Spectrum TS500 Fuel solenoids keep blowing

[Chris2005]

Hi All

I am having problems with a spectrum ts500 burning out fuel solenoids and blowing the 40 amp fuse.

The original went so I replaced it with a solenoid from a scrapped MD11sr but the next day it has done the same thing again, thinking it was a one off I got another solenoid from a scrapper as the owner has just taken 5 MD11sr units off the road, next day blown again.


The voltage of the alternator is 14.2 volts .

Regards

Chris

[cadwaladr]

i have had this problem,wire the trigger connection to the starter solenoid

[cadwaladr]

it could be that voltage is being sent to both the trigger and the holding causing it to fry

[Chris2005]

Hi Cadwaladr

Which colour wire is the trigger connection.

Regards

Chris

[cadwaladr]

good question,i would have to look at a diagram will try and get back to you

[cadwaladr]

8d seems to be the holding 8dp looks like the trigger not sure of colours

[cadwaladr]

just looked on another forum,8s to 8dp fuse it with a 10 amp fuse so do the connection at the engine end so the trigger only gets fed when starter is cranking[remove the 8dp]dont double up.

[Chris2005]

so remove 8dp wire from the fuel solenoid and replace it with a link from the starter pullin feed and fuse it with a 10 amp fuse?

[cadwaladr]

you got it,it seems like you have power on 8dp for too long maybe a board/relay issue.

[Chris2005]

Thanks very much for your help on this its much appreciated.

I will get this sorted out tomorrow and let you know how I get on.

Regards

Chris

[gravy258]

the white wire on the fuel solenoid is the pull in, red hold in and black earth.
So chop the white wire and extend it to the starter motor after the solenoid, like a carrier trailer unit

[RWJagster]

the white wire on the fuel solenoid is the pull in, red hold in and black earth.
So chop the white wire and extend it to the starter motor after the solenoid, like a carrier trailer unit

Hmm, wire the pull circuit for the fuel solenoid to the starter? Now where have I seen that before? ;)

[cadwaladr]

all we need is chris to tell us the result?

[Chris2005]

Hi All


I have had the unit running now for 3 days with the modification without any problems at all.

I would like to thank cadwaladr and gravy258 for all the help and information provided.

Many thanks

Chris