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Author Topic: help getting the new 85 hatch going  (Read 1526 times)

Offline corax

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Re: help getting the new 85 hatch going
« Reply #15 on: Dec 16, 2017, 01:40:02 am »
Starter issue could also be low voltage at the starter on the thinner black wire (spade connector).  All the current for the starter solenoid goes through the ignition switch, and they sometimes build up resistance which drops the voltage below a level which will fully actuate the starter solenoid.  With the thinner black wire connected, check for voltage while the engine is cranking - anything less than 10-11 volts is bad (battery voltage while cranking).

Something like this can be used to fix it, or you can build your own with a relay, fuse, and some wire
http://www.painlessperformance.com/webcat/30202

DIY thread: http://www.mk3supra.org/topic/10-guide-start-relay-mod/
'85 RA64 Celica GT notchback

Offline sirdan

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Re: help getting the new 85 hatch going
« Reply #16 on: Dec 16, 2017, 02:55:24 am »
I did mine with a ford relay.
http://www.toyota-4runner.org/classic-t4rs/119611-final-fix-intermittent-no-crank-22re.html

If you tinker with cars you might have one laying around. or you might get one in the junkyard. The relay is a heck of a lot cleaner looking though but, I'd bet the ford starter relay is damn near bomb proof.

But before you even bother installing a relay just take nice thick gauge wire run it from the battery positive to the solenoid  plug and just tap it to it and see if it works. If that doesn't work its not your issue.
1988 4runner

Offline oilspot

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Re: help getting the new 85 hatch going
« Reply #17 on: Dec 16, 2017, 12:46:16 pm »
I'm very familiar with the ford relay trick. I drove old air cooled vw busses for years and they all had voltage drop problems at the starter solenoid.
Never had that problem in any other vehicle... so thank you for pointing me in that direction!!!
I used to have to run the starter in old bus (i was really young) with a screwdriver quite often to get it to start (before i knew about the relay trick). I'd just bridge a screwdriver between the + and - posts of the starter and run the starter for a second and then she'd start right up. I climbed up underneath my little celica to do the same but I didn't see a negitive post to bridge to (I was in a rush, digging through cobwebs under there, and was using my phone as a flashlight). Can I run the starter motor without engaging the solinoid by bridging the + to the starter body?
I also would have jumped the + to the solenoid quick to bump it, but the connection is buried under the plastic connection.

Offline corax

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Re: help getting the new 85 hatch going
« Reply #18 on: Dec 17, 2017, 03:49:59 pm »
Can I run the starter motor without engaging the solinoid by bridging the + to the starter body?

No, no, no.  It sounds like old VW stuff is a bit different.  If you bridge the battery cable + to the starter body, you just create a whole lot of sparks and heat

a whole lot of starter info here: http://www.4crawler.com/4x4/CheapTricks/Starter.shtml

In the pic below, the battery cable connects to the bolt on the left (the big one which whoever took this pic is holding).  the solenoid plunger (missing in the pic) bridges the contacts and power flows to the starter motor via the covered cable on the right
'85 RA64 Celica GT notchback

Offline oilspot

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Re: help getting the new 85 hatch going
« Reply #19 on: May 09, 2018, 01:20:31 am »
okay, after a long break I'm back working on it. After replacing the ignitor with a good used unit, and a new coil she'll fire up! Well as long as you spray a little starting fluid in it. So the no spark issue has been fixed.
Yay!!!

 

cognitive