I have a 1992 kr verada ei wagon, over the years we've replaced every possible part except the computer, what the car does is as I'm driving along it just dies, then starts itself, dies again, starts again, sometimes it does it once or twice and is then fine, and other times it's impossible to drive, 3 weeks ago it finally decided to be at it's worse, took me 3 nights to get it home (about 5 minutes away) if I let it sit overnight or all day it would start, go for about a minute or 2 then stop completely, now it won't start at all, turned over, ran sometimes for 5 mins then started the on off thing and stops again, any advice would be greatly appreciated as I love this car, have had it from new, holds sentimental value and I just want it back, I have been told that a normal 92 magna computer won't work? does anyone know if this is true? all help would be greatly appreciated :)

Hi Joan,

I'm new (and female) and I don't know much to be able to help you but I'm sure someone will give u some advice soon. Have u looked for a 2nd hand one from a wrecker? It's an oldish car now so I wouldn't think it would cost too much. If u call a few Mitsubishi dealers they will tell u for sure whether a magna one will work or not. I've been told there is a big Mitsubishi wrecker just down the road from me called Mits Spares http://www.mitspares.com.au/ and if u needed I could go & pick it up and post for u if u are desperate. The best option is to wait for advice from the guys bc the owner of the forum is a Mitsubishi genius and he also has a wrecking business (and his stuff is all immaculate). It's called Mits-Fix and he is also on Facebook and it's in the forum under Sponsors. Also check the For sale section as I found a car in their that is a match for mine for parts. Wishing u well, Pom

Joany,
have you ruled out problems in the ignition transistor/coil area of the car?
rumpfy

thanks pom, I haven't had much help as yet, hope there are more suggestions soon,

my name's Joanne btw lol, not getting many replies as yet :(
Hi Joan,

I'm new (and female) and I don't know much to be able to help you but I'm sure someone will give u some advice soon. Have u looked for a 2nd hand one from a wrecker? It's an oldish car now so I wouldn't think it would cost too much. If u call a few Mitsubishi dealers they will tell u for sure whether a magna one will work or not. I've been told there is a big Mitsubishi wrecker just down the road from me called Mits Spares http://www.mitspares.com.au/ and if u needed I could go & pick it up and post for u if u are desperate. The best option is to wait for advice from the guys bc the owner of the forum is a Mitsubishi genius and he also has a wrecking business (and his stuff is all immaculate). It's called Mits-Fix and he is also on Facebook and it's in the forum under Sponsors. Also check the For sale section as I found a car in their that is a match for mine for parts. Wishing u well, Pom

Usually is the fuel pump / ecu relay under glove box

Also any second gen v6 ecu will work

my ex tells me that the fuel pump has been replaced along with the coil, he said that he's replaced the crank angel / top dead centre sensor that lives inside the distributor, i'ts had 4 over the years , it does fix it but why would it keep doing the same thing over and over?

That's very strange. It might be getting covered in oil, but im not sure how.
This shows how the sensor works internally. It uses light.

https://www.dropbox.com/s/xmwkc6m7gt9leyr/crankangle.png

buggered if I know :( the post you put up is for a 4 cyl, is it the same for a v6?

Doesnt seem as if there is a diagnosis yet.
Not sure if you are saying the bus now goes cos the crank angle sensor has been replaced (AGAIN?) or whether the bus doesnt go even tho the crank angle sensor has been replaced.
The crank angle sensor, according to the manual, is a HALL EFFECT device. The HALL effect is a MAGNETIC field effect. So the device is not optical, but magnetic, and should be stable against dirt and heat. The Hall effect device itself needs to be operated correctly by the design of the computer unit, and it is possible that there may be a problem with the drive circuitry for the Hall effect device being somewhat marginal due to manufacturing tolerances or ageing of some of the components. If this is what is happening, it may be worthwhile to try another engine ECU unit. Presumably the engine ECU is the original and never been changed?
Hope this clarifies some things.
Rumpfy.
ps. seeing yr ex can get the beast going, maybe twould be good to get the ex involved lol

Hi, we haven't put in another sensor yet, he's coming down next weekend to do it :) I think I'd like to try an ecu as well but he's adamant that just any old one won't fit :( not sure where he got his info from? what do others on here think?

any gen2 v6 will work as mal said post 6 . i would be making sure it getting fuel. pump may be fine the relay may have died .

@Rumfy The V6 models do in fact use LIGHT DIODES. The link i gave explains how 4 cyl sensors work, but the pictures are for V6 models. Here is the rest of the page
https://www.dropbox.com/s/e8on1z7so946t5l/crankanglev6.png

Thanks for that Van.
The main point I think is the tolerancing/ageing of electronic components. This can allow a marginal set of components to give unreliable results. In this case it seems that the changing of the crank angle sensor seems to fix the problem "until next time". But it might be the mating unit which is really the trouble. Without doing an engimeering analysis of the thing, it may make sense to try the computer (in this case).
It would be interesting to know why the different models used different systems. Hall effect sensors have been around for years. The magnetic sensors used on the ABS, and the distributor to initiate the spark, are well tried and reliable concepts as well. As my first boss used to say; "when an engineer makes up his mind, then soot him before he changes it".
rumpfy

That being said, ive never actually taken apart a V6 dizzy. I just trust the manual. Sorry for retaliating, im too sensitive at times.

Getting back on topic, the ECU is a good option. Something has to be destroying the sensors. The only complications i can think of when looking at another ECU is the model. The verada and executives may be different. To make sure, choose an ECU from a vehicle with the same VIN (only the first 9 letters/digits). That will ensure the car was made in the same country and with the same features.

I've taken out the ECU, mine says ECI on a big red sticker, part no. AW 325232 I'm being told by some that it's compatible with AW 335191 which is from a v6 auto ts magna, but other places are adamant that it has to be the exact same part number :( or it just won't work. Who's right :(

hi Van; No worries; these Magnas are an emotional experience. Be interesting to have a look at a dizzy.

joannn, the post #6 is by madmagna who knows his apples. If he says "any will do" then any will do. The base timing seems to be controlled from the distributor and is either 4 pulses per rev or 6 PPR. But WHY is YR bus giving trouble in this particular way. There must be something else up with it.
rumpfy