0
votes
1answer
224 views

Who decides Idle engine rpm and how? [duplicate]

I was just searching for an answer to find how the idle speed of an engine is decided and who makes that decision. Is it the engine designer alone or is it based on the inputs from all the vehicle ...
6
votes
3answers
4k views

Minimum RPM at idle speed

Looking at wikipedia, For a passenger-car engine, idle speed is customarily between 600 rpm and 1,000 rpm. For buses and trucks it is approximately 540 rpm. In case of many single-cylinder ...
2
votes
1answer
463 views

Daughter's 2005 Nissan Sentra 1.8 SE - No Low Beams - High Beams Fine

Daughter was driving home last night from work and noticed "it was very dark" on the way. Turns out low beams won't come on at all. High beams, parking, tail, turn signal and flashers all fine... just ...
4
votes
1answer
30k views

Front Wheel Squeal When Driving After New Brakes

We have a 2006 Buick Lacrosse. We just installed new front brakes. 2yr rotors and lifetime performance ceramic pads. We have used these pads in the past on the car and never experience this issue. We ...
2
votes
3answers
1k views

Pontiac g6 runs lean; throwing codes

My 2006 g6 v6 3.5 is showing codes p0171, p0174, p0705 and u0073 171 and 174 show that the engine is running lean. Is this a serious issue? 0705 shows the trans range sensor a circuit 0073 says the ...
2
votes
1answer
69 views

Audio noise when laptop connected to power inverter and the car's 3.5mm audio jack

On a recent road trip we wanted to have a laptop to play movies while on the road. We brought an Apple MacBook Air, a power inverter (to plug in the laptop's charger into the cigarette lighter), and a ...
3
votes
2answers
238 views

2004 Nissan Altima with new alternator won't accelerate, but will rev in neutral. No power in car.

Hey internet mechanics! I replaced my alternator yesterday because it was faulty (pulling a charge from my battery and killing it every night while car was off). After installing the new alternator, ...
2
votes
2answers
46 views

Determine Tire Age

I want to determine how old the tires on my car are. I understand there is an age code on each tire. But what if the age code is on the inner side? Is there some code I can use on both sides of the ...
1
vote
1answer
73 views

How can I determine if it is more cost effective to run premium fuel in my car?

Every Time I fuel up my car, I collect my odometer reading, fuel price, and gallons pumped. A while ago I drove my car to almost empty and put 93 octane fuel in my tank, ran it to almost empty and ...
3
votes
3answers
606 views

Central lock intermittently working

My central lock was working fine until yesterday. When I used the key, it clicks but doesn't unlock the doors as it should. Then I tried the second time, no clicking sound this time and nothing ...
3
votes
3answers
6k views

Slow acceleration, high fuel consumption after spark plug change

I have a 2000 Ford Ranger 4.0 L V6 4x4 model. I recently was having some problems with the truck idling too low when cold and I decided to change the spark plugs. I put in 4 out of the 6 new plugs and ...
2
votes
1answer
836 views

2015 hawk 250cc enduro motorcycle

While riding down the street, our motorcycle just died. Tried to restart it and it sounded like it wasn't firing. We changed the plug and ignition coil and still not firing. What should we do now?
2
votes
1answer
131 views

Hyundai Elantra 2001 wont start. Hear sound from the top of the engine when I turn the key on

I changed the battery and let the car sit for a long time since I was out of town. The car wont start now. I hear a clicking noise when I start the car. I opened the hood and I hear the clicking noise ...
2
votes
1answer
50 views

Does electrode size/shape matter?

I have an 84 Ranger and I recently bought some new spark plugs for the motor. I noticed that the old electrodes were huge compared to the brand new ones I just bought. Does the size of the electrode ...
5
votes
1answer
85 views

What does an EXUP servo and subsequently EXUP eliminator plug actually do?

This question relates to my 2012 Yamaha R6. I removed the kickstand safety actuator because it was bugging me, I found it useless, and my habit is often to lift the kickstand when I start moving ...
8
votes
1answer
10k views

OHV vs. OHC: which is faster in speed, horse power?

What are the main differences in OHC and OHV engine designs, and which is faster or more powerful? Also, which is more reliable?
5
votes
1answer
989 views

Failing starter motor - why does whacking it help?

Starter motors can be notorious for intermittent cranking issues towards the end of their useful life. Why is it that some starter motors can be persuaded to crank the engine by hitting or tapping ...
5
votes
1answer
132 views

When should I perform a valve head adjustment?

My 2012 Yamaha R6 has about 12000 miles on it. During that times I've had a couple rough accidents and I think the combination of those two factors it may be a good idea to check my valve clearance ...
1
vote
1answer
49 views

new starter in 74 pontiac with 350 turns over and fires but won't stay running

My starter went on my 74 Pontiac with a chev 350 (Canadian). It first was not starting sporadically and I would have to crawl under and tap on it to get it going. I got a new starter and now it will ...
5
votes
2answers
923 views

How much fuel does it take to start an engine?

I appreciate this is a question that can't be answered in facts and figures, so I'm after a general idea. I drive a 1986 Supra, which has a modest 2.8-litre engine. I often shut the engine off while ...
4
votes
0answers
163 views

My BMW X5 won't stay running

Hello I have a 2003 BMW X5. I just got the engine replace a couple days ago. I went to pick it up but because the shop was done installing the motor but now I have to deal with the other problems I ...
1
vote
1answer
380 views

96 honda accord wont start

So I was having trouble with my 96 accord it was sputtering and Hesitant replaced plugs and wires checked my EGR it was good then suddenly out of nowhere it stalled out on me while driving and now it ...
8
votes
2answers
4k views

How can you tell the difference between oil or transmission fluid in the antifreeze?

I am in the process of repairing my 1997 Toyota 4-runner with a v-6 engine. I have only had the vehicle for a couple of days. I was doing a routine maintenance check on all the fluids. What I found ...
3
votes
3answers
1k views

How do I hook up the remote entry feature of a remote start unit in a 2004 rendezvous?

I've recently acquired a 2004 Buick Rendezvous, which has an aftermarket remote start unit installed (Excalibur RS-450-EDP+). Unfortunately, the previous owner did not hook up the remote entry feature....
3
votes
1answer
50 views

Wheel bearing grease quantity

I own a Ford Ranger and want to know whether to pack extra grease in the hub, especially in the space between the inside bearing and the seal and within the spindle cap outside the outer bearing. I ...
2
votes
1answer
428 views

Engine, sudden reduced power with soft shaking

I have a 2007 Holden with a 2.0 Turbo engine. On one day I decided to go through a light that had just turned orange- so I pressed down, not completely as I new how much power I needed to go through ...
1
vote
1answer
82 views

oil spots on Air Filter

I have Matiz 1.0 with 122K Km on the meter. Today i noticed oil on air filter after inspection i found this might be coming from PCV hose(green highlighted one) and then inspected the PCV valve. ...
0
votes
1answer
237 views

Rack and pinion replacement alternatives

I noticed a (pretty slow for now) power steering fluid leak on my Mazda 6. During regular maintenance at my dealership I asked them to take a look and they told me that that entire rack and pinion ...
1
vote
1answer
66 views

Repair broken light connector on Volvo 240

So I tried to replace the broken corner light assembly on my '92 Volvo 240 last night. On the old unit, the gray connector (pictured in link) was stuck, and eventually pulled free with part of the ...
3
votes
1answer
160 views

What is the 2000 civic SIR coolant temperature sensor thread size?

I'm installing an Auto Meter water temp gauge and didn't receive an adapter with it. Anyone know the thread size of the stock coolant temp sender on a B16A2 engine? (Single wire)... I was going to do ...
1
vote
2answers
215 views

Which Engine is more powerful?

Engine A Specifications: Displacement: 1198 CC Max Power (bhp @ rpm): 87 @ 6000 Max Torque (Nm @ rpm): 110 @ 4800 Engine B Specifications: Displacement: 1197 CC Max Power (bhp @ rpm): 82 @ 6000 ...
2
votes
0answers
26 views

My temperature gauge slowly goes to top then car dies

I replaced battery and now after starting the car and driving it for less than 70 feet temperature guage slowly rises to top and car loses electrical power. Then guage goes down and power restored. ...
5
votes
4answers
178 views

Removing oil stains from the driveway?

A few weeks ago, our car seems to have spilled some oil on our driveway. I regret that I didn't ask sooner but I hope it's not too late: --> What can I do to remove these stains? As for the car, I'm ...
2
votes
0answers
87 views

Nissan vanette, low beams not working, high beams are! New relay wires still no change? It's a 1998

Work up to one head light no working on low beam. Both are working when on high beam. Checked all fuses, and the seem to be ok. Relay terminals are brand new. But after a week there is only one head ...
2
votes
2answers
412 views

Engine jerking and revving, multiple failed ignition coils

This problem started a month ago. My Aveo started revving and jerking when it was sitting at a light on my way home (2 blocks from my house) and the engine light came on. I drove it home. The next ...
29
votes
3answers
11k views

Jump starting a dead battery: Connect black wire to negative pole of battery or grounded metal?

Most of the advice I've seen for jump starting cars instructs to connect the black wire to a bare piece of metal on the car with the dead battery. However, I've always just hooked up both poles to the ...
4
votes
1answer
2k views

Why is this motorcycle burning oil, and how can I get it to stop?

I have a newbie question for you. I'm considering buying a 2004 Yamaha TTR600RE- a single-cylinder, air-cooled dirt-focused dual-sport bike. It's perfectly set up for adventure touring, which is what ...
3
votes
1answer
3k views

Low beams won't work

I have a 2007 Ford Focus. For some reason my low beams won't work. I've checked the fuses, replaced the relay, replaced the bulbs, and replaced the headlight switch in the dash. Still nothing. All ...
6
votes
1answer
85 views

Wrangler JK transfer box options

Apologies for a very Jeep-centered question, that may not interest everybody. Here goes: I own a 2009 Wrangler JKU (pre face-lift), equipped with the 2.8 TD engine, Chrysler NSG370 six-speed manual ...
8
votes
1answer
454 views

How to get items out of the HVAC system from a 2003-2007 Honda Accord

Before I ruin my dashboard/car, I wanted to know if my approach is correct. I don't know much about cars but logically, it seems like a simple enough task to remove vents, reach in and grab items, ...
1
vote
1answer
141 views

How can I estimate CO2 emissions for a vehicle travel distance [closed]

How can I properly estimate CO2 emissions for a given travel distance (of a private vehicle)? I found the following formula, but I'm not sure that it's correct: kgCO2 = Average fuel consumption per ...
2
votes
1answer
1k views

Should I replace the AC's expansion valve?

The problem: Mazda 3 2008 125 K miles this is the first major ( > $300) thing to need fixing on this car The problem originally was that when you turn the AC on you get some cool air for about 20 ...
3
votes
4answers
188 views

Car declared a total loss, what do I do?

I recently sent my 2007 Honda Accord LX 94k miles into the shop after getting rear ended by someone who was texting and driving. I got a call from the shop saying that it was declared a total loss. ...
1
vote
1answer
218 views

Codes like P0171, P0101

My 2001 Nissan Sentra shows a P0171 and P0101 code. I tried to clean the sensor and the part after that (I don't know the name) and it's still showing the engine light. The sensor seems like new to ...
3
votes
1answer
33 views

Headlights come on by themselves

Why would the headlights on a 2006 Saab 9-3 come on by themselves while the car is off and parked?
1
vote
2answers
235 views

RPM problem (car is jerking)

I have a Toyota Sx Carina, Model 1995, engine: 5E-EFI. I just bought this used car. But when I am driving I am facing some problems. When I drive in D mode the RPM (race) is not constant. It is just ...
3
votes
2answers
252 views

Should I let air out of my tires?

I bought a car brand new 9 months ago. My tire pressure sensor came on. I checked the tire pressure, and it was at 35 PSI. My maximum tire pressure is 51 PSI with a warning not to fill above 40 PSI. I ...
2
votes
3answers
12k views

Clutch pedal hard to push

We have a Diesel Ford Fiesta (Mk4) - manual transmission, and its clutch pedal is very hard to push after a short drive. I.e. in the morning it's ok, but later it becomes very hard to push. I'm no ...
1
vote
2answers
167 views

1999 Grand Prix Issues

I bought this car used 3 yrs ago. Previous owners spun bearings in motor and replaced with 03. I had numerous issues with the cooling system and overheating since I purchased. I replaced water pump, ...
5
votes
1answer
2k views

Automatic: revs dropping then stalling when stopped at lights

Kia Sedona 2012 automatic. Drove 180 miles on a full tank of fuel without any problems. Started the car the next day and it didn't start cleanly but did eventually. Was waiting on the drive with the ...

15 30 50 per page