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92 960 ignition problem

92 960 328000km(about 200000m)bi-fuel(lpg gas/petrol)

no spark on cylinder #2 have exchanged from running other 92 960 :

ecu,coil,amplifier module,flywheel sensor,cam sensor,sparkplug

have checked wires from ecu to amp on manifold,amp to coil all ok

14v on coil with running engine also enough power to light up a 21w bulb

checked signal on ecu for plug #2(wire #13) and nothing all others ok

i have soldered a wire directly on the pcb to check the signal,but its to dark now and my flashlight just died,so i will check that tomorrow

any help is welcome

marc

Reply to
marc a k.be>
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ground at ignition amp ok because the two other cylinders work

no break in the wires,same result when i measure resistance between ground and pin 13 with no ecu present on both cars

Marc

Reply to
marc a k.be>

yes i know there are two amps(front for 1 3 5 and rear for 2 4 6) you can find the schematics here:

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Reply to
marc a k.be>

"marc a k.be> (r) (c)" 92 960 328000km(about 200000m)bi-fuel(lpg gas/petrol)

If I understand you correctly, you have +12v and ground at the ignition amp, but you have no LT trigger signal from the ECU??

If you have swapped the ECU for a known working one and still no LT to plug

2 then you must have a break in the signal wire between ECU and amp???

Tim..

Reply to
Tim..

And you know there's 2 amplifier modules and IIRC the rear one does the front cylinders?

Reply to
Mike F

only 740 and 960 unfortunately i could use the schematics of a 70 series too since my brother bought a c70 nothing is wrong yet,but how long will that last?

Reply to
marc a k.be>

How / is there an schematic of the 70 series cars on that site? I cant read russian!

Tim..

Reply to
Tim..

Have you tried the Chilton manual number 72302? Available from IPD and probably most high street motor accessory shops.

All the best, Peter.

700/900/90 Register Keeper, Volvo Owners Club (UK).

"marc a k.be> (r) (c)" >

Reply to
Peter K L Milnes

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