Have you also checked its not an earth problem. Sounds like you get a voltage drop when the starter is cranking.
To check this use a jump lead from the engine to the battery (which could be a problem as its in the boot!) In fact have you cleaned the engine and battery earth points??
If you cant get a jump lead long enough you could always put the battery by the engine bay and then a live jump ;lead to the solenoid and the earth onto an engine stud.
Goof luck!
|