Extreme Terrain
4x4Wire Trail Talk Forums: Jeep, Toyota, Mitsubishi, Pajero, Isuzu, Kia, 4WD, 4x4, SUV, Off-Road and OutdoorWire Forums


Recent Posts on TrailTalk
Florida Mitsubishi 4X4 Fall Crawl 2022
by Mudraider - 05/16/22 04:50 PM
OG folks chime in!
by OldColt - 05/10/22 10:55 PM
RPM's fluctuate when turn signals/lights are on.
by Mudraider - 05/08/22 01:17 AM
the cold start shuffle got me
by Mudraider - 05/03/22 07:20 PM
'88 Raider maintenance and modifications
by Mudraider - 05/03/22 07:16 PM
FS: 500,000 mile 2003 Toyota Sequoia SR5 4X4
by atikovi - 04/29/22 03:56 AM
Support 4x4Wire
New Topics on TrailTalk
Florida Mitsubishi 4X4 Fall Crawl 2022
by Mudraider - 05/16/22 04:50 PM
RPM's fluctuate when turn signals/lights are on.
by LarryJo - 04/30/22 04:40 PM
FS: 500,000 mile 2003 Toyota Sequoia SR5 4X4
by atikovi - 04/29/22 03:56 AM
Check Engine Light Throttle Position Sensor:
by nvmonty - 04/28/22 04:34 AM
Steering link question
by Colombia - 04/18/22 10:31 PM
the cold start shuffle got me
by keetz - 04/12/22 01:32 AM
4x4 Gallery
Photos of rig
99 Monterrible Sport
Scar the Cylon Raider
Mercenary Sergeant: Code Name "Sapphire"
More News on the 'Wire

Who's Online Now
0 registered members (), 69 guests, and 6 spiders.
Key: Admin, Global Mod, Mod
Forum Statistics
Most Online907
Dec 28th, 2019
Active Threads | Active Posts | Unanswered Today | Since Yesterday | This Week
Mitsubishi 4x4 and SUV Tech Jump to new posts
Re: High Idle after ECU reset - Dropped Idle after engine warm, and stays low Lovine 05/20/22 08:13 AM
Originally Posted by Mudraider
The winter is not a great time for it, but an FIAV Delete will probly solve the issue.

I actually tried purchasing those fancy FIAV delete plates, but my throttle body looks different:
[Linked Image from i.imgur.com]
I ended up sealing one of the FIAV ports with JB-Weld instead, and keeping the ISC port open. I was really hoping that would be the end of it, but it looks like the ISC is not cooperating for some reason.

Originally Posted by OldColt
The idle speed control is a stepper motor. If plugging the passage lowers the speed either the stepper motor has failed or the drivers on the circuit board in the ECU are bad.

So since my last posting, I had the throttle body rebuilt (TPS and ISC tested to spec), and the ECU checked out by an ECU shop (they could not find any problems). My idle is still high ~2800 with temp gauge in the middle after all this high idling. Before I shut off the engine, I unplugged the ISC harness to "capture" the state of the ISC, shut off the engine, removed the ISC and saw the pintle is not extended at all, as if the engine was cold. So it's either the stepper motor isn't working right (but specced OK??), or the engine thinks it's cold?? The ISC vibrates when the key is switched on (also the harness to the ECU tested around 0.1 ohm resistance for all wires, so it looks like the ECU can talk to the ISC no problem).

[Linked Image from i.imgur.com]
Old Bad ISC, manually extended

[Linked Image from i.imgur.com]
New tested-good ISC, unplugged harness while warm engine running

Tomorrow I am planning to install the old ISC (manually extended) into the throttle body, and connect the harness to the tested-good ISC motor hanging free outside the throttle body, so I can see if it does anything at all when I rev the engine.

Not sure what else this could be, I am thinking maybe test with a known good ECU would be the last final step?
9 6,958 Read More
Mitsubishi 4x4 and SUV Tech Jump to new posts
Florida Mitsubishi 4X4 Fall Crawl 2022 Mudraider 05/16/22 04:50 PM
Hmm. This might be like our 10th annual event. Regardless.. This year it will be November 11-13. Gates open to set up camp at The F. I. R. M. in Starke, but no wheeling on Friday.. Saturday's opening ceremony happens at 0900hrs. For ticket prices, go to Krawl'n for the Fallen website, we will once again be piggybacking on this event to have access to this venue.
0 150 Read More

4x4Wire Social:

| 4x4Wire on FaceBook |

OutdoorWire, 4x4Wire, JeepWire, TrailTalk, MUIRNet-News, and 4x4Voice are all trademarks and publications of OutdoorWire, Inc. and MUIRNet Consulting.
Copyright (c) 1999-2019 OutdoorWire, Inc and MUIRNet Consulting - All Rights Reserved, no part of this publication may be reproduced in any form without express written permission
You may link freely to this site, but no further use is allowed without the express written permission of the owner of this material.
All corporate trademarks are the property of their respective owners.

Powered by UBB.threads™ PHP Forum Software 7.7.3
(Release build 20190728)
PHP: 7.4.29 Page Time: 0.011s Queries: 6 (0.005s) Memory: 2.3945 MB (Peak: 2.5075 MB) Data Comp: Off Server Time: 2022-05-20 18:05:57 UTC
Valid HTML 5 and Valid CSS