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http://s4.zetaboards.com/lexusaltezzaclub/topic/1148393/1/#new



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Intermittently Not Starting
Topic Started: Mar 18 2012, 08:48 PM (584 Views)
Beams_KP61
Soccer Mom
[ * ]
I know that my engine is a swap and it could be a number of issues but Im stumped and I jsut dont know where to start looking. Since Ive wired it all up, 70% of the time it starts first pop. The other 30% of the time it just cranks over.

After either running or cranking if i check the error codes I get the same 3, #14/#15/#21 (igniters/oxy) so i dont think its to do with any of them. After checking I always leave the battery unconnected to clear the codes to start from scratch.

Ive have used a multimeter to check that the ecu is getting 12v to all inputs and that the earths carry connectivity to chassis / engine.

When it doesnt start I unplug the injectors to check that they get shorted to earth by the ecu and they do. I also check the plugs are sparking and they do. The later leads me to beleive crank angle is working fine or i wouldnt get spark.

To me air in + fuel + spark = go ... but only 70% of the time.

Help, i dont know what else to check.




BEAMS KP61 Starlet build
http://homepages.ihug.co.nz/~quibel/Project2c.htm

My YouTube channel
http://www.youtube.com/user/20vkp61
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Beams_KP61
Soccer Mom
[ * ]
Ive managed to get a spare set of cam sensors and an airflow meter, what other sensors should i try to get for free for testing purposes.

Q
BEAMS KP61 Starlet build
http://homepages.ihug.co.nz/~quibel/Project2c.htm

My YouTube channel
http://www.youtube.com/user/20vkp61
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greeneyes
Member Avatar
Targa Master
[ *  *  *  *  *  *  *  *  * ]
If you measure the resistances through the sensors via the computer plug & post them up, I can post up the readings I got when I did the same.

After logging all the sensor resistances I found there was nothing wrong with any of them, so I assume my readings are correct for a working unit.

A couple of errors automatically generate each time you turn the ignition on as the motor is not running at the time. I can't remember which numbers they were.
The Girl's KE70-
http://www.rollaclub.com/board/topic/42407-the-girls-ke70/
How NOT to build a rally car-
http://www.rollaclub.com/board/topic/64027...ld-a-rally-car/
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Beams_KP61
Soccer Mom
[ * ]
greeneyes - sorry for the slow delay. have been working on other facets of the car that require work and have had engine out of the bay for a bit. Hope to get it back in the hole and wired again next weekend.

Do you have a list of ones you could post for us to test against. assume you meant cam, crank, tps etc etc and did you measure against engine earth ?

Q
BEAMS KP61 Starlet build
http://homepages.ihug.co.nz/~quibel/Project2c.htm

My YouTube channel
http://www.youtube.com/user/20vkp61
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