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The mkiv Supra Owners Club

my engine wont start got no spark


Guest chufts2jz

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Guest chufts2jz

hi there ive got a problem with my car I have no spark ive had the ecu checked and hav brought a new igniter unit the spark plugs are new is there any sensors that would stop it from sparking any help would be great thanks. paul

Edited by chufts2jz (see edit history)
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Guest chufts2jz

sorry it is a 2jz gte il have a look tommorow and see if the sensor is unplugged thanks again

 

- - - Updated - - -

 

sorry it is a 2jz gte il have a look tommorow and see if the sensor is unplugged thanks again

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This happened to me and it was the crank sensor. The plug is above the alternator. First thing is to check where the sensor is fitted that the bolt holding it on hasn't come lose. Then if that and the plug is good. You can disconnect the plug and cont check it with a multi meter. Should be something like 1000ish ohms iirc. Mine was open circuit. The new sensor was £114 fixed it straight away :)

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crank sensor is the main one to check here, I'd be checking resistance and making sure it's within' tolerance of the factory spec

 

without a signal from the crank sensor the ecu won't know when to send spark,

 

you may also find (not 100% sure if a 2j is the same as a 1j) but one of the two cam sensor's may have an issue

 

I had broken wiring on my rear cam sensor plug as the heat generated in that small space over the years made the wire go hard and snap, I was not getting fuel because of this,

 

someone told me one cam sensor does fuel, one does spark, so it's also maybe worth trying those

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Guest chufts2jz

hi there i checked the crank sensor this weekend and it was reading 1400 ohms is this correct any help would be great please. thanks

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Guest chufts2jz

hi there i checked it by putting my tester onto the connector plug terminals that is connected to the sensor not the ecu wire side. do you mean for me to check the connection from the ecu loom side of the sensor. thanks

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