TD42 Engine managment fuse blowing

[Tiny]

Ok, so I have a 1990 GQ TD42 with a dynamic turbo, 10Psi, also have a turbo timer. At Appin saturday night the car just stopped and found the engine managment fuse blown meaning no power the the rack. Coming home las night rolled into the drivway and the engine died again. and the fuse wasn't blown but no power to the plug in the engine bay that goes to the rack. Checked power to the fuse behind and was none to pulled the fuse box off and bridged it with some 15A fuse wire. This then blew a 20A fuse (the 20A fuse and the 15A fuse for the engine managment were running in series) and the first fuse in the series was the 20A one was what blew. It seems there isnt an issue with the rack so is there anything is the Turbo Timer that could cause the fault or maybe a bared wire in the loom shorting out? does any have any ideas? and can any one email me or post a wiring diagram please. I NEED HELP I AM GOING 4BING THIS WEEKEND

Thanks

Tiny

[dumbdunce]

looking at the wiring diagram, there is next to nothing running off the 'ECU' fuse - there is not acutally an engine control computer - the only things that run off that fuse are the glow system controller and the fuel shutoff solenoid. without actually seeing it I'd suspect the shutoff solenoid has an intermittent short circuit.

shoot me a PM or email if you want me to come and have a look.

cheers

Brian

EDIT: ok I read the rest of your message, it's a bit confuzzing... what do you mean by "rack"?

[Tiny]

looking at the wiring diagram, there is next to nothing running off the 'ECU' fuse - there is not acutally an engine control computer - the only things that run off that fuse are the glow system controller and the fuel shutoff solenoid. without actually seeing it I'd suspect the shutoff solenoid has an intermittent short circuit.

shoot me a PM or email if you want me to come and have a look.

cheers

Brian

EDIT: ok I read the rest of your message, it's a bit confuzzing... what do you mean by "rack"?

sorry I mean the fuel shut off and glow system, the problem is that there is no power getting to the fuel shut off solanoid or the back of the fuse, it also appears for some reason that the tail lights are tied into the wiring and I am still trying to figure out what the turbo timer is wired into is there a wiring diagram online or would anyone have an electronic copy they could shoot across to me

[dumbdunce]

straight from the digi cam to you.

the wiring for the turbo timer is my guess (based on the hundred or so I've installed over the years) - this is how most of them are wired. the good ones just plug into the vehicle wiring harness.

http://users.dodo.com.au/~brianandsandy/elecsystem1.jpg <- standard wiring diagram

http://users.dodo.com.au/~brianandsandy ... htimer.jpg <- with turbo timer added in

[Tiny]

straight from the digi cam to you.

the wiring for the turbo timer is my guess (based on the hundred or so I've installed over the years) - this is how most of them are wired. the good ones just plug into the vehicle wiring harness.

http://users.dodo.com.au/~brianandsandy/elecsystem1.jpg <- standard wiring diagram

http://users.dodo.com.au/~brianandsandy ... htimer.jpg <- with turbo timer added in

Thanks, the one on the GU is pluged in the harness.

[dumbdunce]

did you get it sorted?

I have been all day pulling out all the kustom wiring in my rolled 80. it's quite a pile of wires when you put it all together in one place

[Tiny]

did you get it sorted?

I have been all day pulling out all the kustom wiring in my rolled 80. it's quite a pile of wires when you put it all together in one place

Nope, it appears the previous owner has wired the tail lights ito the circiut somehow and there is a short in that section still trying, need it ready for the weekend

[BigMav]

I had the same problem with mine a while back. The reason it wasn't getting power to that plug that goes to the solenoid was that one of the fuses inside the kick panel (can't remember which one) was having some issues. Behind the fuse itself the little metal tabs that make the connection start to get brittle and crack giving an intermittent fault. When I pushed and wobbled the fuse a bit the solenoid would work again. I just bodged it up with another wire behind the fuse box but it seems to have done the trick so far. Might not be this at all in your case but definitely worth a look. The wiring diagram in the gregorys manual will tell which fuse to check. If you have any dramas I can have a look if you like.

[dumbdunce]

did you get it sorted?

I have been all day pulling out all the kustom wiring in my rolled 80. it's quite a pile of wires when you put it all together in one place

Nope, it appears the previous owner has wired the tail lights ito the circiut somehow and there is a short in that section still trying, need it ready for the weekend

if you need an 'emergency' fix you could attempt to isolate the circuits (ie pull the fuses) then you should be able to run it by running a hot wire straight from the battery + to the fuel shutoff solenoid, and using a jumper lead from the battery + to the glow plug bus bar for cold starts. quick and dirty but it gets you on the trails in 10 minutes.

[Tiny]

did you get it sorted?

I have been all day pulling out all the kustom wiring in my rolled 80. it's quite a pile of wires when you put it all together in one place

Nope, it appears the previous owner has wired the tail lights ito the circiut somehow and there is a short in that section still trying, need it ready for the weekend

if you need an 'emergency' fix you could attempt to isolate the circuits (ie pull the fuses) then you should be able to run it by running a hot wire straight from the battery + to the fuel shutoff solenoid, and using a jumper lead from the battery + to the glow plug bus bar for cold starts. quick and dirty but it gets you on the trails in 10 minutes.

I will move the tail light circuit off the engine circuit today and put it on a spare fuse then I can track the tail light issue out while its isolated and not causing engine no running type fustrations

[dumbdunce]

did you get it sorted?

I have been all day pulling out all the kustom wiring in my rolled 80. it's quite a pile of wires when you put it all together in one place

Nope, it appears the previous owner has wired the tail lights ito the circiut somehow and there is a short in that section still trying, need it ready for the weekend

if you need an 'emergency' fix you could attempt to isolate the circuits (ie pull the fuses) then you should be able to run it by running a hot wire straight from the battery + to the fuel shutoff solenoid, and using a jumper lead from the battery + to the glow plug bus bar for cold starts. quick and dirty but it gets you on the trails in 10 minutes.

I will move the tail light circuit off the engine circuit today and put it on a spare fuse then I can track the tail light issue out while its isolated and not causing engine no running type fustrations

tail lamps have their own 10A fuse that runs off a different circuit, completely different fusible link to the glow/start/run system.

does it have a trailer connector? sometimes when they are full of crud they will blow fuses.

[Tiny]

did you get it sorted?

I have been all day pulling out all the kustom wiring in my rolled 80. it's quite a pile of wires when you put it all together in one place

Nope, it appears the previous owner has wired the tail lights ito the circiut somehow and there is a short in that section still trying, need it ready for the weekend

if you need an 'emergency' fix you could attempt to isolate the circuits (ie pull the fuses) then you should be able to run it by running a hot wire straight from the battery + to the fuel shutoff solenoid, and using a jumper lead from the battery + to the glow plug bus bar for cold starts. quick and dirty but it gets you on the trails in 10 minutes.

I will move the tail light circuit off the engine circuit today and put it on a spare fuse then I can track the tail light issue out while its isolated and not causing engine no running type fustrations

tail lamps have their own 10A fuse that runs off a different circuit, completely different fusible link to the glow/start/run system.

does it have a trailer connector? sometimes when they are full of crud they will blow fuses.

It did but its been pulled off and the conector was cut back at the tail lamps

[guzzla]

make sure the wiring harness to the rear lights hasnt been rubbing on a metal edge when we cut the rear quaters off it may have come loose.

[Josh_GQ]

Mine was blowing that same fuse, ended up being the solenoid for dual batteries was faulty

[BigMav]

Tail light circuit should not have anything to do with your fuel problem. Like already said just unplug the wire that goes to your fuel cutoff solenoid and use some wire with alligator clips to jump straight off the battery if you need a quick fix. I did this for a few weeks while I was busy with other things. You'll just need to disconnect every time you turn it off.

[Tiny]

Tail light circuit should not have anything to do with your fuel problem. Like already said just unplug the wire that goes to your fuel cutoff solenoid and use some wire with alligator clips to jump straight off the battery if you need a quick fix. I did this for a few weeks while I was busy with other things. You'll just need to disconnect every time you turn it off.

I know, its v strange