no crank yes crank

[supraboymk3]

ok so my supras been acting really funny lately. So the other day i fill up the tank and run the car for the whole day. It was fine, ran ok, started ok all that. I stoped at a gas station to get me something to drink:icon_razz came back to the car and.. guess what no crank only a big click. so im thinking ok is the starter right. after a few times then i finally get a crank but no start. try it again got a crank but no start and then click but no crank. the point is its random, i get a crank once but it wont start then a click the next time. so i left the car alone and came back a few hours latter when the car was cool. and guess what. it started. So its only random and when its hot and im thinking the problem is one thing, but what could it be?

please help
thanx:biglaugh:

 

[Nick M]

It is probably the starter, but I can't reach the small wire from here.

 

[radiod]

I've had this problem and it eventually went from a intermittent no start to an always no start. My starter ended up being the problem. It could be a bunch of other things as well though. The click you are hearing from the passenger side is the starter relay clicking over. You can test your relay, make sure that's functioning properly. Another good thing to test is the voltage drop between the battery and the single wire running to the starter. NOT the main supply, but the trigger wire. It's a black wire with a blue stripe on a single clip. If you're getting significant voltage drop there's something building too much resistance and/or a loose connection between your ignition and your starter.

 

[89supra7mgte]

I would start by making sure your grounds are good and tight as well. when metal gets hot it expands when cool it shrinks, just a thought maybe you are losing ground connection when hot, and after sitting and cools down you get a better connection?

 

[Joe]

So how did you get home? Tow?

Well i have the same problem. We just replaced the 7mgte for another.It was this past sunday.After my cousin told me to crank it it did not crancked only the click.So, he pulled out the big battery charger and it started.One chance is your battery needs to be replaced.For me i got home after 14 hours of 7m work and stoped the car right in my drive way and guess what "click ,click".:3d_frown:

 

[supraboymk3]

well im lucky cuz i live near by so i left the car there and came back 3 hours later and it started. its funny the way it dose it becase in the first hours is just a click and no crank or you get a crank every now and then. then when you come back an hour later you wil get a full crank but no start. then 2-3 hours later you get it to start by pumping the gas pedal and ill start after all.

 

[supraboymk3]

o and i do get a spark when it cranks over it did this last night again

 

[Joe]

Next time it clicks, have a jump starter if you can, and probaly it wil start.

 

[89supra7mgte]

Is the click you hear inside or outside? starter relay or solenoid? if you can hear it by the starter next time you get it to just click try gettin a pole or prybar and tap on the solenoid. Do you dash lights or interior lights dim? if they dim slowly the starter might be drawing too much or your battery is weak.

 

[gaboonviper85]

well im lucky cuz i live near by so i left the car there and came back 3 hours later and it started. its funny the way it dose it becase in the first hours is just a click and no crank or you get a crank every now and then. then when you come back an hour later you wil get a full crank but no start. then 2-3 hours later you get it to start by pumping the gas pedal and ill start after all.

It's a fuel injected car...pumping the pedal does nothing for you...stop doing that.

 

[89supra7mgte]

very true

 

[MKIIISupraGuy]

What do the cables going to the battery look like? worn, not tightly connected, exposed wire strands, corrosion build-up ??? All and any of these can have adverse effects.

 

[Poodles]

It's a fuel injected car...pumping the pedal does nothing for you...stop doing that.

Depends, if it starts with you pressing the pedal and not without then you have issues.

 

[radiod]

Wires to check:

Grounds - Make sure they are clean and tight
Battery Terminals - Same deal, make sure they're clean and tight
Positive supply to the starter - Again, clean and tight. Make sure the cable is attached to it's ends properly as well (bolted/soldered/crimped in properly)

If you have a car handy to try and jump start you try jumping normally off the battery terminals. If that doesn't work, try attaching the negative cable to a good ground point (I used the bolt on the brace for the intake manifold). If that DOES work, you've got ground issues.

Check the voltage on the battery. It should be 12.6V or higher if it's fully charged (6.1V per cell, 6 cells). If it's NOT starting, check and see if the voltage is dropping when you turn the key. You should see a significant drop if the starter is trying to pull juice. If you can, check and see exactly how much amperage your starter is drawing (using an inductive amp clamp).

Load test the battery, make sure it's good for what it's rated AND that it doesn't die as soon as it gets any sort of draw.

Check your AM2 fuse in your box under the hood.

Just a few couple ideas.

 

[gaboonviper85]

Depends, if it starts with you pressing the pedal and not without then you have issues.

At that point you already know you have a problem...so why pump.

 

[89supra7mgte]

By hold the throttle open you are letting more air in correct? Well isnt that the purpose of the iscv? Not designated to cranking though.

BTW holding the throttle should not have anything to do with it not CRANKING?

 

[kanji1jz]

Check for fuel pressure when it won't start. You may have an intermittent fuel pump issue as well as a starter issue. Maybe get your battery/ charging system checked to be sure that you have no problems with that system. Also what do you have as far as fuel pressure regulator? stock/ aftermarket? maybe something to do with that as well. fuel filter? last time changed if ever. Could possibly be clogged or failed.

 

[scubajtw]

If it is an internal click in the starter could be corroded contacts on the plunger of the starter. This happens with a lot of the Toyota starters. MOST of the starters can be fixed with new contacts and a plunger. However the supra does not have them from the dealer. I was having an issue with mine and took some fine sandpaper and cleaned them up works like a dream now

 

[bozosoku]

check battery terminal first, until a few weeks ago I could not believe a seemingly good battery contact cannot even deliver enough juice to power a dome light.

 

[Joe]

So after 2 days got a rebuild starter and the click problem went away.Then yesterday, it came back:: angry ::.This is what i did to see if i could fix it. Put the car in reverse and try to move it a bit and i also hit very lightly one of the wires.Then i cranked it and it started. :icon_bigg