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Random cylinder misfire

Tiny
REDHOOK
  • MEMBER
  • 1997 MITSUBISHI MONTERO
  • 233,000 MILES
Random cylinder misfire
Thursday, March 7th, 2013 AT 7:40 PM

9 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
What is the codes?

Start with checking spark plugs

Roy
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Thursday, March 7th, 2013 AT 11:10 PM
Tiny
REDHOOK
  • MEMBER
  • 7 POSTS
One code p 0300 and I just got a tune up check engine light was gone for about a week and then came back had it check and that's the code that came up
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Thursday, March 7th, 2013 AT 11:16 PM
Tiny
ASEMASTER6371
  • MECHANIC
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Were the coils, wires checked?

Roy
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Thursday, March 7th, 2013 AT 11:20 PM
Tiny
REDHOOK
  • MEMBER
  • 7 POSTS
Dont think so but I will ask what should I do.? Tks for answering me
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Thursday, March 7th, 2013 AT 11:23 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
These items need to be checked as they may be arcing causing the missfires

Roy
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Thursday, March 7th, 2013 AT 11:29 PM
Tiny
REDHOOK
  • MEMBER
  • 7 POSTS
Tks will have that done tomorrow. Will update then
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Thursday, March 7th, 2013 AT 11:34 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
We will be here
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Thursday, March 7th, 2013 AT 11:35 PM
Tiny
IKE H
  • MEMBER
  • 3 POSTS
Having the same problem with 1997 Montero SR new plugs and wires swapped the ICM with known good one swapped coils with known good ones. No change.
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Friday, July 1st, 2022 AT 3:58 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,526 POSTS
This problem occurs when the fuel pump is weak or the MAP/MAF sensor is off. have you run the codes yet? Here is a guide to get us started and the location of the MAF and MAP sensors in the diagrams below so you can see what's going on:

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

I would try cleaning the MAF sensor to see what happens.

https://www.2carpros.com/articles/mass-air-flow-service

Check out the diagrams (below). Please let us know what happens.
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Monday, July 4th, 2022 AT 11:36 AM

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