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The mkiv Supra Owners Club

Car Not Starting


SupraJames

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Hi all, as its a nice sunny day thought I would pull the car out the garage for an oil change, started car reversed out onto the drive to where i wanted to work on it, turned it off all as usual. Went back 5 mins later to start it again as noticed a tiny coolant leak from the top rad hose and wanted to confirm this is where is was coming from. Turned the key and nothing, checked to make sure i was not in D or R and I was not just got a click and nothing. Now I have a starter motor go before and it was not so sudden just now and again it would not start and sometimes would take several attempts to start, but I have tried loads of times and still nothing. Battery is full as it sits on charge when I am not using the car, have check voltage, and also the relay and all look fine.

 

Thanks

 

James

Edited by SupraJames (see edit history)
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Hi all, as its a nice sunny day thought I would pull the car out the garage for an oil change, started car reversed out onto the drive to where i wanted to work on it, turned it off all as usual. Went back 5 mins later to start it again as noticed a tiny coolant leak from the top rad hose and wanted to confirm this is where is was coming from. Turned the key and nothing, checked to make sure i was not in D or R and I was not just got a click and nothing. Now I have a starter motor go before and it was not so sudden just now and again it would not start and sometimes would take several attempts to start, but I have tried loads of times and still nothing. Battery is full as it sits on charge when I am not using the car, have check voltage, and also the relay and all look fine.

 

Thanks

 

James

 

No click from the relay or solenoid? I don't suppose you've got an immobiliser / alarm that's interfering?

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Sounds like another starter rebuilt job. Is it a click from the relay in the engine fuse box or a more of a clunk, from the solenoid on the starter?

 

You could try manually bridging the pins on the starter relay to see if it will spin over that way.

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Ok update time, overhauled the starter motor today but before hand bench tested it and all worked fine. Overhauled it anyway as already bought the parts. Go home refitted it and still wont turn over :( Chatted to Lee P and he suggested a few things so I have tried the following

 

Turned over engine by hand with a 22mm socket on the crankshaft pulley and all turns over fine, no sticking or clunking.

 

Tested power at starter motor and motor is getting a perm 12v and relay is working fine as tested the click connection and that is also getting a 12v feed on trying to start.

 

The starter solenoid is clicking in as could hear and feel it working while under there.

 

Starting to get a bit worried its something major that is stopping the engine turning over, is there anything else I can try..??

 

Thanks

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Yep tested those and both are working as they should, cant tell you exact voltage as using a very old multi meter lol. The solenoid is clicking in so would assume its also grounded ok. Car was started fine, moved then went to restart 5 mins later and this is when the problem started.

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Clicking says it's touching an earth, not necessarily a good enough earth to start the car. All else fails, run a live from the + on the battery directly to the starter, if it starts, it's between the switch and the starter.

 

Also check the inhibitor switch. Wiggle the sh!t out of the gear stick in park and see if it goes then.

 

You'd never have this problem on a 6spd.... ;)

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Ok update time, overhauled the starter motor today but before hand bench tested it and all worked fine. Overhauled it anyway as already bought the parts. Go home refitted it and still wont turn over :( Chatted to Lee P and he suggested a few things so I have tried the following

 

Turned over engine by hand with a 22mm socket on the crankshaft pulley and all turns over fine, no sticking or clunking.

 

Tested power at starter motor and motor is getting a perm 12v and relay is working fine as tested the click connection and that is also getting a 12v feed on trying to start.

 

The starter solenoid is clicking in as could hear and feel it working while under there.

 

Starting to get a bit worried its something major that is stopping the engine turning over, is there anything else I can try..??

 

Thanks

 

Did you try what I mentioned above?

 

> You could try manually bridging the pins on the starter relay to see if it will spin over that way.

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Ok further update, still having the problems :( starting to get worried its something major now. Have bought a digital multi meter now though, here is what else I have tried and voltage readings:

 

Battery is a Optima Yellow Top fully charged using a CTEK XS3600 charger.

 

Voltage @ Battery Terms - 12.74

Voltage @ Battery Terms when trying to crank - 11.77

Perm Live feed @ Starter Motor - 12.74

Relay Live feed @ Starter Motor when trying to crank - 12.11

 

Have connected a jump cable from starter housing direct to batt neg term (to eliminate earthing issue) - Problem is still there

Bypassed relay but running a wire from starter direct to battery pos term (to eliminate relay issue) - Problem is still there

 

Engine still will not turn over, starter solenoid is clicking in but starter is not spinning. Now either my starter motor is shot to bits or something is stopping the fly wheel turning.

 

Really need the car next weekend for Trax but at this rate im starting to loose hope :(

 

Any advise would be great, thanks.

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what i did when my starter went, was to use a 4x4 and put it on the case of the starter and gently punsh on it with a hammer :D helped a few times....maybe the starter shaft is stuck or something????

 

isn't it possible to have the starter out of the car and use a battery to test it??

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