Just been searching through some old threads and i think it may be the PTU, but wanted to ask for some extra help to make sure.

 

Car ran fine yesterday, although i noticed that it misfired when pulling out of the petrol station, then went ok again almost immediately.

 

went to start the car this morning and it wouldnt start, as if the battery was under charged, just kept clicking and not turning over.

 

left the car for the morning and came back to it at lunch, to remove the battry and charge it. but the car started but now is only running on 4 cylinders. The front 2 cylinders are not firing. i have swapped over coil packs but still the same.

 

Is this likely to be the PTU?

anyone know?

does anybody know about this please?

yes i would try a known working one off of someone nearby if you can.

thanks very much

Also check your battery voltage (while the engine is running)..it should be near 14 Volt.

 

if voltage is 12V or lower : check alternator (presumably it's dead)

 

if battery voltage igets below 10V, the engine will start to misfire or cylinders will start to drop and usually all sorts of warning lights will start to come on (ABS, HICAS, etc)

Take one of the coil packs out and put it near the plenum, get some one to turn the engine over and see if you get a spark from the end of the coil pack to the plenum

thanks very much for your responses

have got the battery off the car and its on charge, i suspect that it may just be the battery. have ordered a series 2 PTU already though!! typical!! £124 from courtesy nissan, with connectors and mounting plate. guess it wont hurt to change it though

 

should have just taken the battery off straight away and charged it :headvswal