[iachella]

So I've been combing through Craigs docs and am still not sure of what a couple of plugs are in my TS75 engine are. It's been installed for a year now and running for 9 months.

Near the ECU are three pigtails. One is the fuel quality plug, which I know. The other two are a three wire plug, and a 4 wire plug (with more than 4 wires going to it).

The three wire plug is capped off and has a Blue/Grey, a Black, and a White/Red wire going to it.

The 4 plug has the Blue/Grey and Black from above snaking back into it, and in addition it has a Blue/Yellow (crimpped to the Blue/Grey, another Black, a Blue/Red, and a Pink.

I took some cell phone photos of them:

Any info appreciated.

 

[giuliettaevo]

first and second picture are for diagnosis purposes... On one of them you can connect a light and read out flash-codes from the ecu somehow.

Third picture is the relais used for fuelquality... removeing it will make it neccessary to put RON 98 fuel in yuor car but it will run a lot better then! it disconnect the lambda probe without actually disconnecting it ( stops using its input).

 

[iachella]

Thanks for the clarification. I suspected they were for diagnostics, but wasn't sure there were two for diagnostics. I thought only one was for diagnostics.

I was aware of the fuel quality plug, but we don't have 98 octane gas where I live. I have another thread going on to try to have someone explain to me what the ECU does with the different plugs. If you know more about that, please check out the end of this thread and see what I'm asking.

http://www.alfabb.com/bb/forums/eng...her-ts-conversion-information.html#post466995

Thanks

 

[Bruce Colby]

I have a couple things. First, the fuel "relay" isn't a relay at all. It looks like a relay but inside there are just two sets of jumpers, one for whether or not you are using the O2 sensor (open loop/closed loop) and one for high/low octane fuel. I have used the high octane setting with the stock TS in my street car for 20k+ miles with no problem. I also run open loop (no O2 sensor).

Second, I've attached an image of the wiring harness complete with labels for the connectors. Image quality isn't great and the labels are in French (I found it on a French website) but it's better than nothing. You can use an on-line translator if you need help with the French.

 

[iachella]

Thanks Bruce - that also confirms the two unused plugs are for diagnositcs. I can now officially ignore them.

I know about the fuel quality plug, but in the thread I referrenced above (not mine but it shifted over to the fuel plug description, so I'm continuing it that way), I'm asking what the ECU is actually doing with regards to fuel maps if different plugs are used.

Are you running a cat? Are you the guy that was going to bring his TS to the referree in California to get a new emmisions decal issued and have a legitimate and legal conversion? I need to run a cat as my car is a 1979 but I will not go near a referree with a foreign market engine. I'm pretty sure that would be suicide, but would like to hear what became of that plan.

 

[Bruce Colby]

Thanks Bruce - that also confirms the two unused plugs are for diagnositcs. I can now officially ignore them.

I know about the fuel quality plug, but in the thread I referrenced above (not mine but it shifted over to the fuel plug description, so I'm continuing it that way), I'm asking what the ECU is actually doing with regards to fuel maps if different plugs are used.

Are you running a cat? Are you the guy that was going to bring his TS to the referree in California to get a new emmisions decal issued and have a legitimate and legal conversion? I need to run a cat as my car is a 1979 but I will not go near a referree with a foreign market engine. I'm pretty sure that would be suicide, but would like to hear what became of that plan.

I'm not running a cat and I'm not using an O2 sensor. Running a cat without an O2 sensor hooked up would probably ruin the cat fairly quickly.