Corolla 5afe No Start No Spark Please help

[Hassan1991]

Does car make backfires when gets start?
Can be wrong timing. Weak spark.

[abdkhan2]

It ls most probably crankshaft postion sensor.

[abdkhan2]

Experience the same situation a month ago and that was crankshaft postion sensor..black fire was so loud, even the filter box got cracked.

[Hassan1991]

5afe doesn't got that.

[pradeepbuss]

Yes after push start engine run with mis couple of minutes and back to normal beat

[pradeepbuss]

Thanks for reply bro.i am not sure You mean cranshaft sensor locate inside disributor?

[Hassan1991]

No crank sensor in 5afe
Means after push start car become normal?
Is ecu is getting crank signal? There's a STA pinout. But car gets start even without that.
Starter is working fine right?

[pradeepbuss]

Yes after push start car is normaly running. I can drive it without stop engine any distance i want.
I check Ne signal with multimeter. When i crank the engine Ne signal voltage is 0.2v - 0.3v Ac.i think its ok.

Yes ecu has STA pin. How STA pin important for car start?

Yes starter fine bro. Working normally.

[Hassan1991]

0.2 to 0.3 voltages at idle right.
STA tells the ecu that starter is cranking.

[SER_GTR]

to check it...replace Distributor with good one and check..

it can be problem with sensor as well as weak IGN coil or Ignitor..!

[pradeepbuss]

Ok thanks bro.

[pradeepbuss]

Ok.STA signal effect to No spark ?

[SER_GTR]

usually it dont but can cause wired starting issues....

[pradeepbuss]

Do you Know any wayTo check STA signal is correct or not?

[SER_GTR]

while cranking STA Signal Will Show +10-12v ..as soon as it start...it will disappear

STA only see +12v when you crank

[pradeepbuss]

Thanks bro i will check that definitely.

Do you have any idea why car start when push it?

[Hassan1991]

No it doesn't.

[Hassan1991]

Agreed.
But weak spark should cause backfires or at least loose of power but. Bhai said that car become fines after that.
Can be wiring or starter is taking too much load that ecu is not getting required voltages to work.

[pradeepbuss]

Yes bro good point. I will investigate about starter wiring.
Last time car start with cranking i herar some stuck noise in starter.( cranking slow and hear "grrrr" noise in starter site.

After remove distributor cap i find this. Capacitor melt.i think i need to replace it.

[Hassan1991]

Yes looks melted.
Update after checking the wiring.