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

 

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

 

yes i know there are two amps(front for 1 3 5 and rear for 2 4 6)
you can find the schematics
here:http://www.autoelectric.ru/auto/volvo/960/1993/960-93.htm

Marc

 

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..

 

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

--
Mike F.
Thornhill (near Toronto), Ont.

Replace tt with t (twice!) and remove parentheses to email me directly.
(But I check the newsgroup more often than this email address.)

 

On Tue, 05 Jul 2005 01:52:37 +0200, Tim..


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?

 

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

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).