Mitsubishi Montero:

Montero Sport

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# 1  1/9/2010 1:04 AM

phil
New member
Registered: 1/5/2010
Posts: 4

Montero Sport

1998  Montero  sport  3.0     replaced  brain   (ecu)  took  it  in  for  smog  check  ( says  not  ready)                       it  has  about  300  miles  on  replaced    brain     runs  great...     THANKS    PHIL

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# 2  1/9/2010 7:53 AM

TechHelp2
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Registered: 11/24/2009
Posts: 1299

Re: Montero Sport

You first need to scan the computer to see if there is a trouble code stored in the memory.

Clear all codes and drive the vehicle for about 50 miles.

You said the vehicle runs good. As long as no other trouble codes come up it should clear up you problem.


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# 3  1/11/2010 6:56 PM

phil
New member
Registered: 1/5/2010
Posts: 4

Re: Montero Sport

THANKS  for  your  reply  ...This  is  a  rebuilt  ecm  Did  what  you  said  & no  change .   The  smog  print  out  reads  on  Continuous  Monitors      ready .   On  non- continuous  monitors  not  ready  is  catalyst , evaporative  system , oxygen  sensor , oxygen  sensor  heater , others  read  not  supported ....   THANKS

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# 4  1/11/2010 9:44 PM

TechHelp2
Administrator
Registered: 11/24/2009
Posts: 1299

Re: Montero Sport

Are you getting this readout from a state inspection or from a scanner print out.

Did the vehicle fail the state inspection or is this readout coming from a repair shop.

If you are having a state inspection or smog test, what state are you having it done.

What was the reason the computer was replaced.
   
The most common reason a computer is not ready is a bad oxygen sensor.

When you scan the computer look to see if it is in open or closed loop?

If the oxygen sensor heater is bad it will stay in open loop telling the computer it is not ready.

If the motor runs for two minutes or more and it stays in open loop it will probably be a bad oxygen sensor.

If you can follow up with more detailed information we can help you better.

Last edited by TechHelp2 (1/12/2010 1:19 AM)


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