Cheers.
B230et rebuild.
B230et rebuild.
My summer project. To rebuild this engine and work out how all the electrics work. I'm going to need a lot of help as it is my first engine rebuild but I want this in my 360. The engine has 129,000 miles and is a 1989 so I expect to upgrade to the 13mm conrods from the ft. We will see. Have to get my car on the road before I do this but any info and advice gratefully recieved in the meantime.
Cheers.
Cheers.
Re: B230et rebuild.
Did it come with the motronic power stage? I can't see it amongst the loom, it is this black box.
The 13mm rods come up on ebay occassionally for circa £80, it might be worth contacting these guys as they have had a few auctions for them http://www.ebay.co.uk/usr/performancepartsandcoatingsuk
The 13mm rods come up on ebay occassionally for circa £80, it might be worth contacting these guys as they have had a few auctions for them http://www.ebay.co.uk/usr/performancepartsandcoatingsuk
Re: B230et rebuild.
No, don't see that unit anywhere. Perhaps he still has it. Will contact him tomorrow. Worryingly, I have just had a proper look at the wiring loom. There is no connector for the jetronic box either. Bugger, I hope he still has these bits.
Will look for the rods but for now I have my eye on an intermediate shaft from a volvo penta aq151c marine engine. It has the gear I need to convert to block dizzy. Not sure if it will fit but it looks the same as the B23 one and I am going to get him to measure it up. Will whip out mine at the weekend sometime for comparison measurements. That is a big one out of the way if it does fit. Or maybe I'll get lucky and find a gear in mine but I doubt it.
Will look for the rods but for now I have my eye on an intermediate shaft from a volvo penta aq151c marine engine. It has the gear I need to convert to block dizzy. Not sure if it will fit but it looks the same as the B23 one and I am going to get him to measure it up. Will whip out mine at the weekend sometime for comparison measurements. That is a big one out of the way if it does fit. Or maybe I'll get lucky and find a gear in mine but I doubt it.
Re: B230et rebuild.
There's no jetronic box only the motronic ECU, motronic power stage, motronic relay and CIS distribution unit (not too sure what that is). If you pm me your email I will send you pics of the loom when I get around to removing it from the 760, if he doesn't have the power stage let me know and I will see what I can do as I know someone who might have one.
Here's the wiring diagram I've been using
http://www.volvoclub.org.uk/tech/fuel_i ... 89-2.shtml
Here's the wiring diagram I've been using
http://www.volvoclub.org.uk/tech/fuel_i ... 89-2.shtml
Re: B230et rebuild.
You can take any intermediate shaft of a 360 or 240, doesn't have to cost much then.
Re: B230et rebuild.
Just remembered the CIS is constant idle system, which is also the black box which is the motronic relay, it powers the whole ECU system and does constant idle also on the 760 it is the plug for the headlights etc.
Re: B230et rebuild.
OK, here is what I have.
Jetronic module?
Motronic power stage plug, no module. Ballast resistor. Other 5 are injectors and dash water temp sender?
Blue is cold start injector, black, water temp for ecu? No idea on the 2 big block connectors.
Big block, constant idle and motronic relay connectors but also washers, headlight wipers etc. The cut wires should have a large ecu plug, (white) on it. Meh! The two red ones I haven't identified yet.
Not identified yet.
I'm guessing this is the battery, maf? throttle position and what not. Haven't really started looking at this yet.
Then I have 2 loose bits of wiring.
Looks like I have a spaghetti headache to come. Woo hoo!
Jetronic module?
Motronic power stage plug, no module. Ballast resistor. Other 5 are injectors and dash water temp sender?
Blue is cold start injector, black, water temp for ecu? No idea on the 2 big block connectors.
Big block, constant idle and motronic relay connectors but also washers, headlight wipers etc. The cut wires should have a large ecu plug, (white) on it. Meh! The two red ones I haven't identified yet.
Not identified yet.
I'm guessing this is the battery, maf? throttle position and what not. Haven't really started looking at this yet.
Then I have 2 loose bits of wiring.
Looks like I have a spaghetti headache to come. Woo hoo!
Re: B230et rebuild.
Yep that round grey 2 pin plug is the water temp sender for the dash, the black connector you are correct is the water temp for the ecu and there should also be a single white pin connector for the water temp for the constant idle system (atleast that's what I was told).
I had to double check but I was right that is an LH2.4 ecu or EZK so nothing to do with motronic, you could probably sell that.
The thick red wire with the round lug on it is the 12V+ feed which goes on the back of your alternator and there should be a spade connector with a green and green/blue wire which also goes on to the back of the alternator and is the charge light for the dash.
The two big block connectors join the loom from behind the dash and drivers footwell to the engine bay loom, there will be corresponding plugs on your engine bay loom.
The constant idle box if you are missing it you can fit a manual constant idle system and wire in a relay but you would be best giving Matt (Dai's brother) a call on the number I sent you and see if he still has his breaking 740 B230ET and get all the bits that are missing.
That pic shows the plug for the two sensors on the back of the engine, one reads TDC and the other I believe reads the teeth on the flywheel?
AFM plug
Blue wire goes to the coil, and those two connectors join to the two connectors on the loom from inside the footwell/dashboard.
That's the best picture I could find, the small blue plug and the grey plug to the left of it with three holes and the grey plug just visible to the right of the blue plug are for wipers and lights so can be cut off.
In your picture with the blue wire and a black wire with a white round plug, I believe the plug is for the oil pressure light. I can't see what is fitted to the end of the blue wire but I don't remember seeing it so will have to look into that one.
I can't really see what is what in the last 3 pics so wouldn't like to comment incase I give you incorrect info.
Hopefully some of this post will be useful
I had to double check but I was right that is an LH2.4 ecu or EZK so nothing to do with motronic, you could probably sell that.
The thick red wire with the round lug on it is the 12V+ feed which goes on the back of your alternator and there should be a spade connector with a green and green/blue wire which also goes on to the back of the alternator and is the charge light for the dash.
The two big block connectors join the loom from behind the dash and drivers footwell to the engine bay loom, there will be corresponding plugs on your engine bay loom.
The constant idle box if you are missing it you can fit a manual constant idle system and wire in a relay but you would be best giving Matt (Dai's brother) a call on the number I sent you and see if he still has his breaking 740 B230ET and get all the bits that are missing.
That pic shows the plug for the two sensors on the back of the engine, one reads TDC and the other I believe reads the teeth on the flywheel?
AFM plug
Blue wire goes to the coil, and those two connectors join to the two connectors on the loom from inside the footwell/dashboard.
That's the best picture I could find, the small blue plug and the grey plug to the left of it with three holes and the grey plug just visible to the right of the blue plug are for wipers and lights so can be cut off.
In your picture with the blue wire and a black wire with a white round plug, I believe the plug is for the oil pressure light. I can't see what is fitted to the end of the blue wire but I don't remember seeing it so will have to look into that one.
I can't really see what is what in the last 3 pics so wouldn't like to comment incase I give you incorrect info.
Hopefully some of this post will be useful
Last edited by 360beast on 26 Mar 2014 04:54 pm, edited 1 time in total.
Re: B230et rebuild.
Perhaps those two thick red wires with the spade connectors go to the coil?
Do you have the coil? The motronic system doesn't have an ignition module as the ignition runs off the coil.
Do you have the coil? The motronic system doesn't have an ignition module as the ignition runs off the coil.
Re: B230et rebuild.
http://www.ecuelectronics.co.uk/volvo-e ... rrencyId=2
Would this be the correct one?
No coil either, wish I had done some research before buying this. Arrgh!
Would this be the correct one?
No coil either, wish I had done some research before buying this. Arrgh!
Re: B230et rebuild.
Yep that's the correct Motronic ECU, you can see it in two photos I posted.
Re: B230et rebuild.
@360beast
That big silver plug in the foreground of the pic you posted looks suspiciously like it would plug into something like this jetronic module. Any idea what it is for?
That big silver plug in the foreground of the pic you posted looks suspiciously like it would plug into something like this jetronic module. Any idea what it is for?
Re: B230et rebuild.
That's plugs into the motronic ecu
Re: B230et rebuild.
Ah,
I get it.
So, there is a grey motronic ecu AND a black power phase?
A bit of good news. I phoned the guy I got the engine off and his brother has a 2.4 engine in the same shed, it looks like he has picked up the wrong box is all. Hopefully he will get back to me later today to let me know if he turns up the right box. He is a decent fella, I've a good eye for chancers and he isn't one. Perhaps will be all sorted as soon as tonight.
Appreciate the help you are giving on this 360beast.
I get it.
So, there is a grey motronic ecu AND a black power phase?
A bit of good news. I phoned the guy I got the engine off and his brother has a 2.4 engine in the same shed, it looks like he has picked up the wrong box is all. Hopefully he will get back to me later today to let me know if he turns up the right box. He is a decent fella, I've a good eye for chancers and he isn't one. Perhaps will be all sorted as soon as tonight.
Appreciate the help you are giving on this 360beast.
Re: B230et rebuild.
No worries Number47 
Yep there's the ECU, then there's the black box (motronic power stage) in the engine bay
You can just see it at the top right of this picture, tucked down by the wing.
Then there's another box which is in the drivers footwell above the ECU which is for the lights etc but it's more importantly the relay to power the system and the constant idle system.
This box is for the plug from your picture you posted
So in total you need 3 ECUs
Yep there's the ECU, then there's the black box (motronic power stage) in the engine bay
You can just see it at the top right of this picture, tucked down by the wing.
Then there's another box which is in the drivers footwell above the ECU which is for the lights etc but it's more importantly the relay to power the system and the constant idle system.
This box is for the plug from your picture you posted
So in total you need 3 ECUs