Corolla 1993 1.8L LE electrical

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Old 14 Dec 2011, 02:44 pm   #1 (permalink)
Corolla fan
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Default Corolla 1993 1.8L LE electrical

Re: 1993 Corolla 1770cc LE; ~480,000 km

Sometimes when starting the car, as soon as the ignition is turned on,
everything will go dead. Most often this happens right away, before the
starter relay activates.

Removing and replacing the negative battery terminal restores everything
and the car will then start normally. (The terminals are clean and the
battery is charged).

I discovered that opening and then closing the passenger door also 're-
sets' whatever is cutting out the ignition and all power. Am I
'unsticking' a relay somewhere? Can you suggest what might be causing
this? Are there further checks I could make?

I would be grateful for any positive suggestions.

Jack




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Old 14 Dec 2011, 06:24 pm   #2 (permalink)
NM5K
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Default Re: Corolla 1993 1.8L LE electrical

On 12/14/2011 1:44 PM, Corolla fan wrote:
> Re: 1993 Corolla 1770cc LE; ~480,000 km
>
> Sometimes when starting the car, as soon as the ignition is turned on,
> everything will go dead. Most often this happens right away, before the
> starter relay activates.
>
> Removing and replacing the negative battery terminal restores everything
> and the car will then start normally. (The terminals are clean and the
> battery is charged).
>
> I discovered that opening and then closing the passenger door also 're-
> sets' whatever is cutting out the ignition and all power. Am I
> 'unsticking' a relay somewhere? Can you suggest what might be causing
> this? Are there further checks I could make?
>
> I would be grateful for any positive suggestions.
>
> Jack
>
>
>
>


You need to thoroughly clean and reinstall the battery
connectors and posts. If they are too corroded, get new connectors.
That should cure the problem.
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Old 14 Dec 2011, 06:27 pm   #3 (permalink)
NM5K
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Default Re: Corolla 1993 1.8L LE electrical

On 12/14/2011 5:24 PM, NM5K wrote:
> On 12/14/2011 1:44 PM, Corolla fan wrote:
>> Re: 1993 Corolla 1770cc LE; ~480,000 km
>>
>> Sometimes when starting the car, as soon as the ignition is turned on,
>> everything will go dead. Most often this happens right away, before the
>> starter relay activates.
>>
>> Removing and replacing the negative battery terminal restores everything
>> and the car will then start normally. (The terminals are clean and the
>> battery is charged).
>>
>> I discovered that opening and then closing the passenger door also 're-
>> sets' whatever is cutting out the ignition and all power. Am I
>> 'unsticking' a relay somewhere? Can you suggest what might be causing
>> this? Are there further checks I could make?
>>
>> I would be grateful for any positive suggestions.
>>
>> Jack
>>
>>
>>
>>

>
> You need to thoroughly clean and reinstall the battery
> connectors and posts. If they are too corroded, get new connectors.
> That should cure the problem.


BTW, you say they are clean, but for some reason
they are not making a good contact with the posts.
So make sure the posts are clean and polished up,
and also the insides of the connectors. If pitted, they
can look clean, but still not make a decent contact
with the posts.
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Old 15 Dec 2011, 02:05 am   #4 (permalink)
Illuminated
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Default Re: Corolla 1993 1.8L LE electrical



Sounds like the ECU is running Windows 98 !!!!!
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Old 15 Dec 2011, 06:33 pm   #5 (permalink)
Corolla fan
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Default Re: Corolla 1993 1.8L LE electrical




When the passenger door is closed firmly, everything is 're-set' and
full power is instantly restored. Therefore the problen is not the
battery terminals (assuming for a moment that closing the door doesn't
clean the terminals!) Could there be a relay jamming?

- Jack



"Illuminated" <asif@getreal.com> wrote in
news:jcc67h$f2i$1@speranza.aioe.org:

> Subject: Re: Corolla 1993 1.8L LE electrical
>
> Sounds like the ECU is running Windows 98 !!!!!


(or 3.1 - J.)




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Old 15 Dec 2011, 10:59 pm   #6 (permalink)
NM5K
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Default Re: Corolla 1993 1.8L LE electrical

On 12/15/2011 5:33 PM, Corolla fan wrote:
> When the passenger door is closed firmly, everything is 're-set' and
> full power is instantly restored. Therefore the problen is not the
> battery terminals (assuming for a moment that closing the door doesn't
> clean the terminals!) Could there be a relay jamming?
>
> - Jack


What relay would supply power to the whole car?
It could possibly be a loose cable from the battery,
but it's still more likely to be the terminals.
Closing the door does not clean the terminals, but the
vibration could be enough to start a new connection.
I bet if you got someone next to the battery when you
"reset" it, that you can hear a faint arc from one of
the terminals when it restores the connection.
But when you draw a heavy load like using the starter,
or often just the headlights, the very small connection
that is made when the connection arcs is not enough to
carry the high amp draw, and it's kaput until you re-seat
the connection, or it "arc welds" a new tiny connection
again from vibration.
I've seen this problem a zillion times on various
vehicles.. It's almost always bad battery connections,
or a loose cable from the battery. I can think of no relay
that would cause this.


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