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The mkiv Supra Owners Club

No spark- help !


ardasaliah

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So it can be two things- Crank sensor or Ignitor pack- is there anything else I should check?

 

Just a thought can the ECU detect a failed crank sensor while the car does not fire up if you see what I mean. When does the ecu pick up faults? can it detect it while on ignition 2 setting just before the starter kicks in - I have no codes stored.

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Can you hear the fuel pump when ignition is first switched on ?

Does the engine light illuminate when the ignition is on ?

 

Yep the fuel pump does prime and all the light illuminate. The battery is fine as i charged it over night.

 

The problem started when I fired her up ran for about a 2 seconds and then cut out. No more spark.

 

I will see if I can check the sensors with an ohmeter (sp) I have no spark on any of the plugs-

 

 

 

It could be the following-

 

1) crank sensor (no code stored

2) Camshaft sensor x2 (no code stored) -would this cause a total lost of spark?

 

3) Ignitor (if the ignitor packs up it is not registered by the ECU so I am thinking this might be the problem

 

HELP!

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So it can be two things- Crank sensor or Ignitor pack- is there anything else I should check?

 

Just a thought can the ECU detect a failed crank sensor while the car does not fire up if you see what I mean. When does the ecu pick up faults? can it detect it while on ignition 2 setting just before the starter kicks in - I have no codes stored.

 

? anyone know the answer to this?

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Mine was like this last winter when I was waiting to get my eyes done. Turned out to be Optimax which had gone completely off over the 4 month period. I took a lot of convincing that was the prob but it was. Put in a can of octane booster and away she went, bit rough to begion with but a couple of miles and she was fine

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Mine was like this last winter when I was waiting to get my eyes done. Turned out to be Optimax which had gone completely off over the 4 month period. I took a lot of convincing that was the prob but it was. Put in a can of octane booster and away she went, bit rough to begion with but a couple of miles and she was fine

 

Thanks - but i am reluctant to think this is the case- as I atually have no spark at the coils. The fuel condition will have no affect on wheather a car sparks or not.

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Take a look in the "Club Downloads" section. Look in the "Engine" thread and you will see "Diagnostic test procedures" or something similar. Follow the guide for igniton system, that should point you in the right direction.

 

A failed Crank Sensor should put the MIL light on. Does your MIL light illuminate when you switch on the ignition?

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Take a look in the "Club Downloads" section. Look in the "Engine" thread and you will see "Diagnostic test procedures" or something similar. Follow the guide for igniton system, that should point you in the right direction.

 

A failed Crank Sensor should put the MIL light on. Does your MIL light illuminate when you switch on the ignition?

 

Checked for codes. No codes stored- the mil light just flashes continuosly indicating no code.

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the plug for the crank sensor has two wires and the connecter plug is attached to the drivers side chassis leg front side (grey one) how did you check for no spark? did you remove the coil packs and made sure to ground the metal body of the plug to earth?

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