Question about 1989 Toyota Land Cruiser

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1989 toyota land cruiser.driving on highway engine died.turns over good but wont start.has a full tank of gas.put in new battery and altenator a few weeks ago,been running fine.checked the fuses and found a few were blown.headlight fuse and a few others.appears to be a short i think.any advice.

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Hi.

Re:new battery and altenator
If engine turns over battery and altenator are OK.

Re:checked the fuses and found a few were blown.
Effectively those may be symptoms of a wiring problem. If a job had been carried recently, undoing and re-connecting the wires to access the part(eg. alternator) may have contributed to the problem.

Check all fuses, with attention to fuel pump fuse. Check the connectors to fuel pump, eventually read volts at pump and nsure that fuel is circulating
Check air intake and connectors to air intake sensors (MAF sensor), check connection to crank sensor and O2 sensors.

The blown fuses may also have been incidental. If you did not find anything, troubleshooting must proceed as usual, checking distribution, fuel pressure, and then factors that can affect the ignition.

Remember that after a prolonged and failed attempt to crank the vehicle, the cylinders will be flooded and the car will no start (wet plugs- no spark).

Check if there is spark on all cylinders. This can be done removing one by one the spark plugs wires and putting them near to the engine block while someone else try cranking. You will see the spark.
If there is no spark, then you have a coil/distribution problem. test coil by reading volts in and impedance (coil must not be open). I think this engine is not distributorless. Check distributor cap and wires. If you have disconnected spark plug wires after the problem, also ensure that wires are connected in right order.

Once you are sure that there is spark, check fuel delivery and engine control. This part will take longer.

I uploaded here engine control diagrams and other documents that may help.

Regards.

Posted on Sep 08, 2010

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====

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====


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