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If you hook the leads up backwards it will be negitive. Ecu will not turn on if the igsw doesn't give it a signal. How are you checking the fuses? By looking at then or with a volt meter?

Ya. Also b+ and b+1 are the same wire and should have identical voltages. http://www.cygnusx1.net/supra/Library/TEWD/MK3/manual.aspx?S=Main&P=49

Are those voltage with the key on? I would double check all your fuses. Igsw should have 12v with key on.

35 at idle? Should be between 10-18 at idle.

is the speedy sleeve the metal ring that slide over it to make a new surface? unless there was a huge grove i would avoid those. the seal was falling apart because it rubber and it was old and brittle. perfectly normal for a seal that is 20+ years old and seen well over 100k. You would...

The coolant reservour placement doesnt have an effect on the cooling system.

Parts are the same. You would want to use a supra tho. gs never came turbo out here. also dm carries everything.

It seems to me that your lines were mixed up. prolly just need to swap them around. a pic or something of how you hooked it up would help.

http://www.cygnusx1.net/supra/Library/TSRM/MK3/manual.aspx?S=BE&P=42 It would need a bulb on it and then it would peg. Prolly something similar to a test light.

http://www.cygnusx1.net/supra/Library/TSRM/MK3/manual.aspx?S=BE&P=41 You can check the sensor.

Could be. That wire take a lot of abuse. Also could be the gauge.

ca use the 2jz one. is almost the same. the codes are the same as 7m for the most part. http://www.supracentral.com/foundation/mkiv-tsrm/

the steering shouldnt be siezed. you loosen the nuts and then turn it. If its ahrd you can soak it in penetrating oil. Usually the front lower control arm bolts sieze which would require cutting the bolts out and replacing them and the bushings while in there. for the rear best bet is to get...

Raise the rpm to 3k. It should go. Stock gauge at idle is going to be around 0 or a little above. They vary a bit. And you won't get a reading until the engine has pressure. If you ground the wire the gauge should be pegged.

Its prolly grease from the head job. unless your losing oil or coolant i would just drive it so it can burn off. oil burns white as well.

Its prolly grease from the head job. unless your losing oil or coolant i would just drive it so it can burn off. oil burns white as well.

Did you rpelace the coils with new or used? black around the ring is normal and good. if the whole plug is black then there fouled out. all the turbo motors run rich in boost for safety reasons with the stock ecu. try checking for stored codes.

For just a blown head gasket i would just fix that with oem. Should be about 2k total +/- a couple hundred. mhg will require full rebuild

I would change the oil before anything and then crank it with efi fuse pulled for 30sec on and off to let starter cool for a few min. be good idea to flush the coolant out as well, but the coolant is just a passage way in the turbo. doesnt touh and moving parts.

Could start by checking the relay. It's on the passenger side fender. http://www.cygnusx1.net/supra/Library/TEWD/MK3/manual.aspx?S=Main&P=014