Mitsubishi VR Problems

[Ward Spoonemore]

Nun 1, Check your fuel preesure and or fuel filters. 
Ward Spoonemore

-----Original Message-----
From: owner-diy_efi at efi332.eng.ohio-state.edu
[mailto:owner-diy_efi at efi332.eng.ohio-state.edu]On Behalf Of Ross Myers
Sent: Wednesday, January 20, 1999 12:06 AM
To: diy_efi at efi332.eng.ohio-state.edu
Subject: Re: Mitsubishi VR Problems




>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.

[][][]
[][][]

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