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Ok so I finally was able to check a few things on the car today. First I checked the codes, and code 51 was still present. I pressed the clutch and code 51 went away. Next with the clutch pressed in and the code 51 gone, I hit the A/C switch to see if 51 would reappear which it didn't. Then with...

Well I am new at all this but I will try to figure out how to check the three inputs and report back on my findings. Thanks JJ and 3p for your help thus far.

I was thinking the clutch start switch was gong bad also but I guess that's not the case. I am also trying to figure out how the CC could set off code 51, hopefully JJ will enlighten us with more useful information as he always does.

I have tested the tps 7 or 8 times lol and everything was in spec, but why would code 51 go away with the clutch pressed in?

No I do not have cruise control hooked up anymore, and the car has always been a 5spd. Thanks for the quick responses guys.

Hey guys I don't know if anyone knows the answer to this, but I have a code 51 when my foot is off the clutch. If I press the clutch while checking the codes it goes away until I take my foot off again. I have read a ton of threads on code 51 and they all talked about TPS, A/C, and NSW signal in...

Hey jetjock, I just thought I would throw this question up here to try to keep as much info as possible in this great thread. Now my question is, will the "NSW" signal that causes code 51 happen with both an auto and a 5 spd.? All the info I have read says the "NSW" is for automatics. The reason...

Hey guys, My name is Todd, I am from Gardiner, Maine. I have a 1990 Supra turbo. I just wanted to see if there is anyone else from Maine on here. I love these cars, and I want to find others around me that share the same passion. Let me know, Thanks, Todd

If your your timing is good with the jumper wire in, you have no stored codes, grounds are good, and you check/change your plugs, the next thing I would do is adjust the TPS per TSRM, if that doesn't fix it check the injector seals. The seals can dry and crack, or could have been installed wrong...

This shop sounds kinda shady, I would be hesitant to let them touch my car if they don't listen to my requests. Most shops dyno tune by the hour but $1000 sounds kinda high to me, but I think a lot of it depends on how good they are and how much business they have. There are a couple shops...

IMHO 10 is to low I wouldn't run it like that. I have mine right at 11.5 at full boost, IIRC running it that low and there is a chance of washing the cylinders, someone else may want to chime in on this.

Code 32 is AFM, test it per TSRM, check wiring to it. Code 34 is Turbo Pressure Signal, check AFM, and intercooler piping.

I am not sure but I think you can unplug the stock o2 sensor to force to open loop. Hopefully someone will confirm this is the way to do it. I was thinking about putting a switch inline of the o2 sensor so I could switch it from closed to open when ever I wanted but I just never got around to...

Have you figured this out?

Any updates Supraguy? I was wondering if you are getting them new or used and where you were able to find a set. Let us know how everything goes. Thanks for being the guinea pig lol.

I believe they should say PL8 0550 or PL9 0550 also I would suggest using an AFPR and a Walbro fuel pump before you boost to much with the lex AFM.

Awesome, let us know how they work out. If I had figured this out two weeks before I did I would have gave it a shot but I had already rewired for RC injectors. Good luck, I hope they work out for you.

Thanks, I did read all 19 pages of that before I made this thread but I didn't really get a straight answer from it. There were so many different ways people were saying it and it confused me more then anything lol. I wound up just adding it in with the stock setup and figured the diagram would...

Ok thanks for the reply, I will keeps the check valve out as my original plans didn't include one anyway. The reason I added it was so when in vacuum it wouldn't be pulling air from the accordion hose, but rather just the valve covers. I know the stock system doesn't use a "check valve," but it...

I suppose putting it between the valve covers and the throttle body would work to. When in vacuum it sucks the blow by into the throttle body, and under boost it pushes the blow by from the valve covers to the accordion hose, at least that's the way I understand it. I am pretty sure though that...