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Old 04-16-2021, 08:35 AM   #1
foggyjames
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Default 240 Renix/Bendix crank sensor

Hi All!

A friend was in touch a few days ago asking if I knew where to get a replacement for a fairly rare crank angle sensor for a 240 with Bendix / Renix ignition. I think it may have been only on B230Ks, and only for a short period of time (87-ish?). Part number is 1389357.

A couple of threads from other forums suggesting it's a dead-end:
https://www.volvoforums.org.uk/showthread.php?t=553
https://www.volvokv.nl/forum/ontstek...dix-ontsteking (Chrome will translate, if you need it!)

I'm a bit rusty on which ignition systems made it to the US, but I know some had Regina (which I don't think Europe got), although that is probably a different timing pickup again.

I'm pretty much out of inspiration, and at the point of suggesting either:
a) Adapting a 300-series Renix sensor bracket to fit
b) Fitting EZK and a dizzy pickup from a 240 from a slightly different era.

Anyone got any further bright ideas?

cheers

James
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Old 04-16-2021, 01:16 PM   #2
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Where does it read the signal from? 60-2 ring on the flywheel like LH2.4 sensors or somewhere else?

Any chance of maybe getting a scope on a working one to see what signal it puts out?

I bet with enough information you could find a generic part which generates a similar enough signal that the ignition doesn't notice. Or make a little converter board for a sensor which is "close" but has wrong voltage or waveform. Either way some pain and manufacturing would be in order.

If you can get the nonfunctional part photographed for any identifying marks (non-Volvo part number, etc) that may also help. Or if you can confirm the 300 series is the same sensor type with a different shape. (It would almost certainly be the case if the same ignition computer is used.)
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Old 04-16-2021, 01:31 PM   #3
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Thanks for getting back to me.

Yeah, it'll just be a regular VR sensor. Yes, it reads the flywheel (LH2.4-style), but being Renix/Bendix almost certainly with a 44-4 (or 44-2-2, depending on how you want to describe it) pattern.

I'm supposed to be getting a photo of the system (whether or not he will have removed the sensor, I don't know) at some point, but I haven't got it yet.

I suspect the 300 series sensor is electrically compatible, and may well have the same connector (and there is a redblock version of that, of course), but I suspect the manner in which it mounts to the bellhousing is different, as 360s didn't have a normal M4x bellhousing. That might be his best route, though - get a 360 sensor and adapt the mounting bracket. I don't know how up for that he'd be for that level of custom work, though. That approach seems like it gives us a head start over using a generic sensor and/or having to work on a board to make it signal-compatible.

I guess the main question I have is does anyone have a magic source for the original part?

cheers

James
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Old 04-16-2021, 01:59 PM   #4
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Your best bet will probably be locating the non Volvo part number for the item then.
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Old 04-16-2021, 02:18 PM   #5
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Volvo used the same VR sensor on Rex/Regina as they did for LH2.4. So your other path may be to adapt the bougicord sensor from a 240 with LH2.4 if it is a VR sensor.
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Old 04-16-2021, 02:52 PM   #6
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I found some used ones in Denmark if you are interested.
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Old 04-16-2021, 07:35 PM   #7
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Please post the pictures when you get them, especially the mounting bolt(s?) going into the engine bellhousing(?). Do you know if the connector is 2-pin or 3-pin?

As you've said, the sensor will be a VR type, which needs 2 wires. The LH2.4 CPS assembly adds a 3rd grounded shield wire to reduce electrical noise. If the original is a 2-pin connector, you can skip the shield wire. If the other 2 wires are swapped, it will run but may be a bit erratic and timing will be shifted by half a tooth (4 deg for a 44-tooth wheel) -verify that you have the correct wiring with a timing light at idle.
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Old 04-16-2021, 09:59 PM   #8
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271949 (1389399) is the only replacement part listed for all 700 series Regina Rex, same PN as LH2.4/EZK - what was the difference with the 1389357 version?

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Old 04-16-2021, 10:51 PM   #9
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Quote:
Originally Posted by bobxyz View Post
mounting bolt(s?)
"It is mounted using 2 bolts which are screwed horizontally into the flywheel housing..."

"I was also told that you had to drop the box to change it so I opted for another solution which my local Volvo Independent specialist suggested, which was to fit a distributor from a low mileage donor car which had old fashioned CB points. It was interchangeable with the existing distributor (apart from different rotor arm) but requires a standard coil pus rewiring of the LT circuit. Fitted with new points, condenser, coil HT lead and timing adjusted, the car starts first time every time and runs fine."
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Old 04-16-2021, 11:02 PM   #10
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23 June 2016

I've made the decision. The sensor (1389357) was not available and if I could have found it, it could hardly be replaced without major conditions. So the 123-ignition in it with a new ignition coil in it because of the necessary resistance of at least 1 ohm. The old distributor is not mentioned in the list of 123-ignition, but that of ignition is exactly the same. There was no specific ignition curve listed for the B230K engine but I opted for the C curve, which seemed the closest. Installation, adjustment and connection was easy, most of the work was transferring the gear.

Start and run! The engine runs fine and pulls better than on the old ignition. So fine so far.
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Old 04-17-2021, 03:56 AM   #11
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Quote:
Originally Posted by 84B23F View Post
I was also told that you had to drop the box to change it
Just a quick note, some of the other threads have people saying they were able to successfully remove it without removing the transmission by using box end wrenches, a lot of patience and a magnet on a stick to get the loosened bolts out.
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Old 04-17-2021, 12:22 PM   #12
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Quote:
Originally Posted by foggyjames View Post
rare crank angle sensor for a 240 with Bendix / Renix ignition. B230Ks
Pull the sucker out, and compare to the one used in 89 onward.

Check diameter and length to where it seats...report back with pics
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Old 04-19-2021, 07:46 AM   #13
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Thanks all - sorry, I was away for a couple of days.

I think I have alternative (but more of a PITA) solutions well in hand - but thanks for your thoughts. The main question was if US models had this type (and potentially more commonly than in Europe), and/or did anyone know of a magic source for that PN which Google didn't. Bit of a long-shot, but worth a try.

Good info about Regina using the same sensor as LH2.4 - thanks!

Getting pics is a little tricky, as this is a friend-of-a-friend situation, but I am due some pics at some point.

I'll let you know how I get on. Thanks again, all!

cheers

James
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Old 04-19-2021, 10:52 AM   #14
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Quote:
Originally Posted by foggyjames View Post
a magic source for that PN

Question is, what does this CPS look like...did it look like THIS? And mount like THIS?

For 1987-1990 Jeep Wrangler Crank Position Sensor

Renix (Renix Electronique) was a joint venture by Renault and Bendix that designed and manufactured automobile electronic ignitions, fuel injection systems, electronic automatic transmission controls, and various engine sensors. Major applications included various Renault and Volvo vehicles. The name became synonymous in the U.S. with the computer and fuel injection system used on the AMC/Jeep 2.5 L I4 and 4.0 L I6 engines.
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Old 04-19-2021, 01:29 PM   #15
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That is, currently, what I don't know, sadly.

The links you posted are pretty much exactly what a 300 series sensor looks like, though, which is interesting - as if that were a standard Renix part. I suspect the 340's use of Renault engines was Volvo's first route into Renix ignition. There's a redblock version (from the 360), but it uses a unique bellhousing. You couldn't mount a 360 sensor to the block, like an LH car, and I don't think the mounting lugs are there on an M4x/AW71. I'm curious about how the original part mounts - is there an adaptor, or is it a specially packaged version of the Renix sensor? I will chase the guy up tomorrow for photos.

If it comes to hacking something else in, I think we have that in hand - either by adjusting the mounting method for a 300 series sensor, or using a wiring adaptor on the end of an LH sensor.

cheers

James
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Old 04-19-2021, 08:09 PM   #16
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Quote:
Originally Posted by foggyjames View Post
That is, currently, what I don't know, sadly.
Google search, but I have no idea which ICU unit is being used HERE. If a prompt comes up, do not click on OK...click on the X in upper right.

Here is the PIC, and item 18 is suppose to be the impulse sender (1389357). Site suggests it can be ordered.
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Old 04-20-2021, 12:50 PM   #17
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Yes, I found that site yesterday. Looks like a parts drawing from VADIS/VIDA. If you try to add to cart, though, it doesn't find it. A bit weird! There are various places claiming to be able to supply the original part, but an equal number of reports of people who have placed orders only to have them credited later when they can't actually get the parts.

The diagram appears to show a separate coil, computer, MAP sensor, etc, whereas a Renix system has all of that on one module. It'll be interesting to see what is in these pictures when they come through.

I spoke to the guy again today. He's not the most tech-savvy, but is working on getting me pics of the sensor and its mounting to the bellhousing. I've already said to him that it's not looking good, and we are probably looking at either adapting the mounting for a Renix sensor or fitting a completely different ignition system. He says he's actually managed to get the car running by manipulating the cable coming out of the sensor, which suggests potential wiring delay rather than a weak sensor (low output being the usual failure mode for VR sensors), but he's aware that a spare is needed.

cheers

James
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Old 04-20-2021, 01:22 PM   #18
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Quote:
Originally Posted by foggyjames View Post
but he's aware that a spare is needed.
US's Part number is 73519MM...I found one US site that has it, and ships internationally...eBayer also ships to UK.

If an UK Jeep dealer exists, I'd try there first. 1987-1990 Jeep Wrangler
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Old 04-20-2021, 01:48 PM   #19
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We're pretty sure the mounting is different to the Jeep (and Volvo 300 series) part, though. The pictures should tell all, hopefully.

Yeah, we got Jeeps - but there will be loads of options for "a Renix sensor" on eBay, as they were all over Renaults. He sounded potentially up for adapting the mounting bracket when I spoke to him earlier, so that might be a good route ahead.

cheers

James
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