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14 votes
Accepted

What is this thing hanging from a wire from the front headliner at the top of the windshield?

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 ...
davidbak's user avatar
  • 531
9 votes

MAP sensor covered with gasoline

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 ...
cdunn's user avatar
  • 9,296
8 votes
Accepted

How much distance would 1mm off front brakes translate into?

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 ...
Zaid's user avatar
  • 39.1k
8 votes

Tricks for disconnecting sensor connectors

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 ...
Zaid's user avatar
  • 39.1k
6 votes

what sensors and formula are used to control VGT/VNT turbos?

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 ...
rpmerf's user avatar
  • 8,403
6 votes
Accepted

Replacing a dashboard for another one with more indicators

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 ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
5 votes

Malfunctioning Ambient Temperature Gauge - 2004 Subaru Forester

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 ...
PeteCon's user avatar
  • 8,712
5 votes

Shouldn't my post-cat O2 sensors (lambda probes) be reporting varying numbers?

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 ...
Zaid's user avatar
  • 39.1k
5 votes
Accepted

What are the safety sensors & cameras on those new windshield packs? (like Volvo city safety)

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 ...
vini_i's user avatar
  • 16k
5 votes

Jeep Patriot RPM Gauge bounces / not right

I don't know for sure, but would bet the gauge itself is bad. One way you could check this is by putting an OBDII reader onto the port and check live data from the ECU to see if it matches what's ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
4 votes
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Corolla 1999 - My parking brake light randomly turns on and off

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 ...
Nick C's user avatar
  • 28.8k
4 votes
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Are torque sensors used to reduce cam belt failure damage?

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 ...
Steve Matthews's user avatar
4 votes
Accepted

Slightly low MPG - need help with my checklist

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 ...
juhist's user avatar
  • 14.5k
4 votes

Why is it still overheating

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 ...
tlhIngan's user avatar
  • 12.2k
4 votes
Accepted

Does the dash temperature sender unit also provide input to the ECU?

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 ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
3 votes

Shouldn't my post-cat O2 sensors (lambda probes) be reporting varying numbers?

It may depend on how you are gathering that data. Perhaps a "Live Data" OBD Parameter ID or "PID"? You may need a more specific scan tool or smarter software. Some (especially higher end) vehicles ...
SteveRacer's user avatar
  • 12.4k
3 votes

How to remove sensor for rear tailgate

I don't know which way the switch would work with it being open or closed to denote the the hatch being closed. What I can tell you is to remove the switch so you have access to the wiring. Cut the ...
Pᴀᴜʟsᴛᴇʀ2's user avatar
3 votes

What are the safety sensors & cameras on those new windshield packs? (like Volvo city safety)

City Safety is based on a combined camera and radar unit integrated at the top of the windscreen, in front of the interior rear-view mirror. The latest technology upgrade is a smarter and faster high-...
SteveRacer's user avatar
  • 12.4k
3 votes

2002 Yamaha YZF R1- Fault code 15

The fault code is related to your TPS Your TPS is a throttle position sensor. The fault code is not necessarily indicative of a broken wire although it could be. It sounds as though you have ...
DucatiKiller's user avatar
  • 32.9k
3 votes

what sensors and formula are used to control VGT/VNT turbos?

Disclaimer: I've never done this practically. This answer is based on my somewhat limited exposure to turbomachinery theory in automotive applications. It's all about the flow Unlike fixed-geometry ...
Zaid's user avatar
  • 39.1k
3 votes

Tricks for disconnecting sensor connectors

these are quite the pain in the bum when theyre not cooperating. It takes some time but I like to use slip joint pliers to grab onto the sides of the connectors and wiggle it out of there while I ...
Miguel Moreno's user avatar
3 votes

Why is it still overheating

The clue is that the heater core was replaced; it sounds like a classic case of the system being air-locked. You can get the scenario where a bubble of air is trapped below the level of the coolant ...
Steve Matthews's user avatar
3 votes

Installing after-market seats

Usually when someone is replacing seats it's because they want racing seats, so the safety and comfort features do not apply so you would put new seats in and leave the airbags and heaters off ...
GdD's user avatar
  • 16.9k
3 votes

Saturn ion 2007 Temperature gauge

You should scan the engine for codes. On a Saturn you can have a P0128 (low coolant temp) code for a while with no check engine light. When you get a P0128 code, the ECM will turn on the engine fans, ...
MTA's user avatar
  • 6,140
3 votes
Accepted

RPMs at 0 while driving. Can't re-start car without 45 min cooldown but then runs normal for 30 min

It is most likely a faulty crankshaft position sensor. This sensor tracks your engine r.p.m. That's why your tach goes to 0. On many cars when they fail while running the computer remembers where the ...
Jupiter's user avatar
  • 3,222
2 votes

Sporadic speedometer, and performance lags when speedometer not engaged

The Vehicle Speed Sensor sends signal to the Instrument Cluster. You can check pin 2 (blue/white) on the B connector for signal from the VSS. If there is signal you need a new cluster. If not you ...
Ben's user avatar
  • 10.7k
2 votes

Rear ABS Sensors Peugeot 307

Did you ever solve this problem? I have just had a customer buy some eBay Peugeot ABS sensors and they were completely faulty. Replaced with some OE quality (Pagid) sensors and the car was fine. I ...
Newbie Noob's user avatar
  • 2,781
2 votes

MAP sensor covered with gasoline

A small portion of exhaust gas is sent back to the intake to improve emissions via the EGR hose. If your vehicle is running rich, some fuel will be left unburnt in the exhaust gases. This can explain ...
Zaid's user avatar
  • 39.1k
2 votes

P2238 Positive Current Circuit Low on Toyota Camry 2004

A 2004 Camry SE uses three sensors: an Upstream Oxygen Sensor, an Upstream Air Fuel Ratio Sensor and a Downstream Oxygen Sensor. Your "Bank 1 Sensor 1" error indicates a problem with Air ...
Raul Tennis's user avatar
2 votes

Honda Civic O2 Sensor

This will not likely work. If the sensor is not the correct part number for the specific vehicle it is unlikely that it will match the exacting electrical specifications needed for the PCM to control ...
Fred Wilson's user avatar
  • 11.6k

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