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Old 05-11-2006, 04:21 AM   #1
RNEMESiS42
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Unhappy 87 Supra won't start

All right, this all started back last July when my Supra was selectively starting. It'd work fine for a day, then not start at all for a few days, then start working fine again. I got a brand new battery, and that solved the problem completely. Around October, the same problem started again, except now it didn't start at all, no matter what. I replaced the spark plugs first, then the igniter and the ignition coil. Still nothing. The distributor wasn't getting any spark. Since the weather is finally nice again, I thought I'd start working on it some more. I gave it a full oil change last night (it was black and goopy...) and replace the distributor cap and rotor. This morning I charged up the battery fully, and gave it a try. It started barely turning over, and then I gave it a bit of gas, and it caught! I thought that was great. I let it idle for a while, and then drove it around the block, no problems. I parked it back in my garage and turned it off. I suspected it wouldn't turn on again...and I was right. What is going on?!
I'm thinking I need to replace the whole distrutor, maybe? Maybe just the spark cables? I've basically replaced everything that has to do with the ignition, besides the ECU and distributor. I really don't know what else to try (especially since I got it to start up once today!)
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Old 05-12-2006, 03:21 AM   #2
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Tried starting it again tonight, it worked...turned it off and tried again after a few minutes, no go! I'm really frustrated with this, heh.
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Old 06-25-2011, 12:40 AM   #3
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Had the same problem...
Signal wire to the Distributor was bad! ...Hence no signal to the ECU. Figured this out while in the process of putting in and EDIS-6 ignition system. Runs just fine. Hope you get my reply!
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Old 06-25-2011, 07:30 PM   #4
interested!
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Question 87 Supra wont start

Quote:
Originally Posted by RNEMESiS42 View Post
All right, this all started back last July when my Supra was selectively starting. It'd work fine for a day, then not start at all for a few days, then start working fine again. I got a brand new battery, and that solved the problem completely. Around October, the same problem started again, except now it didn't start at all, no matter what. I replaced the spark plugs first, then the igniter and the ignition coil. Still nothing. The distributor wasn't getting any spark. Since the weather is finally nice again, I thought I'd start working on it some more. I gave it a full oil change last night (it was black and goopy...) and replace the distributor cap and rotor. This morning I charged up the battery fully, and gave it a try. It started barely turning over, and then I gave it a bit of gas, and it caught! I thought that was great. I let it idle for a while, and then drove it around the block, no problems. I parked it back in my garage and turned it off. I suspected it wouldn't turn on again...and I was right. What is going on?!
I'm thinking I need to replace the whole distrutor, maybe? Maybe just the spark cables? I've basically replaced everything that has to do with the ignition, besides the ECU and distributor. I really don't know what else to try (especially since I got it to start up once today!)
Hi!
From your description , you may be having an intermittent EARTH problem -these are needed to complete the circuit ! -everyone seems to believe that all they need is supply ! - have you checked the earth lead at the coil pack plate to cylinder head ? ( the plate is completely insulated due to the 4 rubber grommet mountings ) and all other earths?.
I had an old car that had earthing problems - the car had a carburettor and the flat earth strap had parted company at the clutch bell housing at engine to body -( out of eyesight )- basically rubbing each other at the split ,no continuity - the earth was being conducted through the choke cable - this got really hot at starting up - added a few more flexible earths I could keep an eye on -no more problems!

Last edited by interested!; 06-25-2011 at 07:52 PM. Reason: adding : engine to body :
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