E30 Zone

injector disable, joined by your LPG ECU until you switchover to LPG, when it will disconnect (unjoin them) to disable your injectors. If you are removing the complete LPG install (why?) then you will need to join these together.

rubber pipe goes from vaporiser to mixer via stepper, but try and get the stepper nearer to the mixer end to give better response times on the closed loop. That "T" looks like a power valve which you probably wont need with a stepper / leonardo etc... You should try and have curves in the LPG pipe t...

It is in that location on my 320 touring, left hand boot flap, just above viewable level, near the rear washer fluid bottle...

Service indicator takes a signal from the time clock,from the speedo,from the tacho,from the temp. gauge and the milometer.Computes these to decide when each light goes out.In this way,if you drive at moderate speeds until your engine warms through,have few cold starts,keep below 4200rpm your green...

The input the the TPS is actually 5v IIRC as the ECU generates 5v for all sensors to ensure it is not affected by battery voltage rise and fall (probably an 7805 or similar). I was thinking about trying to create a small circuit that takes the idle and WOT signals from the switch and generates a 0v,...

Does anyone know what the best plugs are for LPG converted m20b20 engines? I have BPR6ES (i think) atm but they look fairly crusty...

so boiling a battery by charging it with a fork lift charger is not reccommended? ;)

no when the batter is conntected it wont start there is nothing not even a click from the starter motor but when i quickley tap the termals together on the battery it trys 2 turn over ? did you short the battery out or join the battery to the starter motor with a jump lead? I hope the latter... Try...

Hi Guys, I have been working on my E30 recently and am nearly finished but two problems still remain. Firstly the starter used to misengage regularly, upon removign it I found it only had the lower bolt installed and was loose. I have no idea how to fit the top bolt as it is inaccessable from the re...

sounds more like the starter or immobiliser. measure the battery voltage while trying to crank, if it drops to <8v then its the battery, my guess is it wont though.

It is incredible how, not so much the weight, but position of an object makes a difference in a car. The battery tray is by the firewall normall, hence within the wheelbase, but the tray in the boot is behind the rear axle. This shift of location makes an incredible difference, many times the weight...

Hi, Two main things to check, whip the relay out from the drivers footwell and pop the cover off it to check the thermal fuse in the lower left corner. If a small metal strip has come away then it has overheated and popped its fuse. very common. Also check for power at the red / white wire as this w...

Heh, I just pulled the plugs on mine and they are BPR6ES's - which annoyed me as I have a box with 80 brand new BR5ESs which are identical except they dont have a protruding electrode....

Default on mine is 85 - 90 ish. It varies depending on your vapoirser setup though.

The ideal way to set up a Leonardo is to replace the stepper motor with a 'power valve' (as used in open loop LPG systems), and adjust things so that it works properly with this. When this has been achieved, just remove the power valve and fit the stepper valve back in. LPG level gauges can usually...

Oh and zetecs hate lpg... In what respect?? Don't like running on it? Or valve seat issues? .....And like I said the other evening.... Another bairn on the way is just the excuse you need to get a 325i Touring to put the gas on. I've a 406 chipfat turbo lined up to replace the 306. I can only have ...

that kit is fine for a 325, you wont actually need the AEB160 which is an injector emulator. You will need a switch for the AEB175 / leonardo. The switch contains a PIC Microprocessor communicating to the leonardo over a serial link (spi at a guess) hence cant easily be bodged unfortuantly... You wi...

my guess is either plugs or ECU. Try to be more specific in the subject line, most people skim over threads titled with non specific names...

scrap yard? £10 - £15 will almost certainly buy a complete in tank unit, as opposed to just the pump... Or is it a in line pump?

Incidently, I wires my lambdas heater via a relay to perminant live, the relay triggered with the blue wire from the leonardo, too much of a tidy mind to have the lambda burning away for no reason on petrol... Also, does anyone know if there is a benefit in wiring the lambdas signal to the motronic ...

I have to say that while a good single point LPG system can be unnoticable in drivability it is, in my experiance, more prone to "running like a dog". Mine sometimes runs really nicely, and other times stalls at every set of traffic lights. I am almost 100% certain that is down to the vaporiser, but...

this may help with the cable:
http://www.spacevista.afreeweb.info/cable/
fuel overlap phase is normally ~ 2 - 4 seconds
it should still join the two yellows if the switch is in petrol mode.

spotted this on the bay a while ago, if you have issues with the one you have ordered, and no, I am not the seller! http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&ssPageName=STRK:MEWAX:IT&item=170280267529 The yellow wires should in theroy be joined when the leonardo is powered down, pop the case a...

silly point, but mine had a strange ticking which turned out to be one of the bbs wheel centers loose and bobbing about when cruising at low speed... Dont overlook the obvious...

The main window feed can come from two places, and it is decided where it will get the power from by a relay which is energised with the interior lights (via a separae take off from the drivers door light switch.) I have a funny feeling there is two fuses for the windows, ign off and ign on. CHeck t...

http://www.opel-scanner.com/files/DME_1.1_1.3. pdf

found as citing 10 on here:

http://en.wikipedia.org/wiki/Motronic

very good read...

interestingly the ICV in the motronic spec says "fail safe". how they can say that when it is not spring return is beyond me, but yeah, it is definantly as you described : basic and open loop.

My install crossed the silencer right at the back where it is coldest So you came out under the wheel well and above the heat shield of exhaust or over the exhaust pipe tips by the rear bumber? Cheers pretty much, it folowed the blue route exactly except it didnt do that peak over the diff, just ov...

out of interest does anyone know what resistance the blue sensor should be at hot temp and cold temp as I am not sure if mine is doing its thing, though I know the value does change...

that picture is brilliant.

My install crossed the silencer right at the back where it is coldest, then over the swinging arm thus following th fuel and brake pipes (alot of zip ties) to the engine bay. I wanted it to be on the side that doesnt have the exhaust manifold

can be done easily, locate ECU pin 15. Tap this pin and connect it to a small 5w 12v bulb (instrument bulb). Connect the other side of that bulb to 12v live. On igniton the bulb will light and will work as per the american spec. Stomp test will work through it. I have cut a small shave off the wire ...

the blue temp sensor is a NTC type thermistor, thus the hotter the engine, the lower(?) the resistance. Putting a resistor in parallel with the sensor will bias it, the ECU will think the engine is hot when it is not (or hotter anyway) (and very hot when it is hot). I am not sure of the curve for th...

On my 88 320i the ICV shuts on ignition (you can hear it buzz) and opens when cranking. It is a modulating spring return valve I believe, thus the ECU can (I think) adjust it for a smooth idle / tickover. That said the tickover on mine is awful, barely 600rpm when hot and just 800rpm when cold. On L...

the black plastic plug types should just pull out (the bulb part that is) they are very common on instrumentation. This illuminates the buttons with the instrumentation lighting. The white slide out bit illuminates the lcd display and is prone to failiure. I replaced mine with LEDs and it lasted abo...

what? I thought you would be in it for the environment?
seriously though, LPG is still 55p/l and petrol 99.9p/l so a fair difference...

persevere with it, its gaining in popularity thus will increase the value of your car...

does a 325 throttle body fit straight onto the 320 inlet manifold? I know it has a bigger (70mm) inlet thus a different hose is needed...

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Re: removing lpg

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Re: Check control problem

Re: what do the service lights mean

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Re: Spark plugs

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Re: starting problem ?

How to fit a starter and Stalling at idle / low tickover

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Re: 325 battery location?

Re: Central Locking solenoids location

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Re: Dead Fuel Pump

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Re: weird knocking noise

Re: electric windows only work when door's open?

Re: What does the Wide Open Throttle switch do?

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Re: Over-fuelling When Cold

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Re: Self Diagnostic??

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Re: Bulb in back of OBC

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Re: 320 chip upgrade