My tt swap and the problems it came with.

[mudvaynedude122]

Hey, i recently did a tt swap, i drove it today for the first time and im pretty sure im burning coolant. Here is my thread on 3si, im posting it here because it seems like all the knowledgable memebers arent really on 3si anymore.

http://www.3si.org/forum/showthread.php?t=388071&page=3

I just wanna know if you guys confrim that it would be a head gasket related problem. thanks

[jackhammer]

That link talks about a clutch, not a coolant leak

[Hans_GZP]

Do a compression and leak down test and that will tell you what it is. No need to guess at it.

[mudvaynedude122]

[quote=""jackhammer""]That link talks about a clutch, not a coolant leak[/quote]

sorry, its on that thread but the last page.

[J-Groove]

You say your fans still aren't coming on. DO you have a datalogger? Do you know how hot your car is getting?

Our cars get really hot really fast if your fans aren't running. For example when my fans killed off on me I went from 180 to 250 in a matter of seconds.

You could be burning coolant just from shear heat.

-John

[mudvaynedude122]

[quote=""J-Groove""]You say your fans still aren't coming on. DO you have a datalogger? Do you know how hot your car is getting?

Our cars get really hot really fast if your fans aren't running. For example when my fans killed off on me I went from 180 to 250 in a matter of seconds.

You could be burning coolant just from shear heat.

-John[/quote]

I have a water temp gauge hooked up. The highest my temp got was 230 and i pulled over immidately and let it cool down. Then refilled it when i got home. I was hoping that it just evaportated but that doesnt explain the puffs of white smoke coming out of my exhaust.

[mudvaynedude122]

I have not messed with my car to much till today. It is running extremly rich, gas is pouring out of the exhaust, i went through $20 of gas in about 20 minutes of driving. I got my datalogger working today and these are the graphs i got.





I also got error code 41: injector circuit. so i turned off each injector one at a time and the rpms dropped for each one except for injector number 4. I swaped injector 4 with 3 and its still 4 that has the problem. So its got to be wiring related or ecu related. I then checked the resistors that i soldered in for the injectors and found that the resistor for injector 4 was burnt and all the electrical tape was shriveled up. I cut out the resistor and started the car with the wire cut. Gas was still pouring out of the exhaust. at that point i gave up. I am assuming my smoking issue was coming from running to rich. I ordered another resistor to replace the burnt one but I dont know if that will fix my problem. Any ideas??

[SAgosto]

Sounds like that car is fucked. I would not drive it with that tune. You're cylinder washing and your bearings are crying.

[mudvaynedude122]

[quote=""Shawn96VR-4""]Sounds like that car is fucked. I would not drive it with that tune. You're cylinder washing and your bearings are crying.[/quote]

I dont drive it at all. I know its fucked right now, but im trying to get a solution cause i would like to drive it someday.

[Jeremy C]

Since you wired resistors in, I assume you hacked an NA harness to work with the TT ECU. Why not just buy the proper harness? So much less issues that way. Also, what changes have you done to your fuel system?

[mudvaynedude122]

[quote=""Jeremy C""]Since you wired resistors in, I assume you hacked an NA harness to work with the TT ECU. Why not just buy the proper harness? So much less issues that way. Also, what changes have you done to your fuel system?[/quote]

Somone convinced me that the na harness is just a less complicated 1st gen tt harness, except u have to wire in resistors and everything hooked up fine so i really didnt have a problem with it till this thing.

[SAgosto]

[quote=""mudvaynedude122""]Somone convinced me that the na harness is just a less complicated 1st gen tt harness, except u have to wire in resistors and everything hooked up fine so i really didnt have a problem with it till this thing.[/quote]

Get the real harness. Not worth the hassle. Bad shit can happen when you start f'ing around with that.

[Jeremy C]

[quote=""mudvaynedude122""]Somone convinced me that the na harness is just a less complicated 1st gen tt harness, except u have to wire in resistors and everything hooked up fine so i really didnt have a problem with it till this thing.[/quote]

Whoever convinced you of that is a) cheap and b) stupid. The TT harness took 30 minutes to swap in, and everything was a breeze. I've had absolutely no issues with my swap besides the the problems that I create myself (IE: forgetting to bypass the fuel resistor relay on the TT harness when I installed it). You have serious fuel issues, and I would be that they come back to the harness and your fuel control. What do you have for your complete fuel system?

[jackhammer]

[quote=""Jeremy C""]Whoever convinced you of that is a) cheap and b) stupid.[/quote]Theres a lot of that going around when it comes to TT conversions. Seems like the only people who dont run into problems are the ones who dont modify NA stuff to save a buck

[J-Groove]

The '94-'95 N/A harness can be used and used well.

The problem is a lot of people think it is just plug and play. It is far from it. When I learned this I purchased a 1st gen TT harness. When I got it in I found out that the harness was jacked up and in un usable condition. Hence how I got my box of wires.

All that said, if you take a '94-'95 N/A harness. Wire in both O2 sensors, add fuel resisters, add in a stand along fan controller, and cut a couple of unusable wires going into the ECU it will work perfectly. But it is not plug and play.

-John

[SAgosto]

There's a direct correlation with younger people who do this type of shit. Recent GT42R car was on a dyno didn't want to pay to fix a huge oil leak coming out of the oil pan. They told him he couldn't dyno and then he fixed it. WTP

[mudvaynedude122]

Well it has nothing to do with me being cheap, i have a first gen harness sitting in my room that i could have used. But a guy in fl3s convinced me that they are basically the same, he said he cut open his tt harness and got rid of all the extra wires that he didnt need, and ended up with basically a 94-95 na harness.

I have done everything to my harness that i needed to, put in the fan controller, soldered in resistors, i did not wire in a second 02 as the jdm engines only use one 02 sensor.

But i will try my other hanress if you guys think it will fix my problems. My fuel setup is complelty stock, stock ecu, stock 360cc injectors, no safc, stock fuel pump(not hotwired)

[mudvaynedude122]

buuump if anyone else has any ideas.

[vr4]

whoever told you that was an idiot.


use a proper TT harness. how does a 94/95 NA = TT? no EGR, no BCS, no FPR solenoid, 1 o2 sensor......

[mudvaynedude122]

I took apart my ecu today. The bigger capacitor in between the 2 standing up boards leaked. So i guess i have to send my ecu out to be fixed.