Motor Vehicle Maintenance and Repair Stack Exchange
Motor Vehicle Maintenance and Repair Stack Exchange

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1500 questions
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2 answers

Vehicle AC works initially, but after driving for a while (hour+), the airflow drops to the point being ineffective

I have a 2004 Ford Excursion with the 6.0 powerstroke. Most the time, the AC works fine, but after a long drive in hot weather, the front AC barely blows out of the vents. The rear works fine, in fact, my wife and I try to point those towards us,…
Alex Estrada
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What could have caused 1 brake pad to wear down to metal while my other 3 pads are ~50% used?

I just paid $400 to replace the front brake pads and rotors on a 2011 Honda Pilot. Here is what the 4 brake pads look like: 3 are in great shape--maybe 50% usage?--and 1 is down to the metal, and I had metal-on metal contact to my rotor. The…
Gabriel Staples
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Oil Pan Flap? What does it do?

The following is a picture of Peugeot 405 Oil Pan. As you can see, there is something like a flap inside the pan. Does anyone here know what is the function of that part? Why is the pan divided into 2 different chambers? Thanks in advance.
LFY MP7.3
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Will running engine after replacing A/C components ruin the new compressor before system is recharged with freon/oil?

I have replaced the air compressor (which came oiled from factory), condenser, evaporator, and expansion valve on a 2002 Honda CRV. I also replaced the alternator. I want to turn the engine on to make sure the car is running properly, sans AC, and…
EthanT
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'Check Engine' code P0171 System Too Lean - Is it safe to drive?

My 2003 Toyota Corolla's Check Engine Light came on. I read the codes using an OBD code reader and got P0171 - System Too Lean (Bank 1) and P0133 - 02 Circuit Slow Response (Bank 1, Sensor 1). The light is on solid, not blinking. From what I can…
culix
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Why don't motorbikes have chain covers?

I notice that except for small commuter bikes and older bikes (before the 80s), hardly any of the larger and/or sportier bikes have covers to protect their chains: . They seem quite practical, and conducive to chain life- by protecting the chain…
nedR
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How much battery does an ODB Bluetooth reader suck?

I'm planning on using an ODB Bluetooth reader on my car and leaving it plugged in to use apps like Dash and Torque. It's a daily driver so I'm not that worried about depleting the car's battery, but I was curious how much amperage that port would…
Duccio Shinichi Mondanelli
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How to work on engine out of car?

I'm currently doing an engine swap on on 97 Corolla Levin, need to swap over the exhaust manifold, water pump etc from one engine to the other, but not sure what the best way to handle the engine whilst doing it? I've currently got it in a tire on a…
BiGXERO
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3 answers

Car oil pressure gauge flips between 0 and 100%

My 2005 Chevy Tahoe has an Oil Pressure gauge. The needle usually sits to the far right on a value of 80. Recently it's started randomly dropping to 0 and as expected, the car's oil pressure alarm triggers and chimes. A few minutes later it will pop…
Guy
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1 answer

Is it normal to see a bit of rust under the hood?

While inspecting under the hood of a 2008 Suzuki Swift, I saw a bit of rust in some areas: (The last image is below/behind the battery.) I have looked under the hoods of other cars from 2008 and even earlier, but I have not seen anything like…
hb20007
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Why do mechanics give the wheels a spin after raising a car for inspection?

After raising a car for inspection, I noticed that a mechanic gave all 4 wheels a spin. What exactly are they looking for? I assume it has to do with whether the wheel on the opposite side will spin as well? Or is it more about listening for any…
hb20007
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Slow power window problem

On my 2000 Toyota Sienna, the driver's side power window behaves strangely. The window rolls down just fine. However, when closing it, it begins rolling up in the normal rate, but half-way up gets slower until completely stops. I then wait some time…
ysap
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I have lost my original key and keyfob to my 2006 Corvette

How can I start my Corvette without having to go to the dealership to get a new key? My money situation is tight, so I'm trying to find a way to start my car, without having to pop the clutch or order a new key.
Matthew Winchester
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3 answers

Why can't the 3rd generation Mazda rx7 safely coast downhill in neutral?

The manual for the 3rd generation Mazda rx7 says not to roll downhill without the engine engaged, because the exhaust can overheat. Unfortunately, the manual does not explain the mechanism by which the overheating occurs, so I have no idea whether…
user502
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Would OBD-II devices drain the battery when used 24/7?

There are many OBD-II devices out there that can scan and/or monitor real-time data about your car. Most of these devices are readable via USB or Bluetooth. Either USB or Bluetooth, both require some amount of power. Will these devices drain the…
Abel Melquiades Callejo
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