89 Supra Turbo wont start- HELP

[StoryOfTheUsed]

my 89 supra has this problem to sometimes but lately its been starting pretty well

[HondaOz]

i recently had a problem with mine. On my way to school it started to overheat, and all I've had in my radiator lateply has been mostly water. well... to make a long story short, i stoped, checked the hoses and it seemed fine, but the side of my engine was steaming like crazy and I saw radiator fluid dripping from the side and close to my oil filter, does this mean I cracked my block, or blew my head gasket, or what?

[xtoyotacorex]

Originally Posted by HondaOz

i recently had a problem with mine. On my way to school it started to overheat, and all I've had in my radiator lateply has been mostly water. well... to make a long story short, i stoped, checked the hoses and it seemed fine, but the side of my engine was steaming like crazy and I saw radiator fluid dripping from the side and close to my oil filter, does this mean I cracked my block, or blew my head gasket, or what?

yeah dude, you should get that checked out asap. When you drive, does your car run bad? Does it profusely smoke out the tailpipe? Try and locate the leak, if its coming from where your head meets the block, you might have blew a head gasket, most likely. Dude, it is MUCHO IMPORTANTE' that you keep 50/50 mix of antifreeze and H2O in the engine my brotha. Not only does the anti freeze lower the freezing point of the water, but also raises the boiling point to 265 dergrees!! Very important, if your engine only has water in it, I think the boiling point of water is 212 degrees. Good luck!

[HondaOz]

thank you so much man, I know that our year supra is known for going through head gaskets like a fat kid through cakes, thats the only thinks that sucks about it, but I got a friend that can find an engine for me with a few mods done to it for cheap, but Ive also talked to japanese specialist about just going ahead and doing the turbo swap, but the only problem is that they say is better to just buy one that is turbocharged and upgrade the turbo, what you think?

[Supraman_87]

oh haha that one problem with the car not starting that sounds like the problem i had i had to sand off the battery cable connectors and the lil stand things on the battery they prolly have a very bad connection and doesnt get enuff juice to start for awhile if nothing is wrong with the starter and soil.

[Original Evil M]

You know my 88 NA Supra does the same thing. But Ive noticed that if you have on a lot of your accs.(heater, radio, ect.) it wont start, but by shutting them off allows the car to start. This happens to me on cold days even with a brand new 770CCA battery. What I am thinking is the Voltage regulator is bad, which you cant get away with replacing it directly since its housed inside the alternator. The reason I think its this is because at night when all of the accesories are running and its just idling the volmeter drops to 12V or below, but if I rev the engine around 1500-2000rpm the dash lights get brighter and the voltermeter reads 13+V. I just purchased a used alternator and when it arrives Ill swap it and let you know if it worked.

As to disabling the factory alarm, that didnt help the situation because I yanked the fuse because it also controls the horn, which seemed possesed and would randomly just come on.

[nose-gobblin]

hmmm MAF

[supra89]

My 89 Supra has had similar issues. I think the occasional clicking and not turning over has been isolated to the battery cables.

However, I am still having other issues. The car is turning over just fine now but it wont fire.... Still working on the issue so I can drive the car home.

The previous owner said he had it checked at one point and the ECI was diagnosed as the issue. I don't buy that cause its an intermittent issue and the car runs fine when it cranks.

I am hoping to just get it somewhat dependable to get it to tire shop, parts store, etc. Though that sounds kind of funny reading the previous sentence.

Any suggestions?

Anyone have any valuble links to replacment parts and/or hop ups for 1989?

[Puls8]

Owning a 1988 Toyota Supra with a 7M-GTE and being a Toyota mechanic, I have experienced the same problem, all lights and accessories worked, but the starter made no sound when trying to crank. My Supra is auto, and with a few small tests with a test light, I narrowed the problem down to being the neutral start switch. On the starter motor there are two main cables going to each side of the starter. There is also another smaller wire going to a connector, this is the signal that the neutral start switch sends to the starter motor to tell it to crank. When checked with a test light, no power coming from this cable while attempting to crank the engine means your starter won't work. The neutral start switch is around AUD$195, and the closest genuine Toyota one to me was in Japan... It is possible to bypass this, however not recommended. All I did until I could afford to buy the part was hook a small wire (it doesn't need to be anything big) from the + terminal on the battery to a small 7.5amp fuse then to a switch in the dash, then from the switch to the neutral start switch signal terminal on the starter motor. I turned the ignition to on, flicked my switch and the engine cranked perfectly, no more problems. (Note: when the NSS was on it's way out, the starter would sometimes click. My starter motor was brand new. When the NSS died forever, there was no sound from the starter. Obviously when the switch is on it's way out, the noise can be confused for starter motor problems.)

[89supraturbo6453]

i just had to sign up bc i got the same prob wit my 89 7m-gte
it seems to be the brown wire to the starter as described earlier
i disconnected it and reconnected it and tried to start it and it turned right on and i been tryin jumpin it and chargin the batt for two days and its less than a yr old so if it happens again just mess with that wire and it should work
best of luck

[hotmess]

I got a 87 Supra, it has been sitting for about 1 year and a half. I can't get it started. I changed the oil, checked the fluids, checked the spark plugs, i hear the fuel pump when i turn the key before i crank it, i changed the battery, i put fuel booster in the fuel too but i still won't crank. I turn the key and it turns over but i doesn't crank. From what i hear now compared to when it normally starts it seems like it is having a hard time cranking it. It just sounds weird when i am trying to start it, like it doesn't have enough power or something. I need help. Any other thoughts?