Electrical issue
#1
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Electrical issue
This problem is with a 91 toyota pickup 4wd, efi, it started making some weird noises when I start it, like static, then it would not start, battery test 12.4 engine off,then it did start, I would like to figure out what the problem is so I don't get stuck some where, I have some basic electrical skills, if someone could throw me some suggested tests, I should be able to carry them out
thanks
thanks
Last edited by rubronthroad; 01-30-2017 at 12:56 PM.
#2
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Your getting static through your speakers ??
This noise is something else but this is the only reference you have
Is this while the key is in the start position (attempting to crank)
The engine cranks or it does not at this time??
It might be the contacts in the Circuit opening relay chattering
Chattering contacts or something arcing is about all I can think of that might sound like static
Then it might be any of the relays energized in the starting circuit
If the engine does not crank it might be arcing at the starter
Either the main battery cable or the solenoid connection
Relays can be tested by making some jumper leads
One with a fuse energize the coil most all relays are marked ..
If it makes your noise you found the bad one
This noise is something else but this is the only reference you have
Is this while the key is in the start position (attempting to crank)
The engine cranks or it does not at this time??
It might be the contacts in the Circuit opening relay chattering
Chattering contacts or something arcing is about all I can think of that might sound like static
Then it might be any of the relays energized in the starting circuit
If the engine does not crank it might be arcing at the starter
Either the main battery cable or the solenoid connection
Relays can be tested by making some jumper leads
One with a fuse energize the coil most all relays are marked ..
If it makes your noise you found the bad one
#3
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Thread Starter
Thanks Wyoming, no the static noise is not from the speakers( don't have any) yes the truck did turn over after not wanting to, I am guessing there is a system of checking the relays and fuses until I find the problem, but will I be able to find the problem when the problem isn't present?
#6
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Yes I have found the threat of impact by a 5 pound hammer on electronic parts cures the problems .
I keep one handy by the computer it keeps it on the straight and narrow .
Kidding aside You just need to work your way through the cranking (starting) Circuit
The static type noise is puzzling then if I heard it in person I might know just what it is
I keep one handy by the computer it keeps it on the straight and narrow .
Kidding aside You just need to work your way through the cranking (starting) Circuit
The static type noise is puzzling then if I heard it in person I might know just what it is
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#8
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Thread Starter
Yes I have found the threat of impact by a 5 pound hammer on electronic parts cures the problems .
I keep one handy by the computer it keeps it on the straight and narrow .
Kidding aside You just need to work your way through the cranking (starting) Circuit
The static type noise is puzzling then if I heard it in person I might know just what it is
I keep one handy by the computer it keeps it on the straight and narrow .
Kidding aside You just need to work your way through the cranking (starting) Circuit
The static type noise is puzzling then if I heard it in person I might know just what it is
#9
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Thread Starter
Thanks Co, I just remember the zzzt sound, I know what you mean by the tick/tick noise, I will be looking at the ignition switch
#10
And where are you hearing the sound from?
Are all your connections for suspect areas clean and secure, meaning bare shiny metal contacting bare shiny metal?
Are all your connections for suspect areas clean and secure, meaning bare shiny metal contacting bare shiny metal?
#11
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Thanks Rad, I will dive into it when I get the chance, I work outside and I have to wait for a day when it is overcast and that isn't often.
#13
LOL! Aloha!
#14
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Thread Starter
thats t's my reality , nice weather for me are cloudy days, we are on a lava flow at 1000' with no shade, so until I get a shop roof up I can only work on stuff about 10% of the time
#15
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Thread Starter
You helped me with an electrical upgrade on my 87 a few years ago, so I know your a good resource.
#16
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Thread Starter
Still having problems with the 91 22re, most of the time runs fine, then it made a tickity noise in the area of the COR, so I thought that might be the problem, then went to start it, got a partial ignition noise, like brap! ,then nothing, tried a few more times, no noise, no lights, no start, replaced the COR , still nothing, let it sit for a half hour, then it started up, kind of concerning, I tried to start the truck without the COR and I get lights and it tries to turn over, so it seems that isn't the problem( had a problem with my COR getting wet and shorting out so replaced it, and fixed the leak that was about 4 years ago ) I am glad it runs but I would like to find the bug, Wyoming suggested looking at the ignition switch, aside from taking it out and visually inspecting and cleaning contacts are there electrical tests to do as well? The battery reads 12.5, the alt belt is a little loose, it is adjusted all the way out, the belt must be stretched, the battery is still getting charged though. Any other suggestions would be appreciated.
thanks
thanks
Last edited by rubronthroad; 05-10-2017 at 08:44 PM.
#17
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Ok is this a failure to crank??
Sometimes the engine just does not turn over (crank) Turn to start it does nothing!!
Neutral safety safety or clutch safety switch depending what you have in the open position
Turns real slow ?? battery terminals, battery cables or ground connections
Just because the battery is charged it still needs to get the voltage where it needs to go
How many miles Starter contacts ??
It cranks just fine will not start ??
Figure out one part of the problem at a time.
I hope you have a Meter your going to need it
Sometimes the engine just does not turn over (crank) Turn to start it does nothing!!
Neutral safety safety or clutch safety switch depending what you have in the open position
Turns real slow ?? battery terminals, battery cables or ground connections
Just because the battery is charged it still needs to get the voltage where it needs to go
How many miles Starter contacts ??
It cranks just fine will not start ??
Figure out one part of the problem at a time.
I hope you have a Meter your going to need it
#18
"No start" is a vague phrase.
You need to tell us whether the issue is "No Crank" (Starter did not turn), Or No Combustion ( No VROOM).
"Nothing", "no noise", "no lights" are indication of power issue. Are you absolutely sure that your electrical connections have secure and have shiny, bare metal contacting shiny bare metal?
How about your battery? You mentioned it's from 2008.
Quick check without taking it to the shop/store:
Everything off:
Probe battery POST for voltage. What do you get?
Probe battery TERMINAL for voltage. What do you get?
Yes, Need the two separate test points above. They can tell us something.
Turn headlights on, High Beams much better:
Probe battery POST for voltage. What do you get?
Probe battery TERMINAL for voltage. What do you get?
Yes, Need the two separate test points above. They can tell us something.
Last edited by RAD4Runner; 05-11-2017 at 02:25 PM.
#19
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I have dealt with the clicking relay numerous times and it is has always been a weak battery in my case. What is your voltage on the battery when the engine is running? You need high 13-14 volts.
#20
If COR clicks and idle drops or sounds like it is stalling, especially at idle, I narrowed mine down to leaking intake hose.