Prado 90 - Glow plug voltage question (1 Viewer)

[dodido]

Hi gents,

My 1999 Prado 90 diesel has troubles starting when cold - I don't think my glow plugs are heating up when I turn the key.

Vehicle has new battery, new starter relay, and new glow plug relay. When I take a voltmeter and put the NEGATIVE on the battery and POSITIVE on the glow plug harness (the metal rod that connects the 4 glow plugs), I get about 0.2V (much lower than expected - should be about 12V) until the relay clicks, at which point I get 0V (as expected).

Any ideas why I am not getting close to 12V?

 

[bushak]

Did you ever figure this out, when I multimeter the same on mine, it initially surges up towards 12v, only registers about 6 or so then down to 0.02…. Happens immediately and has resulted in a no start for me.