Question about Cars & Trucks
..changed alternator to 80 amp on hj75 landcrusier 2H and since cannot get glow plugs to preheat but they do work when key in start position.Light does not come on for preheat but does when key in start position.
Recheck the connections some connection loose, bad contacts, use the VOM for some wires open or break. with alternator/ignition see the diagram attached. If the problem persist RUN the scanner/computer for easy diagnostic and fix it.
God bless you
Posted on Jul 12, 2013
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Posted on Jan 02, 2017
Sounds like pump timing is out of sync with engine crank and camshaft. Utterly crucial on a diesel engine. all needs to be pinned in place when refitting chain or belt, then pump timing sho uld be set up with a dial test indicator. A job for someone who knows what their doing. Before considering buying this carry out compression check as if timing is out between cam/crank tow starting could have bent valves!
Hope this helps!
Posted on Dec 13, 2008
SOURCE: 1997 VW JETTA DIESEL GLOW PLUGS
You have to replace the defective glow plug. You can test the glow plug without the test light. Just put a wire on the bolted end of the glow plug and connect this to the battery (+) terminal. Then, put a wire around the body of the glow plug and connect this to the battery (-) negative terminal. Hold at this position for a minute or less. Good glow plug will heat up.
As far as the wiring schematics, I will just describe
it. Your ignition switch is connected to the positive
terminal of the battery by way of the fuse in the fuse
box. From the switch it goes to a timing relay before
going to the glow plug terminals. The glow plug body
is screw mounted to the engine block which serves
as the negative terminal. So, as you switch your
ignition, it heats up the glow plug enough to give a
combustion of the atomized fuel in the cylinder piston
of your car causing it to run.
Posted on Nov 21, 2009
i believe there is an issue with the positive battery cable.. cable coming from the battery to starter..alternator gets feed from starter battery post..i have seen this problem before..check battery feed to alternator..if 12v is not at alternator main feed wire(large wire)..it will not charge..you will need positive cable from battery to starter..i hope this helps
Posted on Jan 11, 2010
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