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> Volvo 940 Wont Start No Spark, Yes I have read other forum posts
rlosiniecki
post May 20 2008, 07:20 AM
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First off yes I have tried other forum posts.

I have a 1991 Volvo 940 SE with turbo and 162,000 miles

The problem is there is no spark coming from the ignition coil. There is power going to the ignition coil but no spark. The car turns over but doesn't start.

I have replaced the crankshaft sensor and the Ignition Module. The wire that goes from the ignition module to the Ignition Coil has been replaced with a new wire that goes directly from the module to the coil (could this be the problem is it supposed to go somewhere else first?)

Also the coil has been checked and its operating within parameters.

Any Ideas?

Thanks,

Robert
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wynpro
post Jun 5 2008, 08:37 PM
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Robert,
How did you make out with you problem? I have the same problem but have not replaced the sensor yet. How difficult was it to replace the sensor? any help would be appreciated.

Andres
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rlosiniecki
post Jun 5 2008, 10:23 PM
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I have replaced the crankshaft sensor, power stage and ignition computer and no luck
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bigchap
post Jun 6 2008, 02:57 AM
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has the cam belt snapped?
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wynpro
post Jun 6 2008, 07:11 AM
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First thanks for your help, I haven't checked the Cam Belt. I'll have to look up how to check it. I am new to this, but pretty handy. I'll check it today.
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wynpro
post Jun 6 2008, 12:39 PM
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Well cam belt is not broken, this model has a flywheel pick up sensor. Wondering if anyone had any info on the best was to test this sensor. I have electronic test gear at my disposal if needed.
I have already replaces the Ign Module and coil and still get no spark from the coil.
Thanks
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dan245dl
post Jun 11 2008, 11:26 PM
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To answer the question about the crank speed sensor, it's very easy to replace. It sits on the tranny bell housing right behind the engine near the firewall. one cap nut holds it in, and once it's out, it's as easy as slipping a new one in, screwing it down and plugging it up. If i remember correctly, there was something of a dealer recall on this part...
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wynpro
post Jun 12 2008, 07:04 AM
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Dan,
Thanks very much for your info, I am in the process of looking for the flywheel sensor now. It seems to be a dealer only part around here. Is there another source maybe on-line where I could get a good deal. Much appreciated.
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yochapo
post Jun 12 2008, 10:26 AM
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Where is the power stage? Is it the little black module on the same bracket as the ignition coil. My 94 850 turns but won't start.


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zygon
post May 5 2012, 06:03 AM
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I have a 1991 940 SE turbo with the exact same problem, and cannot figure this one out. Have owned several 240's and not new to Volvo's, but these electrical issues with 740/940 don't care for.
Have power to the coil and power module.
Have replaced rpm sensor.
Have cleaned all grounds.
Have swapped out coil, power module, radio suppression relay, fuel relay, knock sensor, temp sensor, ICU & ECU with known working units, still no spark.
What other components within the circuit effect spark? Any replies or same experiences in this matter are welcome and appreciated.
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danielm85948
post May 5 2012, 06:14 AM
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QUOTE (rlosiniecki @ May 20 2008, 08:20 AM)
First off yes I have tried other forum posts.

I have a 1991 Volvo 940 SE with turbo and 162,000 miles

The problem is there is no spark coming from the ignition coil. There is power going to the ignition coil but no spark. The car turns over but doesn't start.

I have replaced the crankshaft sensor and the Ignition Module. The wire that goes from the ignition module to the Ignition Coil has been replaced with a new wire that goes directly from the module to the coil (could this be the problem is it supposed to go somewhere else first?)

Also the coil has been checked and its operating within parameters.

Any Ideas?

Thanks,

Robert

it would seem that if you have power going to the coil,but no spark from the coil then you should change the coil.
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danielm85948
post May 5 2012, 06:22 AM
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QUOTE (zygon @ May 5 2012, 07:03 AM)
I have a 1991 940 SE turbo with the exact same problem, and cannot figure this one out. Have owned several 240's and not new to Volvo's, but these electrical issues with 740/940 don't care for.
Have power to the coil and power module.
Have replaced rpm sensor.
Have cleaned all grounds.
Have swapped out coil, power module, radio suppression relay, fuel relay, knock sensor, temp sensor, ICU & ECU with known working units, still no spark.
What other components within the circuit effect spark? Any replies or same experiences in this matter are welcome and appreciated.

do you know how to get your codes, from your diagnostic plug in the engine bay, if so do that,if not just google how to get the codes on the volvo 940 for details.
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zygon
post May 5 2012, 07:06 AM
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Drives: 940, 760, 240



QUOTE (danielm85948 @ May 5 2012, 07:22 AM)
do you know how to get your codes, from your diagnostic plug in the engine bay, if so do that,if not just google how to get the codes on the volvo 940 for details.

Code 1-1-1 is coming from both socket #2 (fuel) & #6 (ignition). Also, performed (double psuh down) flashing diagnostic and ECU says it's picking up the rpm sensor. This one has me stumped?
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danielm85948
post May 5 2012, 11:36 AM
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QUOTE (zygon @ May 5 2012, 08:06 AM)
Code 1-1-1 is coming from both socket #2 (fuel) & #6 (ignition). Also, performed (double psuh down) flashing diagnostic and ECU says it's picking up the rpm sensor. This one has me stumped?

well both those codes show nothing wrong,so all the sensors are working, as is the ECU, so the next step is the ignition control module,you at the front of the car, looking in the engine bay,look about 6 inches behind the right hand headlight on the side wall of your inner wing,near the top, were your outer wing meets the inner wing,that black box bolted on is your ignition control module, just google this part,that is what you change.

This post has been edited by danielm85948: May 5 2012, 11:44 AM
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