Maserati Manual MK1
Lucas World Service News WSN604 Export
Mistral + 3500 GT Owner's Manual

FAULT 1):  ENGINE STARTS,  BUT STOPS AFTER 30 SECONDS AND WARNING LIGHT COMES ON

The oil pressure switch has not opened, allowing the thermal switch to trip the pump supply after 30 seconds and cause the engine to stop.

TEST
D. 1. Engine oil pressure

METHOD
Observe the oil-pressure gauge reading on the dashboard is above 5 p.s.i.

ACTION
a) If pressure gauge is reading correctly, proceed to D.2.

b) If no pressure is indicated check oil level with the 'dip-stick' and refill if required. If oil is found to be present,
    the engine oil pump should be checked.

TEST
D.2 Electrical Fault

METHOD
CHECK the lead from the thermal switch to the oil-pressure switch, and the corresponding terminals for possible 'earths'.

ACTION
a) If no electrical fault is found, proceed to D.3.

 b) If an electric fault is found, rectify as necessary.
 

TEST
D.3. Oil-pressure switch stuck closed.

METHOD
RESET the manual switch on the dashboard, after the required 15 seconds delay, and again attempt starting.

ACTION
a) If the fault recurs then the oil-pressure switch has stuck closed and a replacement is necessary.

Page 15
Click here to go to page 16

Click here to go to the table of contents