Theft Deterrent
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Driver School Candidate
Joined: Aug 2010
Posts: 12
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From: New Hampshire
Theft Deterrent
Would a Theft Deterrent system make it so the fuel pump would not engage or am i just dragging on the obvious task of having to replace the fuel pump.
Car is a 1991 ES250.Turns over but i dont hear the pump turn on and there is a light on the dash that comes on when it turns over that looks like it makes the headlight and tailights flash. Any ideas would be a great help!
Car is a 1991 ES250.Turns over but i dont hear the pump turn on and there is a light on the dash that comes on when it turns over that looks like it makes the headlight and tailights flash. Any ideas would be a great help!
Pole Position
Joined: Feb 2010
Posts: 200
Likes: 0
From: ID
The theft deterrent systems in cars that old don't cut off the fuel pump. Most just stop the car from turning over.
If you are sure you are not getting fuel then it might be worth checking the fuel pump fuse and the main relay which controls the fuel pump among other things. Sometimes the solder goes bad in relays and keeps the fuel pump from getting power.
But with the car that old it is probably the fuel pump that is bad.
Lets let others chime in and see what they say.
If you are sure you are not getting fuel then it might be worth checking the fuel pump fuse and the main relay which controls the fuel pump among other things. Sometimes the solder goes bad in relays and keeps the fuel pump from getting power.
But with the car that old it is probably the fuel pump that is bad.
Lets let others chime in and see what they say.
Thread Starter
Driver School Candidate
Joined: Aug 2010
Posts: 12
Likes: 0
From: New Hampshire
UPDATE! i have tested the fuel pump by putting 12v straight to the pump from the wires that come into the rear seat! The pmp turned on but sounded weak...I then tested the wires that attach to these wires and there is no current coming through them I already have the interior ot of the car to clean the car of all the rat and mouse bodies plus replace the carpet thats all messed up. Where is the fuse for the fuel pump located and where is the Relay located!
Pole Position
Joined: Feb 2010
Posts: 200
Likes: 0
From: ID
So the fuel pump works when direct wired but the wires connected to it are not getting power?
Honestly I don't know much about the ES250. I have only worked on a 2000 ES. The main relay on most cars should be under the drivers dash area if you take off the lower panel. And check all the fuse areas under the hood and any in the car. (Probably in the drivers foot well.) Good luck.
Honestly I don't know much about the ES250. I have only worked on a 2000 ES. The main relay on most cars should be under the drivers dash area if you take off the lower panel. And check all the fuse areas under the hood and any in the car. (Probably in the drivers foot well.) Good luck.
UPDATE! i have tested the fuel pump by putting 12v straight to the pump from the wires that come into the rear seat! The pmp turned on but sounded weak...I then tested the wires that attach to these wires and there is no current coming through them I already have the interior ot of the car to clean the car of all the rat and mouse bodies plus replace the carpet thats all messed up. Where is the fuse for the fuel pump located and where is the Relay located!
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Thread Starter
Driver School Candidate
Joined: Aug 2010
Posts: 12
Likes: 0
From: New Hampshire
OK so i admit i may not be the sharpest tool in the shed...but even this made me feel stupid......There is a Fuel shutoff switch located in the trunk on the passenger side wall. I called a local lexus dealer and told them the same little story like what i have above....Well they told me just to check this switch....I should have done this first they continued to say....So after all the work i have done replacing fuses relays and wiring all that i needed to do was push a stupid little button to reset the fuel system. SO ALL IS CALM HERE IN New Hampshire.......Now the rebulid begins...... Wish me Luck ill get some pics up as i rebuild to show people the progress!
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Pole Position
Joined: Feb 2010
Posts: 200
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From: ID
Wow I would of never guessed that. Like I said I don't know much about the ES250s. I can't think of any regular posters here with one either.
Good to know about that switch though. Like said above this thread will probably help someone out in the future.
Good to know about that switch though. Like said above this thread will probably help someone out in the future.
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