27

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 would suggest that you have a police officer have a long discussion with this individual about this. If this individual when moving your vehicle hits another ...


26

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.


23

This comes directly from this web site: http://www.obdii.com/articles/Onboard_Diagnostics_Demystified.html What it says, is that early OBD-II systems could not detect misfires, but since then a few variations on the theme have been implemented. The basic idea is that if a cylinder fires, it gives a kick to the crankshaft causing a slight variation in crank ...


20

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 will not loan their key to anyone else. If the individual is still able to move the car, he probably made an unauthorized copy, in which case you should contact ...


15

Ants are unlikely to be the source of your issue. Your battery is filled with sulfuric acid, and that is sufficiently strong enough to completely dissolve any ants that made their way into your battery. Above that, your battery should be completely sealed. Also, even if the ants did manage to get into your engine: metal > ant. This issue is more than likely ...


12

Engine misfire can also be detected by looking at the coil voltage just after the plug is fired. When the fuel/air mixture actually ignites there are lots of ions and radicals floating around. This provides an easier path for electricity from the coil. If the mixture does not ignite for any reason the resistance is extremely high. An observant auto tech ...


11

Nothing. It could work exactly the same as a keyed ignition, in which case your starter motor would engage, but manufacturers (and I think this is true for all) have added a simple piece of logic which only engages the starter if the engine is not already running. This would be the ideal solution for keyed ignition as well, but it has only been in ...


10

This is usually the symptom of a dead battery. Has the car been sitting for a long time without being driven? Or did you leave the headlights or interior lights on? Try jump starting it (see owner's manual for instructions) and drive it for a while to charge the battery. (I usually find that 30 minutes or so of driving is sufficient; make sure not to switch ...


10

From personal experience, I'd replaced ALOT of these working at the dealership. It wasn't just the accords either, it was quite a few Honda and Acuras that used the same design and power delivery system. The most common issues I saw out of probably close to 100+ failures of these was: Ground strap on the starter becoming corroded. Bad ground to engine Your ...


10

First, think of the possible failure modes: Spark plug is clogged with carbon or has an isolation error - it conducts current, but doesn't generate sparks, because the current flows through the carbon from electrode to electrode. Break inside the plug, e.g. broken / worn electrodes - plug doesn't conduct (and of course doesn't generate sparks) Cable has a ...


10

You have a qualitative description of what happens, but let's break it down to a smaller scale. When we talk about "temperature" of something, we are really talking about how fast the molecules are moving around and bouncing off each other. "Temperature" is really "kinetic energy". And it turns out that there are other types of energy besides moving around ...


10

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 to unburnt fuel deposits. Since you are saying you are seeing the carbon tracking on the number one plug again, this is my reasoning for telling you the plug ...


9

Repeated clicking is a result of not enough power making it to the starter. Your battery either has a bad connection, or is too weak to turn the starter motor. Battery Connection Your problem may be entirely due to a bad connection. Starters draw a lot of amps, and batteries are weaker in cold temperatures. I'd start by fully exposing the terminals. You ...


9

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 plugs and/or well-designed high pressure injectors ensure the diesel is in a suitable state for combustion and prevent delayed ignition. If the engine is warm ...


9

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 vehicle, your simplest solution is unplugging something on the ignition side. Historically, you could unplug the king lead (from the coil to the distributor) but ...


8

Mostly replacement is preventative maintenance. Eventually they'll get cracks that moisture can get into, etc. If they test good, they're probably fine for the moment, however, at their age they could develop problems any time. On my '91 Toyota, I've been through several sets now, and have to say that in my case, OEM is the best. I've tried other brands (...


8

The most likely cause is a worn or misadjusted clutch. The clutch disc is slipping meaning that all the engine's power is not being transmitted to the transmission. The cost of a clutch replacement is too varied to give an accurate estimate. Clarification Note Energy will always take the path of least resistance. From a clutch's perspective, it is much ...


8

If you are hearing the starter turn (typical starter whir), the most probable problem would be the one way clutch has gone out. It's the part of the starter with the teeth on it which engages the starter ring gear. If the solenoid has gone out, the starter motor will not spin, because the solenoid is the part which forces a large copper washer into the posts ...


8

Voltage drop problems are very common in multi component, multi interface systems. For instance the starter motor has a cable that runs from the battery to the starter. The cable has ring terminals on the ends and those terminals are bolted to the appropriate component. High resistance at any of the aforementioned connection points is a recipe for voltage ...


7

You can find the spark plug gap specifications on a sticker that will be either on the radiator support or on the underside of the hood (there are other locations such as the strut towers, etc). This is the gap that should be used when using the OEM spark plugs and even when using an off-branded plug that is a valid replacement for the OEM brand. Here are a ...


7

Referring to this website: If all is well and there is no slack in the timing chain then you will see about three to five degrees of "reverse motion" before the distributor begins to turn. To measure this, do the following: Get a socket which fits the front balancer crank shaft bolt. Get a breaker bar which is long enough to turn the crank using it. ...


7

In the dawn of fuel injection most cars used a simultaneous double fire system. During every crank shaft revolution the injectors spray half the fuel needed. This way half the fuel waits on top of the intake valve. When the intake valve opens the first half is dumped in and the injector sprays in the other half the fuel. Similar thing happens with the spark....


7

Pin 16 on the ODB-II connector is specified as "Battery Power" or "Battery Positive". There will always be 12v power between pin 4 and 16. Note that pin 5 has "ground" in the description, but that is just for the communication signalling and not for power. The connector will always have power on these two pins regardless of the key position, and when you ...


7

It sounds like your shifter may not be seating into park correctly. You may want to try moving it back and forth from gear into park (occasionally, with a slight amount of force; you don't want to break anything). Verify that the key is not in the accessory position, and each time you switch to park, try to remove the key. I've also seen the key release ...


7

Funny you should ask this Max :) First lets make sure of our definition. Running an engine lean means changing the air / fuel ratio to have more air than is ideal (14.7:1 air to fuel). In my reading there are two effects. First, the fuel is an atomized liquid which has a cooling effect on the combustion chamber. So less fuel, less cooling effect. Second, ...


7

If the picture you have attached is similar to the starter on you car, then the power to the starter motor is only delivered if the solenoid operates, so the solenoid must be working. However, the shift lever labelled in the picture, that pushes the pinion forward to engage with the flywheel may be broken, that would explain your problem. Your problem ...


7

Yes you should ground the spark plug. In your case the spark plug was close enough to the block to still jump the gap. If the plug was far enough away from metal nothing would have happened. On a separate note. When testing for spark it is recommended to use a spark tester. Using a spark plug is a poor test of the ignition system. In free air the spark ...


7

You should have 2 coil packs on the back side of the engine near the throttle body. Wires run to individual cylinders. I don't know how easy it would be to find locally but you can use an inductance spark tester. http://www.amazon.com/Lisle-19380-Spark-Tester/dp/B0002STS3U Another way to see if the coil pack is firing would be to pull a wire out and use ...


7

The transmission and its control systems will not be damaged by this practice. Safety could be compromised if the shifter is left in this position. The park lock will not be engaged so the vehicle could roll away. This is a system internal to the transmission that is a back-up to the parking brake. It is important to move the shifter back to the P position ...


7

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 already be available, but without knowing the specific car, there's be no way for us to help you with this.) The voltage doesn't spike unless there's unusual ...


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