26
votes
How can I disable my 2002 Ford Explorer so someone with a key can't start it?
If your friend is moving your vehicle without your consent and does so deliberately your friend is committing a crime. Vehicle theft. If you are asleep when this happens then consent was not given. I ...
- 3,962
26
votes
How can I disable my 2002 Ford Explorer so someone with a key can't start it?
I'll make it very simple for you, Dave.
Just remove the relay highlighted, in yellow, from the diagram above.
This goes to the starter.
- 696
26
votes
Accepted
What is the most cost-efficient solution when door keys do not fit ignition?
Being a auto locksmith, I can 100% recommend that you have your door lock rekeyed to match your current ignition key. Cost will depend on location and if you remove the the lock yourself and take it ...
- 3,790
20
votes
How can I disable my 2002 Ford Explorer so someone with a key can't start it?
Remove the publicly available key.
Make one copy of the key for each person or household who needs to be able to move the car. Give a key to each person and have them sign an agreement that they ...
- 1,612
10
votes
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What Could Cause Flash Over / Arcing to Reappear on New Plugs?
I think your problem is your plug wires. I think they are leaking along the boot and down to ground (earth). With this loss of energy, you'll also see the large carbon buildup on the business end, due ...
- 160k
9
votes
Accepted
Diesel engine timing?
Diesel engine timing is accomplished through the fuel injectors (they inject fuel at the proper times). Proper timing prevents pre-ignition because there's no fuel in the cylinder yet to ignite. Glow ...
- 4,890
9
votes
How can I disable my 2002 Ford Explorer so someone with a key can't start it?
As stated in other answers, you really need to get your new housemate to start listening to you. If he doesn't respect your property, do you really want him living with you?
With regards to the ...
- 23.4k
7
votes
Accepted
Simplest installation of car-powered car-pc
Most everything external of the ECU is going to be 12vdc (+/-2v). (NOTE: As @juhist points out, more and more cars are supporting 5vdc output to charge handheld devices through USB ports. 5vdc may ...
- 160k
7
votes
Key won't turn in Honda Fit after ignition cylinder repair
I repair these quite often, even for Honda dealerships in my area. Its possible you just lost the key buzzer lifter and the now the key buzzer is dropping past the cylinders sheer line. Other then ...
- 3,790
6
votes
Accepted
Is it normal that a cold engine takes longer to start?
I don't know about longer (this is relative to the exact engine being served and the ignition type), but it is harder to start a cold engine.
There are a couple of things going on with the engine ...
- 160k
6
votes
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1996 Nissan Sentra won’t start after refueling
I think you are looking at the wrong area of the car. If the electronics didn't come on, this is an electrical power issue, not a fueling issue. I'd check to ensure all connections are good from the ...
- 160k
5
votes
what happens when you hit engine button on a keyless ignition?
I rented a ford mustang, while reaching to adjust the a/c controls while driving on the interstate my finger accidentally hit the stop start button and at 70 mph the engine immediately shut down.
The ...
- 51
5
votes
What are the disadvantages of wasted spark ignition? (Consider single cylinder engine)
I think you miss understand the reason for waste spark.
The example you give of a single cylinder engine puts you in the realm of lawn and garden equipment. 90% or more of such engines use a magneto ...
- 16k
5
votes
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How does the Prius (2011) re-ignite the gas engine without causing too much wear on the ignition?
The Prius doesn't start traditionally. It actually has two motors, MG1 and MG2 (MG = Motor Generator.) MG1 replaces a traditional starter motor in the sense that it is responsible for spinning up ...
- 413
5
votes
Accepted
What are the benefits of direct ignition (coil on plug) system?
Coil on plug has several advantages over conventional distributor type systems:
1) Less voltage loss from the coil to the plug. With fewer connections and the elimination of the distributor rotor to ...
- 11.6k
5
votes
How can I disable my 2002 Ford Explorer so someone with a key can't start it?
Remove fuse #26 (Brake-shift interlock) and the starter relay. This will prevent the "friend" from starting the car, and will also prevent the "friend" from simply putting it in neutral and pushing ...
- 51
5
votes
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Is it possible to actually run on fumes
It's just an expression, car engines require liquid fuels. Once you get down to vapors the pump cannot pressurize the fuel system, even if you had pure gasoline/petrol fumes there simply isn't enough ...
- 17.1k
4
votes
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Do remote starters increase engine wear substantially on keyless ignition vehicles?
Modern cars turn off all electronics when starting the engine. Ever notice how your radio cuts out when you start your car? Turning a car on and off isn't a big deal. UPS does this at every single ...
- 671
4
votes
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What are the disadvantages of wasted spark ignition? (Consider single cylinder engine)
From a theoretical perspective:
Is there any disadvantage of this wasted spark?
Depends on the ignition timing.
If the intake valve is closed when the spark occurs there is no risk of preignition....
- 39.2k
4
votes
Ford Focus change ignition pat system chip
It sounds as though you just want to cut out the "black box" and try to make this work. If so, you are sadly out of luck. If it were that easy on any system which uses a security system, a lot more ...
- 160k
4
votes
'89 BMW 525i E34 - Starting problems if car not driven for a day
Probably a fuel delivery issue
It sounds basically like you're not getting sufficient fuel pressure on start. When you leave your car without starting for a while, the pressure drops, and the fuel ...
- 5,235
4
votes
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Weak spark on one cylinder
What you found is not necessarily a weak spark. The test you described with pulling off the spark plug wires off one at a time to see how the engine behaves is a general misfire test. All you can ...
- 16k
4
votes
Is there a risk of igniting the incoming charge with wasted spark systems?
If the inlet valve opens 20 deg before TDC, will fresh mixture be going in or not? As there is still pressure in the cylinder - the exhaust leaving is helping to "draw" the fresh mixture into the ...
- 34.7k
4
votes
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Electrical question - solar panels and kill switches
I would look into setting up a relay controlled by the ACC or RUN circuit. When the coil in the relay is not energized the contacts would connect the panel to the battery but when you switch the ...
- 3,790
4
votes
Accepted
Is it possible to have a good looking spark but but still not suitable for ignition?
Inside the cylinder is quite a hostile environment. What looks like a strong looking spark at atmospheric pressure outside of the cylinder can become nothing at high pressures in a fuel rich ...
- 25.5k
4
votes
Why does ignition occurs during the power stroke in spark ignition engines?
In normal running conditions, the ignition does not happen during the power stroke, but just before, at the end of the compression stroke, because it takes time for the burn to propagate through the ...
- 2,388
4
votes
2005 Impala No start, no crank, but starter solenoid clicks
From my line of thinking, there's an issue (or issues) with the connection to the battery. Most likely the reasons the jumper pack works but the jumper cables don't, is because the jumper pack ...
- 160k
4
votes
Accepted
2005 Impala No start, no crank, but starter solenoid clicks
A reading of 9.5 volts while cranking (or trying to crank) is way, way too low for a 1 year old battery. New batteries sometimes go bad. Your battery needs to be load tested, preferably by the store ...
- 7,433
3
votes
Motorcycle won't stay on when in gear
If it instantly dies when you put it in gear, even when holding the clutch (and the clutch is operational, which you can know if it doesn't jerk forward when you shift into gear when holding the ...
- 288
3
votes
How Does a Person End Up With Their Timing "180 Out"?
There are 2 points in the engine's cycle when the piston is at TDC: The transition between compression/combustion, and the transition between exhaust/intake. The first one is the TDC you're looking ...
- 31
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