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Yes the sensor runs in the back of the dash and also compares with abs sensors as well. At a certain ratio it should be something like 4 speed sensor revolutions to every one wheel revolution or vise versa, I always forget.

Only code coming up is 24 - VSS I have only a basic understanding on these ECU's. Is there somewhere I can look for Sensor values and check on the ecu? like TPS voltage etc. Or does anybody have a good understanding as to other reasons it can run a limp mode?

Thanks guys. Yeah sorry, I'll double check the flash codes but I'm certain the code I looked up was a speed sensor fault, not sure on the flash number but I'll check again tomorrow

No other codes noted

I think its 21? Speed sensor fault. Old school flash codes

Thanks guys, sorry I'm a bit late on this one. Looks like I'm stuck with flash codes *sigh*

Hey guys, i'm chasing a speed sensor issue. Since i've changed my gearbox from GSR to Evo3 my speedo is now reading incorrectly, as expected. What I didn't expect was that it would also throw a Speedo sensor (I didn't even know they had speed sensors until I looked) and secondly, that said speed...

Hey guys, cheers for the help. From what I can determine, the 4 pin ports aren't compatible with mmcd. I'm sure I could modify it to suit but probably not worth it as a haltech is on it's way to me soon. From what I've learnt, the flashing diagnostic route has given me a fair understanding...

Yes that's correct. I have that exact plug (same 4 terminals) but no others that I can see around that same area

Just curious if anybody has a diagram of the diagnostic port on early Evo's. Or also if anyone knows through an engine conversion from 1.8t to 2.0t if such wiring would be changed or modified in the swapping of engines. To explain, I'm trying to get the PDA cable from meek and run the MMCD...

Factory ecu (reflashed) injectors are 1000cc big fuel pump. Cams and head work also.

The annoying part is that it is tuned. Richest I would normally see under HEAVY load was only 12.5-13:1 I have an external reg, could possibly try it but I have a feeling there is something electrical going on for a start. I'll update when I get more info. Just in case anybody runs into these...

This was my thought also. Idles rough but at lambda 1. It had a coolant fan switch issue before. When I resolved the issue, it didn't take into effect until I reset the ecu (remove battery terminals for 30+ mins)

And sorry khubner1. I misread your post. I'll have a better look. Didn't manage to get my head under properly. Will have a look behind the bonnet release this time

Only diagnostic port I can see is the old school mitsubishi type. Its only running 4 actual wires to it. I probably should have mentioned it's a Evo 3 setup in a gsr. It will normally idle 13-15:1 Under load I'll be going as far as 10:1

No it's currently running. not the best though. Wideband reads too rich under load while idle is normally ok. I do have a dead spot in my TPS but with no onboard diagnostics I'm getting tired of checking resistance values haha

haha the reason for all this madness is basically no CEL. I'm trying to see what information I can get from the ECU, if it is ECM link or similar style, I should have something at work that can read any diagnostic ports. The 12pin style that comes from factory is not helping me here. have tried...

Hey guys, I've had a quick look through the forums for this but haven't found anything as yet. I hate going into jobs Blind so I thought I'd ask. Steps to access the ecu for removal. I'm guessing the blower assembly needs to be removed. Anything further from there would be great! Also a side...

And everything is gone. Thanks everybody

Haha yes. Diff is now sold. Transfer remains. If anybody is interested, $100