fusible link burning out

openflame06 · Post by **openflame06** » Mon Mar 08, 2010 1:13 pm

Hey everyone.

My L series turns on and runs but the Fusible link that runs the battery/alternator starter etc eventually gets hot and burns.

If I take the alternator out of the circuit (disconnect it) the wire instantly stops being hot. Just wondering if there is anything connected to the alternator i should check or should i remove and replace the alternator?

thanks.

Post by **Alex** » Mon Mar 08, 2010 3:26 pm

common problem. Nearly every l-series ive seen had this problem.

not sure of a cure. What causes it i believe is too much stuff running off the battery. Ie spotlights/stereo etc etc..not proven tho, jsut a theory.

the first thing i did to rectify was the beaf up the fusable link, got a peice of 8 gauge stereo power cable and used that, still burnt thru after a while tho.

Finally i went out and bought a circuit breaker, worked a treat. Used three of them for all three fusable links and the problem was gone.

alex

steptoe · Post by **steptoe** » Tue Mar 09, 2010 8:56 am

I'd try replace alternator myself given what you found

openflame06 · Post by **openflame06** » Sat Mar 27, 2010 5:27 pm

Replaced the alternator and made my own link since no one in newcastle i went to had them. Seems fine so far, but havent got to drive it much as i now have a strange fuel problem.

If i put fuel in the carby it starts and runs for quite some time, but if i turn it off and try and start it again its like theres no fuel getting into the carby even though i checked the fuel line and it seems to be.

maxxair · Post by **maxxair** » Sat Mar 27, 2010 5:53 pm

Maybe its your fuel pump is F'ed. and shorting the fusible link. this happened to me. check it out for sure.

fusible links are made of a set gauge wire which burns through BEFORE your wiring harness. best to have properones mate, as made up ones arent good. go to the wreckers, get all the links from the subes. wont cost much (nuthin if your good.) cheers buddy, Rohan Maxim

YouTube · Post by **El_Freddo** » Sun Mar 28, 2010 12:25 am

Also on the fuel thing - the L's have a momentary circuit on the fuel pump so if the engine stops the fuel pump stops pumping fuel in the case of an accident. So when the ignition is turned on the fuel pump will either pump for five seconds or not pump at all until the engine is cranking over.

When the engine is hot the fuel will evaportate if the soleniod on the carbie is stuffed, thus no fuel to start the engine until enough is provided by the fuel pump thus making starting hard to do...

I'd be swapping or reconditioning the alternator and see what happens to the fusable link. Appliances run directly from the battery and fused appropriately should not cause an issue with the fusable links burning out.

Cheers

Bennie

openflame06 · Post by **openflame06** » Sun Mar 28, 2010 7:53 am

Ive taken the fuel pump out and hooked it up to a battery, seems to pump fine.

Checked the flow at the fuel hose on the carby to and it pumps when the engine cranks. Ive got another carby that ill clean up and try today

Matt · Post by **Matt** » Sun Mar 28, 2010 8:41 am

Also go the wreckers and you can get this other fuseibly links , thatslide right it. Commonly found on Toyota's. They are plastic and are very easy to fit and find the right amperage. If i was near my ute i would take a picture as they are hard to explain. But look the same as the top left in this picture. And they don't get as hot and don't burn out without being overloaded.
The only downfall i have found is you can't put the top cover over the fusible links, but it still looks nice and neat i think anyway.

http://images.google.com.au/imgres?imgu ... s%3Disch:1

Or the pink and yellow ones here.

http://www.alibaba.com/product-gs/21277 ... ement.html

justin35 · Post by **justin35** » Sun Mar 28, 2010 10:41 am

Another possability,pull your fuse box down and check the wires on the back,i think the alternater wiring goes thru it at some stage ,,may be a problem there,if not check wires on the back of the ignition..

SuBaRiNo · Post by **SuBaRiNo** » Sun Mar 28, 2010 11:57 am

Angry post deleted... PM sent

Dave