A device that monitors a particular function and provides data to be consumed by other systems to adjust and attribute to that system based upon the information forwarded by the sensor.

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10
votes
2answers
77 views

How does the tachometer on my dashboard actually work?

Recently, I asked a question about the speedometer, how it works and how accurate it is. But that got me thinking... how does the rest of the dash actually work? I understand that the RPM measurement ...
9
votes
1answer
325 views

Skoda Fabia - reverse parking sensors not working?

I bought a used Skoda Fabia that is fitted with a parking assistant (reverse parking sensors) which does not seem to work. According to the manual when I change into reverse it should either make a ...
8
votes
1answer
1k views

Do newer cars actually monitor the quality of oil? [duplicate]

Possible Duplicate: How does the change oil light system work and does it matter what type of oil you use for it to work properly? Starting last August, I am currently leasing a BMW 328i ...
8
votes
3answers
222 views

Car won't reach operating temperature

Here's a seemingly simple problem - I noticed that the temperature gauge of my mother's 2004 Opel Meriva 1.7CDTI won't ever climb above minimum. I checked the OBD readings to see if it was a defective ...
8
votes
1answer
752 views

how can I measure the amount of fuel injected into a diesel engine in real time in a purely mechanic pre-OBD vehicle?

This is a Mercedes-Benz 308D van, year 1992, model 602.316. Pre-OBD, no electronics of any sort, everything is purely mechanical. I would like to retrofit a system which would measure the precise ...
8
votes
1answer
420 views

Proper way to do maintenance on an air bag system (SRS)?

My air bag system light started coming on a while ago. Sometimes it will come on and stay on, other times it will go off after a while. This usually happens when it starts raining out. I did some ...
6
votes
1answer
2k views

P2238 Positive Current Circuit Low on Toyota Camry 2004

I'm getting P2238 Positive Current Circuit Low from my car, for O2 Sensor in Bank 1 Sensor 1 for my Toyota Camry 2004 (4 cylinder). What is it and how can I fix this problem? From what I've read on ...
5
votes
3answers
54 views

97 Honda Accord won't start after head gasket replacement

I recently replaced the head gasket on my Honda Accord. The cylinder head was tested at a machine shop and they also replaced the valve seals. I didn't do any work to the cylinders, except use ...
5
votes
1answer
18k views

P0136 Bank 1 Sensor 2 - Sensor location

I'm getting P0136 bank 1 sensor 2 circuit malfunction from my Toyota Camry 4 cylinder, which from past experience means I need to replace it. I've replaced the O2 sensor in the exhaust manifold ...
5
votes
1answer
90 views

Mystery Sensor on Manual Transaxel Housing

I have a 97 Mazda - 323 S V (BA) - 1.8 i 16V (114 Hp) with a manual 5 speed transmission. While trying to change the oil, I noticed the following connector, with one missing wire on what I think is ...
4
votes
6answers
1k views

Since when is CAN bus mandatory for new vehicles?

The CAN bus Wikipedia page states that: CAN bus is one of five protocols used in the on-board diagnostics (OBD)-II vehicle diagnostics standard. The OBD-II standard has been mandatory for all ...
4
votes
2answers
83 views

Why don't thermostats have a sensor?

One of the more common reasons of overheating is a stuck thermostat. One of the most common reasons for blown head gaskets is overheating. One of the most expensive vehicle repair procedures is head ...
4
votes
2answers
3k views

Where exactly is the Check Engine Light connector on a 1997 Honda Honda Civic?

The check engine light on my 1997 Honda Civic lit up. I came across a method for troubleshooting (http://honda-tech.com/showthread.php?t=1901557) but I'm having trouble finding the connector. Can ...
4
votes
3answers
58 views

judging oxygen sensor quality

I was looking at oxygen sensors for my vehicle on rock auto and found large price discrepancies. I saw sensors ranging from $25 up to $100. in general what do the more expensive sensors have that the ...
4
votes
2answers
157 views

Intermittent stall at idle

I have a 98 Saturn sw2 with a recent problem. Two times now it has stalled while idling and when it doesn't stall it floats near 500 rpms (Usually 750 - 950). The first time, it would start and just ...
4
votes
1answer
524 views

Is this repair estimate for misfiring and fuel trim on a '98 Mercedes reasonable?

Just got a '98 Benz ml320 and two days later it cut off on me, twice, within about 5 minutes. I took it for a diagnostic. I'm wondering how overpriced this estimate is and possible ideas of best ...
4
votes
1answer
3k views

Can I use an OBD2 Scan Tool on older GM vehicle?

I can get an adapter that connects my OBD2 scan tool to my 12 pin GM scan tool connection. But will the tool be able to read the codes and tell me anything useful? Or do I need to get a scan tool that ...
4
votes
1answer
435 views

Fiat 500 Airbag Sensor

My Fiat 500, 2008, 1.2 Pop, 51Kw has had its front left side somewhat crushed. The body has been fixed for the most part, but the electrician/mechanic tells us he cannot turn on the vehicle in order ...
4
votes
0answers
16 views

Rear ABS Sensors Peugeot 307

I have a Peugeot 307 and the passenger side ABS sensor had recorded a fault (after an expensive Diagnostics) so I replaced both rear sensors now there is an ABS fault on both rear wheels communication ...
4
votes
1answer
545 views

Volkswagen Golf MK4 - Oil temperature sensor coding out

I have a Volkswagen Golf MK4 TDI 85kw (AJM). After driving for a while and stopping, when I turn the ignition on I get an "Oil sensor workshop" message. After connecting VCDS I got this fault: ...
3
votes
1answer
41 views

Positioning of a resistor

Apologies in advance, my electronics knowledge is very poor. I've got myself a resistor that I believe is appropriate for the job I want to do on my vehicle. I'm replacing the factory sensor; there ...
3
votes
1answer
2k views

Maxima (2002) MAF Sensor Failures

I have a 2002 Nissan Maxima that I've owned since 2003. I'm now on my sixth Mass Air Flow (MAF) sensor. What seems to wipe them out is hard acceleration (3/4 throttle - not so extreme as to induce ...
3
votes
1answer
82 views

Can I fit parking sensors on the front of my car?

I'm getting a reversing camera for the back of my car, as I often have to park in very tight spaces, or am parked in. However, I can't fit a camera to the front, so I was wondering: Can I fit rear ...
3
votes
3answers
195 views

Automobile EDR / Black Box - What is it for?

My partner has just started driving, and her insurance company have fitted a "Black Box" to her car. My understanding of these devices is somewhat vague, as some sites suggest that they only collect ...
3
votes
1answer
122 views

97 Mazda 323: Where is the IAT sensor?

On my 97 Mazda 323 BA 1.8L BP-DOCH I can't seem to find the IAT sensor. It has a B6BF MAF with a 5 pin connector, but I don't see anything else between the air filter and the throttle body. On the ...
3
votes
3answers
1k views

Outside temperature displays wrong values in Peugeot 207

For some weeks now my mother-in-law's Peugeot 207 (2009 model I think) shows a wrong outside temperature. While the actual outdoor temperature has been somewhere around freezing (0°C) the temperature ...
3
votes
2answers
299 views

Do all engines typically support the installation of a crankshaft position sensor

I have recently purchased an 800cc dune buggy but unfortunately it doesn't come with a RPM sensor so I have been looking at my options in terms of installing one. In the process I have found that the ...
3
votes
1answer
175 views

2001 Toyota Sienna LE P0330 Error

I don't know much about cars, so I might get some terms wrong. My girlfriend drives an '01 Sienna LE and for a couple months the check engine light has been on. When I took the van to O'Reilly's and ...
3
votes
1answer
96 views

Maintenance of parking sensors

I have issues with the parking sensors on my wife's S-max (2007). The sensors would occasionally beep (constant beep) after turning on the car and selecting a gear. I tried cleaning them, but I ...
3
votes
1answer
2k views

Ambient temperature sensor reading -58 F degrees

I have a 2001 Audi S4. Last fall, I had maintenance performed on my car, and the shop accidentally, cracked my front fender. They told me about it and replaced it without any issue. However while ...
3
votes
1answer
68 views

Tire pressure sensor doesn't read

I work on several makes and models, and found that after replacing brake pads that the "low tire pressure" warning comes on as a sensor fault. Is there something I'm hitting that causes this? How can ...
3
votes
0answers
16 views

Chevy Cavalier 2002 2.2L

My antifreeze is leaking and my ECT sensor is wet. There is also smoke coming from the hose that's for the reservoir overload. What's going on?
3
votes
0answers
54 views

Wire front camera+sensors+display on SINGLE Ignition switched 12V wire

I want to install front parking sensors & camera (+display). So I have: Kit of 4 sensors + controller Camera Display Basically I know how to install & wire them, the thing I don't sure is: ...
3
votes
0answers
74 views

Replace 2009 Cobalt LNF Fuel Tank Pressure Sensor and Shroud

How difficult is it to replace the fuel tank pressure sensor and shroud on a 2009 Chevrolet Cobalt (LNF/SS)? The shop just quoted me over $200 for this. From what I can tell, the parts should be ...
3
votes
0answers
294 views

ESP warning light on

Audi A3 8PA 2005my 1.9tdi Esp warning light is on and diagnosis with VCDS shows fault :- 00493-ESP-Sensor unit (G419): No signal/Communication No other warning lights are showing. I have tried ...
2
votes
2answers
769 views

Reverse parking sensors

I've been thinking on fitting an after-market reverse parking sensors for my car, and I found 2 options: Electromagnetic Ultrasonic The Electromagnetic doesn't require to make holes in the ...
2
votes
1answer
2k views

VW Jetta 2002: O2 Sensor Heater Malfunction; how serious is this?

I have received an error code from my Jetta 2002: 16525 - P0141 - O2 Sensor Heater Circ.,Bank1-Sensor2 Malfunction Would anyone suggest, how serious is the problem? Does it have to be fixed asap or ...
2
votes
1answer
915 views

How Much Deviation from Ambient Temp is Normal for IAT sensors?

I've noticed that my air intake temp sensor gives the correct ambient temp reading in the morning when the engine is cold, but that it typically is giving me readings between 7 to 17 degrees Celsius ...
2
votes
2answers
315 views

How do Lojacks work? Are there alternatives?

So I was at a dealership recently and of course they advertised the typical Lojack. No doubt I feel these things are useful but it seems the price actually fluctuates (one dealership was selling to me ...
2
votes
1answer
379 views

Front grill electrical component near radiator

I have a 2008 Mazda 3, and unfortunately I ran over some road debris (probably a tire or something, I didn't get a good look at it). My local Mazda dealer checked it out and said there was nothing ...
2
votes
1answer
266 views

Can anyone identify this part on a '96 Honda Prelude?

I have an image of a particular part on my '96 Honda Prelude and I have no idea what it is. It's connected to the power steering and is some kind of sensor. Anyone have any insight?
2
votes
3answers
22 views

Accord 2002 SE Temperature gauge

I need a piece of advice about my temperature gauge. I want to determine what is wrong: my sensor or my gauge panel. I tried to disconnect sensor connector and connect it to new sensor, but gauge ...
2
votes
1answer
221 views

Mercedes OM636: Can I Resolder Wire to Coolant Temperature Sensor?

The wire contact connected to the Coolant Temperature Sensor of my Mercedes OM636 (Boat engine same as Mercedes 170D, 180D) was corroded and got accidentally snapped off. Can I just solder this back ...
2
votes
1answer
5k views

Engine Coolant Temperature sensor goes bad whenever the outside temperature is hot

This is on a 1998 Chevy Cavalier, automatic transaxle, 2.2L. This sensor went bad last July and I replaced it then. When it goes bad, the check engine light comes on and then the temperature gauge ...
2
votes
1answer
673 views

Can I easily replace the Throttle Position Sensor on a 1999 Maxima?

My '99 Maxima's Check Engine light came on recently. I whipped out my OBD-II reader, and pulled off two codes. P0325 (Knock Sensor) and P1705 (TPS) Reading online it appears the knock sensor ...
2
votes
1answer
35 views

06 Pontiac Torrent 3.8L V-6 temp gauge stopped working and cooling fans started running constantly when engine is running

06 Torrent V6 the temp gauge stopped working and the cooling fans run all the time when engine is running. I checked the relays and sensor plugs and they were fine, so I replaced the coolant temp ...
2
votes
1answer
55 views

Wiring both reverse sensors & camera on reverse light - Short circuit threat?

I want to install both reverse sensors & screen+camera. My challenge is with the power wiring. Both the screen and the sensors controllers need these wiring: Power from the accumulator Control ...
2
votes
0answers
62 views

Fiat 500 (2010) airbag replace - crash sensor help

Recently replaced airbags in a fiat 500 1.2L (2010 model). I've also cleared the crash codes/data from ECU. I assume I would have to replace the front crash sensor as well, but couldn't locate it. ...
2
votes
1answer
122 views

steering angle sensor in indian cars

Does Indian cars have steering angle sensor? Actually what I have to see if a car travels straight when made to move on straight line and determine if there is some problem with alignment.
1
vote
1answer
621 views

Audi A3 Brake warning after MOT

just dropping in to show my support for this forum and to ask a quick question! Had my '06 Audi A3 2.0 TDI Quattro Sport serviced and MOT'd yesterday. Knew my front pads were very worn (tried to ...