Lotus Elan

Stuck Headlamp Solenoid

PostPost by: Ramsden » Sun Dec 26, 2004 2:54 pm

I have a late 130/5 and the headlamp vacuum switch is operated by way of a solenoid valve down at the front of the engine bay rather than the mechanical valve behind the dash found on earlier cars.

The car has been standing for a number of months and the solenoid valve has become jammed closed. As a result, when the headlamps are switched on they fail to rise, though they now do a good job of illuniating the engine bay.

Has anyone succeeded in unjamming a solenoid valve or is it time to send a little boxing day cheer the way of Paul Matty et al?

Thanks

Simon
Ramsden
First Gear
First Gear
 
Posts: 32
Joined: 09 Oct 2003

PostPost by: rgh0 » Sun Dec 26, 2004 11:04 pm

Simon

Never experienced it on my Plus2S 130/5 but 3 possible causes for the problem

1. A bad power supply or earth to the solenoid coil - check with multimeter and fix fault
2. A burnt out solenoid coil - check with multimeter and time for new valve
3. The valve seats are stuck together with gunk from the fuel vapors that come up the vacuum line - soak valve with a solvent such as carb cleaner to see if you can free it up.

Rohan
In God I trust.... All others please bring data
User avatar
rgh0
Coveted Fifth Gear
Coveted Fifth Gear
 
Posts: 7069
Joined: 22 Sep 2003
Location: Melbourne, Australia

PostPost by: Ramsden » Mon Dec 27, 2004 6:32 pm

Rohan.

I favour possibility 3. Ordinarily the valve can be opened by hand by pushing down against the force of the spring that holds it closed. Currently it is frozen solid.

I shall try your suggested fix.

Thanks

Simon
Ramsden
First Gear
First Gear
 
Posts: 32
Joined: 09 Oct 2003

Total Online:

Users browsing this forum: No registered users and 6 guests