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Volvo S40 trigger mode


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  • 1 month later...

i'm found that links G4x can't pickup any rpm from the crank sensor. the crank signal voltage just too weak and the Pull Up like not function at all. what problem could be? 

with pull up enable.jpg

no pull up.jpg

Starting map.pclx

this crank sensor got two wires
one connect to signal ground
the another wire connect to G4x trigger1

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The engine can start now by setting trigger offset to 279 which copy from the Audi TT starting map, which use exactly same timing style 60-2.
But don't why timing light can't pickup the signal, can't calibrate the timing offset, the timing light definitely working which tested on other car.
The timing light just blink randomly which irregular interval.

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use Direct spark with VW short coil dwell 2.3ms.
we used timing light by clamp on the coil wire no success, after that we remove the cop and add an old spark plug lead between the coil and spark plug but still not success.

the engine can start and idle properly


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  • 3 weeks later...

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