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1500 questions
10
votes
1 answer
How to Tell if an IAC needs to be Cleaned?
Is it possible to diagnose an IAC as needing cleaning without actually taking it apart?
For example, I recently was having some idle issues with my 99 Nissan Almera 1.6L which were solved by adjusting the idle air screw. The person who suggested…
Robert S. Barnes
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10
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1 answer
'98 Passat Locked when FOB batteries changed, how do you unlock it?
My friend owns a '98 VW Passat 2.0 Turbo. He changed the batteries in the key FOB and now the vehicle is locked by the security system. Using the key will not unlock any of the doors or trunk.
What must be done to unlock the vehicle and reset, (if…
Jonathan Musso
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10
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3 answers
Remanufactured 5.3 engine not firing on one bank
2007 Chevy Avalanche 5.3 vin 3.
I bought a remanufactured engine. After installing it, the truck runs, but only bank 1 (1,3,5,7) is firing.
It has power to the coil packs on bank 2 (2,4,6,8), but no spark. I put in a new cam sensor, crank sensor,…
Shaine
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10
votes
2 answers
headlights come on by themselves when car sitting in sun
if sitting in the sun on a hot day, my family's 1995 Mazda protege 323's headlights will come on, even though they are not switched on. This occurs with the car off, and the keys out. The simple way to turn them off is to disconnect the battery, as…
Michael Wilson
- 101
- 4
10
votes
1 answer
Formula 1 valve trains
There was a statement in a post regarding Formula 1 valve trains being pneumatic or magnetic. Are there valve trains driven magnetically or pneumatically that are on the market? When did they start using these kinds of valve trains? Does this…
Ppoggio
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10
votes
2 answers
Are there downsides to making an accessory socket always live, if accessories are removed when not in use?
In some cars, the power line from the battery to the accessory outlet (aka cigarette lighter socket) is always live. In others, it's off until ignition.
It seems pretty much random which cars are wired which way, and some cars are wired differently…
user56reinstatemonica8
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10
votes
1 answer
How to use an engine stand
This is one thing which I have asked many times on a car forum and never received a satisfactory response for.
I know that the engine block is somehow bolted onto an engine stand like the one pictured below, but I have some specific…
Zaid
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10
votes
4 answers
Is control module voltage and battery voltage the same?
Is the Control Module Voltage (from OBD Mode 01 PID 42) and battery voltage the same? If not, what is the relation between them?
Why is the max value of Control Module Voltage (from OBD Mode 01 PID 42) as 65.535 V, when the battery voltage can at…
Soumya Sen
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10
votes
2 answers
Why Have More Than One IAC Type Device On an Engine?
I've had two Mazda's, a 97 323 and 98 626. On both these car's engines there was only a single IAC mounted on top of the throttle body, and no other device for adding air flow on the intake side.
However, on my 99 Nissan Almera with the GA16DE…
Robert S. Barnes
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10
votes
1 answer
How does one use a chain press to remove a motorcycle chain?
I recently found out about this tool from this answer.
I'm interested in understanding the steps involved in using this tool to remove/install motorcycle chains.
Also, would it be possible to use this tool to remove/install timing chains on car…
Zaid
- 39,276
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10
votes
1 answer
Scatter Camshafts - What are they and why do I want one?
It seems in the world on mini's as in Mini Cooper, there is a camshaft called a scatter cam. It changes the timing for cylinders 2 and 3. I've heard of changing the timing to have 1 and 4 firing at the same time as well as 2 and 3 on 4-cylinder…
DucatiKiller
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10
votes
3 answers
When stopping, should I put the transmission in neutral?
When I have to stop the car but I know that I will be moving again soon, on the red light for example, should I shift to neutral?
When I was learning how to drive, my instructor said that there is no problem in stopping for a long time with the car…
Paulostation
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10
votes
1 answer
Sharp whining noise coming from rear of the car
In my Toyota Vitz 2007, I hear a sharp whining noise coming from the rear of the vehicle.
This noise does not always happen. When the vehicle is started, the noise is not there. But after driving for 15 - 20 minutes, the noise starts. The noise is…
Softcode
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10
votes
1 answer
VW Bora V6 2005 - Sump Replacement Question
My sump cover has a huge hole and I'm going to replace it.
Can I take the cover off from underneath the car or does the motor have to be lifted to recover the sump cover?
Daniel
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10
votes
1 answer
After brake bleed, pedal goes to floor
2005 Toyota sequoia. Brake pedal was fine most of the time but occasionally it would sink to the floor while stopping and it would be hard to stop. I bled my brakes and now the pedal goes to the floor all the time with little stopping power. My auto…
Lucas
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