89 Supra Turbo wont start- HELP

[chrlisangel]

Hello,
I have an 89 Supra Turbo and have a starting problem. Sometimes the car will start right up perfectly other times it wont start at all. It wont even crank over or try to crank. The only thing that happens is the dash lights come on but nothing else. Other times it starts right up. Sometimes if I go somewhere, park the car and come out it wont start, so I wait about a half hour sometimes more and then it starts right up. Other times its just sitting in the driveway and the next day I go out and it wont start. This is sooo very frustrating and 3 mechanics I have taken it to cant figure out why it does this. The starter has been replaced, the starter solenoid replaced , has a brand new battery, brand new spart plugs and brand new starter relay and still the same problem. One thing I noticed is this seems to be on warm days outside, mind you the car is not overheating because it merely is sitting in the driveway at times it does this. The only thing I noticed is that the minute you hook a battery charger to it , it starts right up immediately without having to wait for the battery to charge. This problem is so frustrating and I love the car so much but its left me stranded many times just going to the grocery store around the corner and not wanting to start back up for a half hour or so, so I am afraid to drive the car any distance for fear of being stranded. Other than that this car is awesome. Please can someone help me with this. I would appreciate it so very much. This is my first time posting here.
Hugs,
Lisa

[projectsupramk3]

Are you saying it randomly won't even crank over, or it cranks but won't start. If it doesn't even crank the problem is most likely the starter contacts, SOGI has had a tech tip for replacing them out forever...
http://www.supras.com/04/resources/i...d=68&q=starter
Replacing the entire starter and solenoid should have fixed the problem, since it did not go make absolutely sure that the "mechanics" didn't rip you off by using your old one. If it cranks but won't start it could be alot of things, heat soak in the fuel rail, heat soaking of a bad coil, pulling the codes could narrow it down. Also one simple thing to check is the battery terminals, take them off and clean the posts very good with a wire brush, replace the positive and negative cable ends if they are badly corroded.

[chrlisangel]

Hello ,
Thank you so much for getting back to me. It is a random problem and it wont even crank over, wont make no sound at all, just dash lights come on. I can even turn my headlights on so I know its not the battery. But you may be right in saying its the cable ends. That makes sense since if I put the battery charger on it starts right up instantly with the charger only charging it for a second. Its so confusing to me. The starter was replaced twice. The second "mechanic" thought I might have gotten ripped off so he replaced it and both times the solenoid came with the starter. So for the most part the car is now parked cause I am afraid it will leave me stranded. Its so random that it wont start..but does it all the time so its not random meaning once in awhile, its random meaning all the time then randomly will also start like its brand new. Also and this is weird but sometimes and this is not always but if I put the key in and turn the car on to start and leave it completely turned there and its silent no cranking sound , sometimes in 5 seconds or so the car will turn over. I am wondering if thats an indictation of where the problem might be? And why only when its warm outside. Thats very strange of maybe the weather is a coincidence?
Hugs,
Lisa

[Technical_Automan]

Sounds to me like your battery cables might be too loose. I had the same problem with one of my cars, it would randomly not crank but the dash and headlights still worked. But with a 15 year old car you never know, could be like 10 different things. None of the mechanics said anything about the Igniter or Ignition Coil? Connections there could be loose too. But it doesn't sound like anything major, just a loose or weak connection somewhere.

[dspoon]

89 turbo owner I once had a problem like you have and I tryed everything one day I put the car on jack stands and found a loose wire
connection on the starter not the the big wire on the starter but the little connector I think it has two wires and a brown plastic connector that plugs in to the starter mine would jiggle loose and it would do what your car was doing every thing but start a dap of glue and my problem fixed
GOODLUCK
RICH.

[BobbyisKing]

hey, i've been having the exact problems too, so i hope someone finds out what is wrong with it. im confused too so, o well.

[g118481]

I have a 87' NA Supra. This car is in excellent condition, however, I am experiencing the same cranking issue.

I have also had the starter replaced and the engine went over with a fine tooth comb, with no resolution.

However, I have come to the conclusion that the problem lies in the FACTORY ALARM SYSTEM. Why, well if I do not activate the alarm by locking the door, the problem doesn't occur. This is of course not the answer to the issue, because it means the valuables such as the sound system could be stolen.

I too look forward to someone coming forward with a workable resolution. At this moment, I am considering disabling the FACTORY ALARM SYSTEM.

Cheers

[flyinMKIV]

Starter cylinoid, possibly

[87turbo]

try this if the car is an auto try wiggleing the shifter when its
in park of shift in down then up. it could be you nuetral start
switch thats causing all the problems or just crappy wireing.

[baodownbia]

i had the same exact problem guys...with a 90 turbo supra but the problem turned out to be that the battery wasnt screwed in tight enough...hope that helps

[MKIII87Turbo]

Like 87Turbo, my car does the same thing. I just push the shifter up a little more and it starts right up. One day I will fix it.

[HondaOz]

my 89 supra 7mge has this problem.... I put a new battery on and the lights in the car and the alarm work, but my gauges won't cut on, or the radio, and when I try to crank it up, i don't hear the starter clicking or the fuel pump turnin on, so I looked into the fuse box and one fuse was blown, so I replaced that, but I'm not sure why the car doesn't still cut on!!!??? I also dunno how to check the big fuses that are in the box to see if they work or not? does anybody know was wrong with my car. I needed to get it running soon again, because I need to find a better job, please if you have any clue let me know.


LETS PRAY FOR THE TSUNAMI VICTIMS....

[xtoyotacorex]

It has nothing to do with your starter my friend. If your turn the key and all the lights come on, but no crank, thats not your starter, especially if you have changed it twice!! Good rule of thumb, 99% of the time. If you here 1 click, it's the battery. If you here multiple clicks, it's your starter solenoid, of course this is all while turning the key in attempt to start your car. Why?? Well when your turn the key, your battery sends a pulse of electricity to your starter solenoid so your starter gear will turn. If you here 1 click, and no more, that means pulses arn't getting to your starter, meaning the problem lies within the battery and respective connections. If it's multiple clicks, that means that your starter solenoid is receiving the electricity, but not engaging the starter gear, which means the problem lies within the starter. Open your hood, You have two cables, a ground(black) and positive(red). Follow the cables to their places and make sure they arn't loose. What you need to do next is take them off your battery, and use a steel brush and clean your battery ports, just scrub that shit clean, next scrub the inside of the battery connections, make sure their clean and shiny as well. Next bolt those suckers on TIGHT. I hope this helps you and the other fellow. Good luck!

[HondaOz]

i did all that, but I forgot to mension that i accidently put my negative on my positive and vise versa, I think that fried my fusable link, because I don't even hear one click. So I bough a new one and I'm gonna try and install it today, I hope that was it, I just hope my ecu isn't fried. I also had to replace a crap load of busted volts....

whats ur opinion on this?

[xtoyotacorex]

I am not to familiar with supras, but I personally have reversed polarities on the battery, and all that happens is your main fuse goes. I doubt your ECU is fried, but it is a possibility, I guess. Their should be a black box in your engine bay that holds the main fuse for the bat, the link will be split like all other fuses, I think it is a 60volt fuse, not too sure. Let us know what happend! Good luck!