92 960 ignition problem

Jul 02, 2005 7 Replies
M
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


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M

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

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M

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

formatting link

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T

"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..

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M

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

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M

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?

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T

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

Tim..

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P

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)" >

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