Zetecfiesta

Hey guys ive got three problems with my turbo that are all electrical!!

1: My fan wont work, if i put power to it at the plug off the fan it spin, if i unplug the plug off the thermostat housing and put power to that i can put my multimeter at the bottom and register 13volts but when they are plugged together they fan doesnt work. anyone know whats that about?

2: Every time i plug my headlamp relay in that does the dipped beam the headlight goes out on the drivers side when i remove it it all works fine but i obviously can only flash my headlights on passenger side, anyway i can fix it this? i think its shorting/earthing out on the fuse box!

3: fixed the jets!

Many thanks guys!

AJ-RST1

iTrader: (2)

Its the fan switch for the fans mate, get a new fan switch that screws into the thermostat housing!!! job done

I would say its your relay for your headlights change the white ones at the back of the fuse box. i had same problem changed them and it cured it.

mark2

as said fan switch but to make sure disconect plug and bridge it if fan works ,switch change time 2 min job
now the lights probaly relay as said but have a good look at the connections inside the fuse box from the top your looking for arking signs there will be signs of it on the relay
will be worth cleaning them up and tweaking the tension of the female conector in the fuse box for the relay i use a fine pick and wd 40 ,give it a spray and use the pick to close the hole up and also to scrape the contacts clean once done try the left relay in right hole and vice versa that should tell ya if the relay is shot its also worth removing the earths wires and cleaning them to
every rs i have ever had as had an issue at some point with lights and there contacts, can be a pain but most of the time its been dirty or bad contacts
goodluck
mark

Zetecfiesta

ive disconected the plug and bridged it and it doesnt work!

looked at fusebox and where they all plug in seems damaged/mlted and the relay looks slightly melted too but ive swapped em around and tweeked em and it doesnt make any difference, its only when i plug that final relay for the flasher on the drivers side it stops working, pull it out and it starts working again! can i cut the wires from under the fusebox and rewire it?

mark2

hi
nasty its melted coz its was either loose and arked as you hit bumps on the road or some think has been done to cause the damage like wiring
right lets sort this fan out by trying this
1) remove the plug which connects the fan up, should be down on the left
2) if you have a multi meter or light tester connect it up to this connection and bridge the fan temp switch again this will find out if the fans the problem but give the connectors a good clean as they corrode alot as being at the front, do both male/female with pick/wd40
3) run a neg and positive to the fan with engine off not on as voltage higher this will definately tell you if its the wiring by doing the last 2 stages
if it is found that the wiring is at fault it may be linked to the fuse box by the sounds of it
right the lights
fact is if its melted the relay holder the heat would of damaged the contacts so just rewiring it from the bottom may not solve it unless you can replace the connectors inside
personaly if you do the tests above and its the wiring with regards the fan then i would be inclined to replace the fuse box with a good one from a breakers ect ect as this may be causing both problems

it depends on how you want to fix the problems as you can buy a fan controler which goes into a water line and comes with its own wiring and relay and is totaly independent of your engine bay wiring and you can get them with a varible one which means you can control when the fan comes on ie at a certain temp
same for the lights you can rewire them independently and still use your switches or new ones
but if you have problems now with the fusebox whos not to say more will crop up soon
sorry for the grim news
mark2

Zetecfiesta

ok i have now fixed the washer jets so thats 1 problem down!

i have identified the problem with the fan as well! but unsure how to fix it.

i bridged the plug at the thermostat housing and nothing worked and i checked for power at the bottom plug and nothing. so i put a direct feed from the battery to the plug at the thermostat housing and bridged it and the fan came on, this would lead me believe that there is no ignition live to the fan switch. is that correct?? so if i was to put an ignition live to the switch this would solve my problem?

i dont think its fuse box related as thats allways been a little funny on my car and the only problem its ever shown up is the head lights! i think the problem is more than likely gonna be with my auto electrician friend whos done my wiring and messed something up somewhere!

mark2

right if its a dead feed problem surely it would be better to find the brake as the live ignition feed feeds other parts so it will probaly short out and even cause more ag later if your going to replace the live feed to the fan switch then you need to isolate the old feed so it aint a problem
if i remember rightly the live feed for the fan also goes to the dipped/mainbeam relay and as you have a problem with them i would be inclined to trace the lines and check relays meeting point (fusebox ) as i said
when arking happens i causes nearby contacts to be affected it melts and then allows the circuit to fail
i would see an auto electric pro but the bill aint going tobe cheap but fusebox and loom is and you can doit yourself
mark

Zetecfiesta

i kno an auto electrician its just that he is so busy he never has time to come and help me, doesnt help that he is a mate so i cant keep mithering coz he will get annoyed and he knows he wont get much money from helping me thats why i have been trying to fix it myself to save bothering him and cause the car has been sat their for about 3months with just those problems lol!

mark2

if its like that get another loom/fusebox i am 99% sure its the fusebox seen it loads of times once they burn up a bit the plastic goes hard and when you hit bumps it drops off

theres a fact that most car fires are wire related have a look at insurance claims/sites, you,ve seen the burning on a relay and once plastic does catch alite it self feeds itself even a small electric fire can right a car off
people may say i am wrong and say you can run a wire hear and there if you know what your doing thats fine if you make the old one reduntant but i carry my kids in my rs and if it means i have to replace a loom to make my car safe i will doit so my advice might be harsh but its the right thing todo from a cost point
dont get me wrong a new feed to lights and fan would be fine using your old fusebox but its damaged due to arking as you have said above so i would advise changing it just for the fact of above if its burnt like you say it aint never going to work right without a serious fix /bypass which will cost alot more than a good fusebox/loom if its sat on your drive for 3 months coz of the faults another few days work taking it slow and new good loom will be in, if you have had a few rs's apart it aint such a hard thing to do old out new in might look like it will be a handful but it aint
mark2