Question about 1990 Lexus LS 400
I have spark to all my spark plugs. I used injector test lights and wasable to confirm that my injectors are firing. I have checked the timingand it is correct. I have excellent fuel pressure. There are no errorcodes present.
When I crank the engine the engine might run fora fraction of a second. If I spray starter fluid in the intake the carwill run on the starter fluid.
If I disconnect the cam positionsensor(s) then the car won't even make an attempt to start. If I plugthem back in then the car will fire up but as soon as I let off the keythe engine dies.
I was going to swap out the MAF sensor but Itried starting another Lexus with the MAF unplugged and that onestarted fine. If I unplug mine it still doesn't start
The fuel pump relay operates correctly. Power is supplied to the fuel pump when the starter is engaged and will continue to run if the motor is "running" When you let off the key and the starter disengages the fuel pump will run until the engine stops moving
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Posted on Jan 02, 2017
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