Runs rough when cold?

Tiny
HOWARD JOHNSTON
  • MEMBER
  • 1991 NISSAN HARDBODY
  • 2.4L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 104,860 MILES
The truck listed above acts like it is running on two cylinders when cold. Runs fine when it's good and hot.
Monday, December 18th, 2023 AT 3:35 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,310 POSTS
Hi,

When was the last tune-up? When it gets colder outside, the fuel mixture is much richer when it's first started. If you have old spark plugs, that can cause it.

Also, take a look through this link. It explains how to retrieve diagnostic trouble codes on this model-year vehicle without a scan tool. Try doing this to see if there are any diagnostic codes that may point us in the right direction.

https://www.2carpros.com/articles/nissan-obd1-diagnostic-trouble-codes-and-retrieval-procedure-1984-to-1994

Let me know.

Joe
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Monday, December 18th, 2023 AT 8:17 PM

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