Have had my baby for 3 years now and have had on going problems with it especially starting in the summer time. If you trun off car to nip into a shop then try start it again, it wont start. The engine light does not come up and have figured you have to wait for around 20mins for it to cool down and car is ready to start when engine light shows up again and it will go.
My current problem is its turning over but just not starting from cold, engine light doesnt show up. Have started it by push starting and will go fine but after a while battery light will turn on.
Do you have any clues as to what the problem may be? I have just replaced alternator bushes. so unsure if it is alternator issue.
Many thanks, Erin, NZ
I have the same issues with other cars and if the car is equiped with a crank shaft postions sensor if its bad it can cause the issue replace that and i can almost say that wil fix the problem if not then other options can be at hand you run the motor and then you shut it off and then try to restart it and it wont sounds like that may bet he problem good luck and keep me posted
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Re: 1991 Toyota Supra Not starting
Its going to be the alt and battery combined..even if you had the alt rebuilt there is no guarantee it tok care of the problem. i would go get a new battery and put in it and see what that does and if the battery lights comes back on then you know the alt is bad
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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.
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.
Being this is an older car it could also be your ignition switch. I would start there as this sounds exactly like an ignition switch. If when it doesn't start you hear nothing, no clicks, starter trying to start etc, I would replace the ignition switch. It's not expensive and if you talk to the guys at the parts store they can give you a good idea how to do it. They will likely even let you look at a Hayes book in the store to see how it's done. It's really very simple.
piston rings are shot and your valves need to be replaced
have you been racing this vehicle or has previous owner
if you just bought the car im sure last driver had it semi decked out now you will need a laptop the cars software to reset vehicles computer back to factory settings
when owners drive there vehicles they set them up in a way so more gas and throttle can be applied you just need to reset everything back to factory settings on comp
and if that dont work you will definatly need to do an over haul