92 960 ignition problem

  • Thread starter Thread starter marc a k.be>
  • Start date Start date
M

marc a k.be>

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
 
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..
Click to expand...

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
 
marc a k.be> (r) (c) said:
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
Click to expand...

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..
 
Tim.. said:
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..
Click to expand...

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?
 
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).
 
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