Hey guys, I did a mini me but I'm stumped on two plugs, one is on the throttle body of the intake manifold. it has three pins, it sits on the top, and I dont know what is supposed to be plugged into it



There is a plug resembling it right behind it as well, facing the firewall, which only adds to my confusion. Do you guys know what plugs into it?

This other plug, it used to go on the stock A6 manifold over on the runner, you can see it plugged into the side in this picture


Here is the plug in a close up, and where it rests right now, since the Y8 manifold doesnt have that plug on the side of it like the A6. Do you guys know where it goes?




Any help, knowledge, theories would be appreciated. Thanks

 

the one on the throttlebody is a map sensor....im assuming your using the stock map sensor on the firewall. you can use the one on the throttlebody by extending the wiring if you want.

the other plug is for the iat sensor. the a6 manifold has the iat in the runner...the y8 has the iat in the intake piping before the throttlebody.

 

the first plug is your MAP sensor. just figure out where your old MAP sensor was on the A6, extend those wires and plug into the MAP on top of the throttle body.

don't know about the other sensor.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Braco11 &raquo;</TD></TR><TR><TD CLASS="quote">the first plug is your MAP sensor. just figure out where your old MAP sensor was on the A6, extend those wires and plug into the MAP on top of the throttle body.

don't know about the other sensor.</TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fastcrxsi90 &raquo;</TD></TR><TR><TD CLASS="quote">the one on the throttlebody is a map sensor....im assuming your using the stock map sensor on the firewall. you can use the one on the throttlebody by extending the wiring if you want.

the other plug is for the iat sensor. the a6 manifold has the iat in the runner...the y8 has the iat in the intake piping before the throttlebody.</TD></TR></TABLE>

So on your first sentence, I'm a bit confused, does the car have a map sensor placed on the firewall, and on that throttle body, that MAP senson is just there, and I dont have to plug anything into it? Here's a picture I just took, the blue line indicates the harness and where it's coming from, it has two other wires splicing off it that lead to the distributor. The red circle is where I HAD the plug plugged into, and where I put it now, was I supposed to leave it where it was?


Then for the IAT sensor, if I'm gonna run an aftermarket intake, and obd1, do I still need to plug that sensor into something, or can I just leave it hanging? Will it cause problems?

 

the connector that you have plugged into the MAP on the throttle body is the connector for the TPS which is on the back side of the throttle body - your MAP is on the firewall - the wiring for it is not part of the engine harness - it comes thru the firewall right to the MAP - use the one on the throttle body - if the connector won't reach, you can add a short piece of wire to the 3 wires - if you don't use the IAT you will get Check Engine Light and code 10

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Maldito X &raquo;</TD></TR><TR><TD CLASS="quote">The red circle is where I HAD the plug plugged into, and where I put it now, was I supposed to leave it where it was?

</TD></TR></TABLE>
yes, plug that harness into the TPS sensor (on the firewall side of the throttlebody). leave the MAP sensor (on the top of the throttlebody unconnected)...you already have a MAP sensor on the firewall as shown in the pic from jlicrx.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Maldito X &raquo;</TD></TR><TR><TD CLASS="quote">Then for the IAT sensor, if I'm gonna run an aftermarket intake, and obd1, do I still need to plug that sensor into something, or can I just leave it hanging? Will it cause problems? </TD></TR></TABLE>

for now just plug the IAT sensor from your a6 manifold into the harness and let it hang. you will need to put the IAT into the intake piping or coupling or y8 manifold eventually though.

this may help a little...http://www.geocities.com/joeyp....html

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jlicrx &raquo;</TD></TR><TR><TD CLASS="quote">the connector that you have plugged into the MAP on the throttle body is the connector for the TPS which is on the back side of the throttle body - your MAP is on the firewall - the wiring for it is not part of the engine harness - it comes thru the firewall right to the MAP - use the one on the throttle body - if the connector won't reach, you can add a short piece of wire to the 3 wires - if you don't use the IAT you will get Check Engine Light and code 10

</TD></TR></TABLE>

Ok, so I went ahead and put the MAP sensor plug onto the one on the throttle body, I was supposed to do that right? I also went ahead and put other plug back where I had it originally



<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fastcrxsi90 &raquo;</TD></TR><TR><TD CLASS="quote">
yes, plug that harness into the TPS sensor (on the firewall side of the throttlebody). leave the MAP sensor (on the top of the throttlebody unconnected)...you already have a MAP sensor on the firewall as shown in the pic from jlicrx.


for now just plug the IAT sensor from your a6 manifold into the harness and let it hang. you will need to put the IAT into the intake piping or coupling or y8 manifold eventually though.

this may help a little...http://www.geocities.com/joeyp....html </TD></TR></TABLE>

Ok, so I was supposed to leave it on the firewall, or not? Or perhaps it doesnt matter? lol

I'll read that link you gave me, thank you. I'll also go ahead and remove the sensor from the A6 and plug it onto the harness, it looks like it's just two screws holding it there

 

i would use the map sensor on the firewall...and run the vacuum line to a port on the manifold. just like the stock a6 manifold.

if you use the map sensor on the throttlebody you dont need to run a vacuum line, you'll also want to extend the wiring alot more...if you leave it tight like that you rip stuff apart with any engine vibration.

you are correct on the iat sensor...just plug it in and let it hang for now. i have an obd2 iat sensor (only difference is physical shape) that is in my charge piping.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fastcrxsi90 &raquo;</TD></TR><TR><TD CLASS="quote">i would use the map sensor on the firewall...and run the vacuum line to a port on the manifold. just like the stock a6 manifold.

if you use the map sensor on the throttlebody you dont need to run a vacuum line, you'll also want to extend the wiring alot more...if you leave it tight like that you rip stuff apart with any engine vibration.

you are correct on the iat sensor...just plug it in and let it hang for now. i have an obd2 iat sensor (only difference is physical shape) that is in my charge piping.</TD></TR></TABLE>

Ok, so it's alright to leave the map wires plugged into the sensor on the firewall, I just have to run a vacuum line to the manifold to avoid any problems? I'd rather leave it where it was for sure.

I was trying to remove the IAT sensor, but it's easier said than done, I might take a dremel and cut off the screws, because I'm stripping them with the phillips screwdriver

 

The link you gave me says that if the TB I use doesnt have a MAP sensor on it, to just use the one on the firewall and run a vacuum line to the TB or whatever, but if it does have a sensor on it, to lenghten the harness and plug it on the TB instead. I guess I can try leaving it on the firewall first, and if it doesnt work, then I'll either pick up a B18A1 TB, or lengthen the harness

 

Have you guys ever tried using the D16A6 TB with the Y8 manifold? I'm going to try it out, although I dont know if it's a bolt on thing, the link I'm reading says it only accepts TBs from 92-and up, I may be screwed, but I thought I'd check anyways.

Edit: Update, the TB doesnt fit, the bolts dont line up. I'm going to try and remove the MAP sensor from the TB of the Y8, and put the nipple that the A6 TB has onto the Y8 TB, where the Sensor was...does that make sense? lol. Then I'll just run a vacuum line to it, and everything should work out, if I cant get the Sensor off though, I'll just extend the wiring. That's all I want to avoid.


Modified by Maldito X at 4:00 PM 10/25/2007

 

where are you located?

 

Utah

 

if you were closer i would come out and help out... where are you stuck so far?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by akandok &raquo;</TD></TR><TR><TD CLASS="quote">if you were closer i would come out and help out... where are you stuck so far?</TD></TR></TABLE>

I'm just going to cut the 3 MAP wires and extend them, because i wasnt able to remove the vacuum nipple from the A6 TB, the only other thing I'm unsure of, is how do I cancel out the FITV, it says unplug from the harness, so I'm wondering if I have to go straight to the ECU plugs and remove from there?

 

just leave the extra map sensor on the TB and leave it unplugged...it wont hurt anything.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fastcrxsi90 &raquo;</TD></TR><TR><TD CLASS="quote">just leave the extra map sensor on the TB and leave it unplugged...it wont hurt anything.</TD></TR></TABLE> I am not sure about that, before I had a real bad idle problem with using the stock firewall mounted MAP and had the other plugged. When I used the TB MAP it fixed it, but maybe my TB map was not completely covered prior.

 

Where are you running the vacuum line from the firewall's map sensor? I'm not sure where to run mine to, or if it matters. That's why I figured I'd extend the wires, or I'll end up with a bad idle too if I don't have a vacuum etc from the firewall map