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16

While i'm not sure if there are mechanical tachometers like speedometers electronic tachometers are quite simple. An electronic tachometer works like an old analog volt meter. The speed of the engine is converted to a voltage. The voltage is fed to the moving coil. The coil creates a magnetic field. That field of the coil tries to align itself with the ...


13

Figured out it (thanks to a shove in the right direction by @mikes): It's the remote engine start accessory's antenna. I didn't think of it when I was asked if I had "add-ons" because it's an official Honda accessory (that I can't do without!) installed by the dealer before taking delivery. Specifically, see this exploded diagram part #4: I went back to ...


9

When I looked online, here's what I found about the location of the MAP sensor in your car. As always, a picture is worth a thousand words: From looking at other info about that car it's port injected, not throttle body injected (individual injectors on each cylinder, not just one on the throttle body). As far as I know there should never be fuel in that ...


8

Here's a rough approach that should work regardless of vehicle You will need to know the current brake pad thickness the thickness of a brand new brake pad how much mileage you've put on the car since the last brake pad change. The formula Mileage per mm = mileage since last brake change / ( brand new thickness - present thickness ) In ...


7

It might seem easy to integrate a sensor that detects the opening/closing of a mechanical thermostat's pintle (LVDT, for example) but here are some challenges which would need to be addressed: Cost vs Benefit Is a "smart" thermostat really worth the extra hassle and money when its dumb counterpart has the following to offer? : it's already cost-effective ...


7

You need Spark, Fuel, and Compression for an engine to run. Since this engine was just reassembled, there is a lot to question. Spark - rotor position - beware of caps where the points are not "straight through" plug wires in the correct position timing - may need play with it a bit coil - ensure it is firing spark plug firing - use a jumper to connect ...


7

Unfortunately there is no "one-size-fits-all" recipe, but here are some general guidelines: Half the battle is in understanding how it disconnects The chances of me damaging a connector due to ignorance is far higher than damage resulting from old age. Ask me how I know. Have some flathead screwdrivers handy It helps to have various shapes and sizes since ...


6

This is a very common failure in the Nissan's. The part number on the 2001/2002 Model Year MAF Sensor was 22680-6N200. This part has been known for a very high failure rate. It was later superceeded by part numbers 22680-6N201 and 22680-AM600. One of these two parts should be the one that you are ordering for the vehicle. If in any case these are not ...


6

There is a distinction that needs to be made between: OBD: this is an interface, that specifies the physical and electrical parameters required to connect a diagnostic computer and the car's electronics in a standard way. This is the bit that is mandatory by legal requirement, so that a car manufacturer cannot "lock in" its vehicles by requiring service to ...


6

Dodge installed VNT Turbochargers on cars in 89 and 90. The most well known of which is the 1989 Shelby CSX-VNT. The vanes were controlled by a dual port vacuum actuator. There was nothing electronic on the turbo itself, but there were vacuum solenoids (for boost control) on the lines going to the actuator. The VNT Turbo has movable vanes on the exhaust ...


6

The basic answer to your question is: Yes To be more specific, I cannot tell you if it will work or not. It appears you already have the specific dash version you want. What you can do is install it and see if it will work. What is the worst which can happen? If you are not modifying anything to fit the different gauge cluster, all you have to do is ...


5

The first O2 sensor is the one that the ECU uses to set the fuel-air mixture. If you had a problem with your first O2 sensor, the car would not run at its best. This error is on the second O2 sensor, sometimes called the "tattletail" sensor. On your Jetta, the second sensor is basically responsible only for turning on the "check engine" light if the ...


5

As Brian alluded to in his comment, in most cases it will not work. You have to have a reader which will read OBD-I. Some readers, like the Innova 3140 will read both, and comes with all of the adapters to attach to the "older" vehicles. Brian also stated about the change to OBD-II. In the US it was mandated to change over in '96. Some manufactures changed ...


5

Sounds like the temperature sensor is broken. A new one is $40-$55, and it's a 30 minute job to replace if you've never done it before (it lives behind the grill in front of the radiator). Not uncommon for these to fail on Subarus and give weird readings. Following Paulster2's comment, here's an image of what the sensor looks like; In this image (of a 2007 ...


5

Here's how to decipher INPA lambdaintegrator Short-term fuel trim. Both banks have a short-term correction of 28%. This should settle down to 0% fairly quickly, so the fact that it stays red indicates that it is attempting to apply the maximum possible correction for a lean condition (and failing to bring it within spec). adaption value additiv This is an ...


5

There are 3 basic aspects; cost, weather and redundancy. Sensors like LIDAR are great at mapping the surrounding world and creating a point cloud. The problem is that high quality LIDARs are very expensive and the processing power to analyze that point cloud in real time is also very expansive. Another aspect is that LIDAR is not forgiving of weather like ...


4

I would think you should be able to if there is a terminal for the wire to attach to. If the terminal has broke off at the base of the sensor, then it probably won't work. I would use a soldering iron, versus open flame type of iron to ensure the heat is more localized. If you are worried about the sensor not working due to the heat, I don't think I would ...


4

Yes, you can put them in the front bumper. You'll need to drill them in - just like the back bumper. I would recommend having a cut off switch for the front sensors somewhere in the cabin, otherwise the beeping would be very annoying. Rear sensors are (usually) powered by the reversing lamp's wiring, so in the front you won't have this... so a cut off ...


4

The thermostat would have been my first guess too. It doesn't need a sealing ring, the housing will slightly clamp it when you put it back together. It is entirely possible that the temperature sensor has 'drifted' and is reading lower than the genuine temperature. I have experienced this more than once in my own cars. It's worth as try as they're usually ...


4

Good question. My answer is, probably not. With a caveat; it depends on the speed of the failure. Sometimes bearings will become excessively noisy before they fail. In this scenario the vehicle owner would notice the impending failure and hopefully do something about it. Chances are that either a torque sensor or a knock sensor on the waterpump could ...


4

As well as being a parking brake warning light, that is also a service brake warning light - i.e. it warns you of problems with the main footbrake. Given what you have described, my first thought would be to check the brake fluid level - if it is near the 'min' mark, you will need to top it up from a fresh, unopened container. If it is empty, or below the '...


4

Sounds high for a car with a 2.0 liter engine. I used to have 1989 Opel Vectra with 2.0 8V SOHC engine, and the consumption was around 8-9L/100km. But then again, if you drive mainly short trips in stop and go city traffic, the consumption can actually be fine. If it's really consuming too much fuel, you should consider where the fuel goes. It can go to a ...


4

There are a few causes of overheating that wouldn't be fixed by your previous repairs. System not pressurising: The radiator cap needs to seal pressure in. If it doesn't, your coolant will boil at a lower temperature than intended, preventing it from flowing through the system properly. Check your rad cap. Coolant temperature sensor: sometimes, they get ...


4

For your 626, I'm seeing two different temp sensors listed. I'm seeing this single bladed one: Which shows to be associated with the gauge. I also see this two bladed one: Which I assume is for the ECU. I'm going to give an educated guess and state your Mazda is setup with the separate sensors which works out well in this case. As for other cars, this is ...


3

I'm a little concerned by the proposed fixes. While I don't know the specifics of your Merc, I find it odd that the timing chain would be responsible for fuel trim codes. The ECU swap seems to be a concerted attempt at what I like to call 'parts roulette': possible, but not probable. If you have codes for fuel trims and misfires, the principal components ...


3

Most of the time, intake air temperature is not the same as ambient air temperature. This is because the air absorbs heat from the hot engine bay area before the intake air temperature sensor (IATS) measures its temperature.The heat-soak effect typically worsens on hot days and when the engine is under high loads. Another factor to consider is that the ...


3

After much Googling and trying to interpret vague descriptions on internet forums, I have discovered that this is apparently the ambient temperature sensor, used to display the outside temperature on the center console. It is normally mounted in front of the radiator, in the center-ish of the front grill with a plastic clip. Unless someone has some ...


3

I would get a reversing camera instead. You can get the type that is mounted on the license plate and then you can either get a radio/headunit which supports backup cams or get a rearview mirror which has a backup display. Personally I would try to get a rearview mirror one. I think you can get the mirror for about ~$500 with the camera but I don't remember ...


3

My worry about the electromagnetic one is that while it is good at picking up metal objects that you may hit, they aren't so good at organic objects. Ultrasonic reversing sensors are good at detecting solid objects, but not so good at soft objects. As solid objects are important to identify, whether or not they are metal, the ultrasonic sensors are, in my ...


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