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Re: 1994 Supra Turbo - electrical problem when weather...
Is it only when you first start it up, and then it clears up? Is this in the rain? What weather affects it? My 300ZX TT had problems like that in the rain sometimes when I first started it up. What I figured was that I was getting too much moisture on the mass air sensor and it was causing it to tell the ECU to fuel the engine incorrectly. Being a hot-wire MAF sensor, once it heated up and burned off the condensation, the fueling was controlled properly and I did not have the problem anymore. I don't recall offhand if the Supra also uses a MAF sensor or a MAP sensor to determine airflow though. Post up some more info, especially some details on when you notice the problem (weather-wise, as well as if the engine is cold or hot, etc) and we can try to go from there.
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st tjis point you will have to test all the sensors through their range , it does sound like the ecm is shutting down, i have seen the airflow sensor cause such a problem and its been a while , also the tps and the iac controller, don't give up you'll find it
Yes. However it is a very expensive swap $5000 to $8000 to do it right. You will need the 1J or 2J engine, transmission, wiring harness, ecu, and alot of other pieces to do the swap. The engine brackets will need to be modified and you will have to upgrade your brakes. This kind of swap requires a good knowledge of the Toyota Supra and the engines. I do not recommend this swap for a beginner. A cheaper way is to take a 7M-GTE and upgrade the internals and turbo.
the chances are you have done the shell bearings on the cranck shat in or the big ends if it is a loud knocking noise or possibly the turbo (is their any smoke from engine bluey in colour if this is so engine has been damaged it could also be the camshaft too without hearing it it could be anything )hope i have helped you
it may be fuel pump ? how much fuel is in the tank ? these trucks are famous for their fuel pumps overheating when the fuel level gets below half or sometimes evem a quarter tank. if the fuel tank is full you may want consider replaceing the fuel filter (as a good routine maitenance procedure)and see what happens then.
The intake valve guide seals are worn and are letting oil slip by under high engine vacuum--as when you let up on the gas. The only fix is to take the cylinder head off and replace the valve guide seals. This problem is pretty normal for an older car with high mileage. It will probably run just fine. Just keep checking the oil level and keep it topped up.
Hi, sounds like you need to replace your valve seals or if yours is the turbo the sealing rings in the turbo are worn.
What happens is that oil over night or when the engine is stopped runs into the intake of the engine in small amounts then when the engine is started the oil is burnt hence white smoke.
Check each spark plug in each cyclinder to see is one of them or all of them charred with black burnt oil deposits.
In one plug has more than the rest you can be rest asured it is the valve seals.
If it is the turbo version it has to be the turbo sealing rings.
Best to replace the turbo in this case as it is only a mater of time before it goes. this as we always say is the warning light on it telling us that its days are numbered.