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1990 Mitsubishi Montero idle control

Tiny
COOLMASTER
  • MEMBER
  • 1990 MITSUBISHI MONTERO
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 250,000 MILES
Ok my montero has a problem with rpm, when I start the motor the choke run good the problem is when the choke turn off the rpm go up 1500 rpm for 2 seconds and then go to 900 always in parking or neutral, when I put on D on the transmition the rpm are in 1000 and runs good, I did the timing with the computer jumper in ground
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Sunday, March 30th, 2008 AT 1:34 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Is it a Carb or an EFI fuel system?

You probably have a sticking throttle plate/kinked acc. Cable or a problem with idle air control valve/motor and the throttle position sensor-
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Monday, March 31st, 2008 AT 6:33 AM

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