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Open up the computer case and take a look at the circuit board. Most likely cause is a dead capacitor. Look at the capacitors, little black cylinder things. Check for any stuff leaking out of them, or the tops bulging. Give them the slightest push to ensure that their legs haven't corroded...

defiantly sounds electrical, Check your relays, if you've got a relay that get a little hot then gives it up that might be the issue. Check engine codes, might tell you something. It could be the wire running to the tacho, if the computer thinks the engines not turning over then it will...

For mine, I used a corona slave and a corolla master, then tested various pivot points for the fork. Works a charm now.

Hey Guys, Have fixed the problem! It was the exhaust cam, I did not realize that it had a tensioner gear. I had put a mark on the tensioner gear and lined it up to that when i put it back in. Car runs great now, thank you all for your help

yeah the good ol' hardwire method for fans. it is an easy way to fix and ignore the problem.

All right have done compression test, i got all pistons between 180-200psi. Reading on what other people have that seems like its all ok. Next I will check the timing positions of everything, if i can i will also post some pictures to get you guys to visually check as well. Thanks

check the hydraulic system for leaks, and check theres is fluid in it. Use a multimeter to see if the voltage changes across the solenoid when the air-con is switched on. If that fails, then find the cooling fan ecu (somewhere in the dash) and check its got connection to the climate...

I swapped spark plug leads across to from the working bank to the rough bank. Still the same problem, so that rules them out. Compression gauge is on its way, so i will test that. Just to ensure my timing is right, i will pull the rocker cover off and check again. Does anyone know how...

Still waiting on a compression gauge so i havent done a comp test yet, if it was only one valve stuck open wouldnt that only effect one cylinder?

I have taken out the spark plugs and visually checked for spark, it looks fine. I did have to bend the leads around a fair bit to do engine work so it may be possible that I damaged them. I will swap one over on the weekend. My rotor caps look fine, and if it was a damaged rotor it would...

I have checked the timing twice on the inlet and exhaust gears, if there is another way to check other than lining up the marks please tell me. I have tested spark on every cylinder by pulling out a plug and visually checking. i have also checked spark timing using a timing light i have...

swapped coils over to see if there was a difference and there is no change. its not 2 on each side, its one bank. Im struggling to think of all the things that can effect only one bank. Spark is fine, and spark timing is fine. Injectors are fine, although it smells like its running rich on...

It was only one shim I did, I am borrowing a compression gauge to test that cylinder. It is the entire bank that is causing the trouble, not just one cyclinder

Hey All, Long time reader first time poster. I need some help in working out what is wrong with my 1uz. I have a ma70 supra with a 1uz that my father and I made about two years ago. Car has run brilliantly for the last two years but now its not going so well. I did a timing belt change...