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I forgot to mention that when my car had the same problem the jerking ended up breaking my rear subframe. It was probably the most power my NA had. If you have another TPS by all means try it. I was lucky enough to find a rear subframe here in Kuwait at the junkyard at Amghara. Now there are 0...

The HTML code for the diagram you are using from Toyota-supra.info is wrong --->"16 9 Check Engine Light". (I can't find a 91 diagram to check 9) it should be 16 16 IGSW (It is 16 for both 87 and 90) You can see here on the 7M-GTE diagram...

No the check engine light is on the IG1 plug pin 19 to M1 pin 8.

I had a dead spot on my tps that caused that issue when I had a 7MGE.

Check the IACV for power and make sure the check vavle was put back in correctly. If the dome part of the check valve is positioned towards the iacv then it will idle low. For battery drain to a current draw test on the battery with a multi meter. Attachment is a 2JZ-GTE iacv but the check...

My first swap I had someone extend the harness at the ECU side and he did it too long and got one of the camshaft sensors wrong. Also had to replace the caps within 2 weeks of driving it. The engine and transmission was from a JZA70 half cut that I picked out in Los Angeles and found a shipper...

My previous 1JZ came from an early chaser and has a 2 row ECU.

Thanks for posting your fix for the the code 52. I wish more people would post how their car problems are resolved. I will probably get an O scope too just to have it, I haven't looked at prices and that one is very affordable. I was thinking they were in the hundreds of dollars. Just for...

I got them used from a 1JZ that was in the garage my car was in. the 2JZ one is the same, here is a compatibility listing for the part number. http://www.toyodiy.com/parts/xref?s=89615%E2%80%9122040&mU=on&mE=on&mJ=on&mG=on can probably easily find in a pick a part.

You should ohm out all the wires starting with the TPS, Map,AIT and CTS. The Tps and map share a common wire and the map iat and cts share a common ground in the ECU. Check the cam sensors and crank sensors also. I had one tooth off between the cam and crank and it missed badly under load so it...

I changed both of mine and got rid of the 52 code about 2 months ago. Try and change #1.

10 afr is not normal at cruise. Should in the 14 to high 15 range. Have you opened the ECU and checked for leaking caps? I would put the iacv back on too.

Check this page out, he explains what every pin does on the Soarer ECU. Scroll down to C86 for the AC signals. It doesn't have a pin for that specifically but it should be the ELS pin that should compensate for an increased electrical load...

I would call Doc Tweak and have him send a 3 wire plug that you can swap over or use a 7M after cat O2 sensor which is 4 wires.

An oil/water cooled turbo setup would contribute to an overheat condition on a track. Oil cooled only would put less stress on the coolant. Also thermal wrapping the exhaust manifold and downpipe would help underhood temps and also running the engine undercover if your running with it off.

Just get something like this and settle it. Also videos on youtube. Or cap isn't holding pressure. Check rubber ring on it. http://www.amazon.com/Lisle-75500-Combustion-Leak-Detector/dp/B0007ZDRUI

http://acronyms.thefreedictionary.com/CTS After looking at the long list it has been narrowed down to "Coolant temp sensor"

Did you do an end to end test on every wire from the ECU to the Components yet? looking for continuity, shorts to ground and shorts to other wires?

Freeze 12 MSDS here breaks it down. http://www.technicalchemical.com/msds/6030.pdf It is a combo of R134 and R142b so basically if you put it in an r12 system that uses mineral oil the oil will not flow with the R134 and your system will likely disintegrate.

I used a camry switch in that spot to run a pusher fan for my condensor through a relay.