers

SOURCE: 97 jeep wrangler 2.5 auto, backfire and loss of power on warm day

COULD BE BAD PLUGS +WIRES + DISTRIBUTOR CAP AND ROTOR. CLOGGED AIR FILTER AND FUEL FILTER.FAULTY FUEL PUMP.RESTRICED EXHAUST SYSTEM.

Posted on Sep 24, 2009

iambanshee74
  • 3489 Answers

SOURCE: '93 D21 ka2.4. miss fire,surge, and runs rich

sounds like you have a very dirty mass air flow meter. invest in a new one and be sure to clean the throttle body with an appropriate cleaner and tooth brush.

Posted on Nov 03, 2009

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