Mitsubishi VR Problems

[Ross Myers]

>Hi
>
>I have 1997 Mitsubishi VR (4-cyl, 4G63 Injection Engine) that might have a
>problem.
>After a long time of driving(approx 3-4 Hours) there is some problem
>in the engine that the RPM is choppy (like run out of gas) when a normal
>driving and this is not always happen, just sometimes occur. I dont know
>what is happening at the engine. What is a general solution for this
symptom?
>and which part should be inspection for checking.
>
>Thank you
>

Check the resistance of the stepper motor used for idle (near the throttle
body), it's a 6 pin plug, remove it, and measure across the outside top
pins.

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You should get about 70 Ohms, same for the bottom row. If any of these are
open replace the stepper (This is a VERY common fault with Mits). Even
better when the stepper goes short and takes the ECM out with it!!.

HTH

Ross Myers